./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label25.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_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB --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 72f92f25e4e59fa95b8789bfa42e8fcf3cc5f940b4a99df7cabdcfbbf5ccf30f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:41,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:41,145 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:07:41,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:41,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:41,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:41,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:41,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:41,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:41,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:41,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:41,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:41,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:41,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:41,185 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:41,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:41,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:41,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:41,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:41,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:41,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:41,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:41,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:41,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:41,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:41,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:41,187 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:41,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:41,187 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:41,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:41,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:41,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:41,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:41,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:41,189 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:41,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:41,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:41,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:41,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:41,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:41,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:41,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:41,190 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_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 72f92f25e4e59fa95b8789bfa42e8fcf3cc5f940b4a99df7cabdcfbbf5ccf30f [2024-11-28 02:07:41,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:41,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:41,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:41,617 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:41,617 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:41,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem13_label25.c [2024-11-28 02:07:45,081 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/data/5d988592f/2de3e412e9fa451babd8dca6071d646c/FLAG028b60575 [2024-11-28 02:07:45,959 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:45,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/sv-benchmarks/c/eca-rers2012/Problem13_label25.c [2024-11-28 02:07:46,012 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/data/5d988592f/2de3e412e9fa451babd8dca6071d646c/FLAG028b60575 [2024-11-28 02:07:46,044 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/data/5d988592f/2de3e412e9fa451babd8dca6071d646c [2024-11-28 02:07:46,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:46,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:46,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:46,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:46,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:46,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:46" (1/1) ... [2024-11-28 02:07:46,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666b036b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:46, skipping insertion in model container [2024-11-28 02:07:46,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:46" (1/1) ... [2024-11-28 02:07:46,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:46,547 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_1defe7e0-4e64-4b37-ae74-56a930e67b24/sv-benchmarks/c/eca-rers2012/Problem13_label25.c[3529,3542] [2024-11-28 02:07:47,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:47,793 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:47,826 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_1defe7e0-4e64-4b37-ae74-56a930e67b24/sv-benchmarks/c/eca-rers2012/Problem13_label25.c[3529,3542] [2024-11-28 02:07:48,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:48,650 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:48,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48 WrapperNode [2024-11-28 02:07:48,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:48,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:48,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:48,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:48,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:48,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:49,706 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-28 02:07:49,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:49,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:49,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:49,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:49,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:49,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:49,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,247 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:07:50,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,592 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:50,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:50,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:50,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:50,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:50,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (1/1) ... [2024-11-28 02:07:51,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:51,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:51,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:51,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:51,183 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:51,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:08:02,960 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-28 02:08:02,960 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:08:03,023 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:08:03,024 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:08:03,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:08:03 BoogieIcfgContainer [2024-11-28 02:08:03,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:08:03,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:08:03,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:08:03,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:08:03,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:46" (1/3) ... [2024-11-28 02:08:03,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b6699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:08:03, skipping insertion in model container [2024-11-28 02:08:03,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:48" (2/3) ... [2024-11-28 02:08:03,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b6699c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:08:03, skipping insertion in model container [2024-11-28 02:08:03,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:08:03" (3/3) ... [2024-11-28 02:08:03,047 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2024-11-28 02:08:03,068 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:08:03,071 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label25.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:08:03,203 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:08:03,221 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;@6bf167a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:08:03,221 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:08:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:08:03,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:03,238 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] [2024-11-28 02:08:03,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:03,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2024-11-28 02:08:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79909015] [2024-11-28 02:08:03,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:03,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:03,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79909015] [2024-11-28 02:08:03,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79909015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:03,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:03,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58461737] [2024-11-28 02:08:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:03,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:03,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:03,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:03,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:03,753 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:10,306 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2024-11-28 02:08:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:10,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-11-28 02:08:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:10,334 INFO L225 Difference]: With dead ends: 3082 [2024-11-28 02:08:10,335 INFO L226 Difference]: Without dead ends: 1899 [2024-11-28 02:08:10,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:10,346 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 1016 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:10,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 02:08:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-28 02:08:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2024-11-28 02:08:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2024-11-28 02:08:10,498 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 23 [2024-11-28 02:08:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:10,501 INFO L471 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2024-11-28 02:08:10,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2024-11-28 02:08:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 02:08:10,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:10,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:10,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:08:10,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:10,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash 679112298, now seen corresponding path program 1 times [2024-11-28 02:08:10,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:10,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722073228] [2024-11-28 02:08:10,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:10,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722073228] [2024-11-28 02:08:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722073228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:10,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:10,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432372365] [2024-11-28 02:08:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:10,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:10,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:10,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:10,988 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:17,122 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2024-11-28 02:08:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:17,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-28 02:08:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:17,139 INFO L225 Difference]: With dead ends: 5384 [2024-11-28 02:08:17,140 INFO L226 Difference]: Without dead ends: 3492 [2024-11-28 02:08:17,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:17,144 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:17,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 02:08:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2024-11-28 02:08:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2024-11-28 02:08:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2024-11-28 02:08:17,273 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 88 [2024-11-28 02:08:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:17,274 INFO L471 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2024-11-28 02:08:17,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2024-11-28 02:08:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:08:17,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:17,280 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:17,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:08:17,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:17,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:17,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1248984753, now seen corresponding path program 1 times [2024-11-28 02:08:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:17,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312652297] [2024-11-28 02:08:17,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:17,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312652297] [2024-11-28 02:08:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312652297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:17,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:17,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85020749] [2024-11-28 02:08:17,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:17,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:17,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:17,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:17,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:17,471 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:22,268 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2024-11-28 02:08:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:22,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-28 02:08:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:22,297 INFO L225 Difference]: With dead ends: 10169 [2024-11-28 02:08:22,297 INFO L226 Difference]: Without dead ends: 6680 [2024-11-28 02:08:22,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:22,307 INFO L435 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:22,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:08:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2024-11-28 02:08:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2024-11-28 02:08:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2024-11-28 02:08:22,469 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 90 [2024-11-28 02:08:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:22,470 INFO L471 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2024-11-28 02:08:22,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2024-11-28 02:08:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:08:22,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:22,478 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:22,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:08:22,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:22,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:22,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1171343069, now seen corresponding path program 1 times [2024-11-28 02:08:22,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:22,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309757964] [2024-11-28 02:08:22,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309757964] [2024-11-28 02:08:23,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309757964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:23,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:23,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117899729] [2024-11-28 02:08:23,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:23,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:23,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:23,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:23,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:23,090 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:27,114 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2024-11-28 02:08:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2024-11-28 02:08:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:27,145 INFO L225 Difference]: With dead ends: 14123 [2024-11-28 02:08:27,145 INFO L226 Difference]: Without dead ends: 7456 [2024-11-28 02:08:27,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:27,159 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:27,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:08:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2024-11-28 02:08:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2024-11-28 02:08:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2024-11-28 02:08:27,353 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 134 [2024-11-28 02:08:27,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:27,354 INFO L471 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2024-11-28 02:08:27,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2024-11-28 02:08:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:08:27,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:27,360 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:27,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:08:27,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:27,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1577063047, now seen corresponding path program 1 times [2024-11-28 02:08:27,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:27,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807689921] [2024-11-28 02:08:27,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:08:27,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807689921] [2024-11-28 02:08:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807689921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926246080] [2024-11-28 02:08:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:27,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:27,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:27,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:27,707 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:33,052 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2024-11-28 02:08:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-11-28 02:08:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:33,098 INFO L225 Difference]: With dead ends: 19656 [2024-11-28 02:08:33,098 INFO L226 Difference]: Without dead ends: 12989 [2024-11-28 02:08:33,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:33,108 INFO L435 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:33,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 02:08:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2024-11-28 02:08:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2024-11-28 02:08:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2024-11-28 02:08:33,352 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 148 [2024-11-28 02:08:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:33,352 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2024-11-28 02:08:33,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2024-11-28 02:08:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-28 02:08:33,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:33,357 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:08:33,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:08:33,358 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:33,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1306910518, now seen corresponding path program 1 times [2024-11-28 02:08:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375352186] [2024-11-28 02:08:33,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-28 02:08:34,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:34,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375352186] [2024-11-28 02:08:34,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375352186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:34,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:34,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:08:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535674568] [2024-11-28 02:08:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:34,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:34,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:34,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:34,065 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:39,102 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2024-11-28 02:08:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:39,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 235 [2024-11-28 02:08:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:39,141 INFO L225 Difference]: With dead ends: 22792 [2024-11-28 02:08:39,141 INFO L226 Difference]: Without dead ends: 12980 [2024-11-28 02:08:39,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:39,154 INFO L435 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:39,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 02:08:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2024-11-28 02:08:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2024-11-28 02:08:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2024-11-28 02:08:39,500 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 235 [2024-11-28 02:08:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:39,501 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2024-11-28 02:08:39,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2024-11-28 02:08:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 02:08:39,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:39,507 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:39,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:08:39,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:39,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash -658013584, now seen corresponding path program 1 times [2024-11-28 02:08:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:39,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965463467] [2024-11-28 02:08:39,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:39,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965463467] [2024-11-28 02:08:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965463467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:39,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:39,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168254861] [2024-11-28 02:08:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:39,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:39,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:39,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:39,787 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:45,557 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2024-11-28 02:08:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:45,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-11-28 02:08:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:45,609 INFO L225 Difference]: With dead ends: 36166 [2024-11-28 02:08:45,610 INFO L226 Difference]: Without dead ends: 23196 [2024-11-28 02:08:45,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:45,620 INFO L435 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:45,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 02:08:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2024-11-28 02:08:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2024-11-28 02:08:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2024-11-28 02:08:45,947 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 237 [2024-11-28 02:08:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:45,948 INFO L471 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2024-11-28 02:08:45,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2024-11-28 02:08:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-28 02:08:45,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:45,958 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:45,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:08:45,959 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:45,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash -116068480, now seen corresponding path program 1 times [2024-11-28 02:08:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:45,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98302747] [2024-11-28 02:08:45,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:08:46,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:46,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98302747] [2024-11-28 02:08:46,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98302747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:46,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:08:46,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41127572] [2024-11-28 02:08:46,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:46,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:46,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:46,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:46,270 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:51,702 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2024-11-28 02:08:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:51,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 259 [2024-11-28 02:08:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:51,772 INFO L225 Difference]: With dead ends: 55046 [2024-11-28 02:08:51,772 INFO L226 Difference]: Without dead ends: 33431 [2024-11-28 02:08:51,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:08:51,795 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 884 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:51,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 926 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 02:08:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2024-11-28 02:08:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2024-11-28 02:08:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.1762578905436047) internal successors, (38386), 32634 states have internal predecessors, (38386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38386 transitions. [2024-11-28 02:08:52,253 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38386 transitions. Word has length 259 [2024-11-28 02:08:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:52,254 INFO L471 AbstractCegarLoop]: Abstraction has 32635 states and 38386 transitions. [2024-11-28 02:08:52,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38386 transitions. [2024-11-28 02:08:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 02:08:52,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:52,258 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:52,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:08:52,259 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:52,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash 539258178, now seen corresponding path program 1 times [2024-11-28 02:08:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:52,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183564341] [2024-11-28 02:08:52,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 41 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:54,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:54,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183564341] [2024-11-28 02:08:54,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183564341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:54,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846705329] [2024-11-28 02:08:54,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:54,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:54,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:54,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:54,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:08:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:54,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:08:54,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:08:54,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:08:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846705329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:54,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:08:54,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 02:08:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901600030] [2024-11-28 02:08:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:54,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:08:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:54,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:08:54,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:08:54,380 INFO L87 Difference]: Start difference. First operand 32635 states and 38386 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:59,373 INFO L93 Difference]: Finished difference Result 64479 states and 75977 transitions. [2024-11-28 02:08:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:08:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 264 [2024-11-28 02:08:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:59,419 INFO L225 Difference]: With dead ends: 64479 [2024-11-28 02:08:59,419 INFO L226 Difference]: Without dead ends: 32633 [2024-11-28 02:08:59,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:08:59,439 INFO L435 NwaCegarLoop]: 1359 mSDtfsCounter, 1184 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:59,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1441 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 02:08:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32633 states. [2024-11-28 02:08:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32633 to 32632. [2024-11-28 02:08:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32632 states, 32631 states have (on average 1.1368330728448408) internal successors, (37096), 32631 states have internal predecessors, (37096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32632 states to 32632 states and 37096 transitions. [2024-11-28 02:08:59,918 INFO L78 Accepts]: Start accepts. Automaton has 32632 states and 37096 transitions. Word has length 264 [2024-11-28 02:08:59,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:59,919 INFO L471 AbstractCegarLoop]: Abstraction has 32632 states and 37096 transitions. [2024-11-28 02:08:59,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:08:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 32632 states and 37096 transitions. [2024-11-28 02:08:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-28 02:08:59,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:59,927 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:59,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:09:00,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:09:00,133 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:00,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1190291685, now seen corresponding path program 1 times [2024-11-28 02:09:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622265716] [2024-11-28 02:09:00,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:09:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622265716] [2024-11-28 02:09:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622265716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:00,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:00,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:09:00,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850001396] [2024-11-28 02:09:00,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:00,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:00,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:00,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:00,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:09:00,526 INFO L87 Difference]: Start difference. First operand 32632 states and 37096 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:06,709 INFO L93 Difference]: Finished difference Result 76288 states and 87829 transitions. [2024-11-28 02:09:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:06,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 314 [2024-11-28 02:09:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:06,752 INFO L225 Difference]: With dead ends: 76288 [2024-11-28 02:09:06,752 INFO L226 Difference]: Without dead ends: 44445 [2024-11-28 02:09:06,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:09:06,777 INFO L435 NwaCegarLoop]: 1802 mSDtfsCounter, 840 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:06,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1945 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 02:09:06,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44445 states. [2024-11-28 02:09:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44445 to 43654. [2024-11-28 02:09:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43654 states, 43653 states have (on average 1.1179300391725655) internal successors, (48801), 43653 states have internal predecessors, (48801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43654 states to 43654 states and 48801 transitions. [2024-11-28 02:09:07,265 INFO L78 Accepts]: Start accepts. Automaton has 43654 states and 48801 transitions. Word has length 314 [2024-11-28 02:09:07,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:07,266 INFO L471 AbstractCegarLoop]: Abstraction has 43654 states and 48801 transitions. [2024-11-28 02:09:07,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 43654 states and 48801 transitions. [2024-11-28 02:09:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-28 02:09:07,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:07,271 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:07,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:09:07,271 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:07,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1124335399, now seen corresponding path program 1 times [2024-11-28 02:09:07,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:07,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410922306] [2024-11-28 02:09:07,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 170 proven. 113 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:09:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410922306] [2024-11-28 02:09:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410922306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22194355] [2024-11-28 02:09:08,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:08,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:09:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:09,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:09,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:09:09,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:09,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22194355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:09,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 02:09:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282277768] [2024-11-28 02:09:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:09,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:09,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:09,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:09:09,352 INFO L87 Difference]: Start difference. First operand 43654 states and 48801 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:14,255 INFO L93 Difference]: Finished difference Result 86510 states and 96800 transitions. [2024-11-28 02:09:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:14,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 329 [2024-11-28 02:09:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:14,300 INFO L225 Difference]: With dead ends: 86510 [2024-11-28 02:09:14,300 INFO L226 Difference]: Without dead ends: 43645 [2024-11-28 02:09:14,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:09:14,325 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 1074 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:14,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 813 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 02:09:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2024-11-28 02:09:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2024-11-28 02:09:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086634740966478) internal successors, (47424), 43643 states have internal predecessors, (47424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47424 transitions. [2024-11-28 02:09:14,860 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47424 transitions. Word has length 329 [2024-11-28 02:09:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:14,861 INFO L471 AbstractCegarLoop]: Abstraction has 43644 states and 47424 transitions. [2024-11-28 02:09:14,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47424 transitions. [2024-11-28 02:09:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-28 02:09:14,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:14,868 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:14,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:09:15,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:15,069 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:15,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2025963814, now seen corresponding path program 1 times [2024-11-28 02:09:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515995852] [2024-11-28 02:09:15,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 02:09:15,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515995852] [2024-11-28 02:09:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515995852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:15,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:15,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:09:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681948019] [2024-11-28 02:09:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:15,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:15,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:15,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:15,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:15,434 INFO L87 Difference]: Start difference. First operand 43644 states and 47424 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 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) [2024-11-28 02:09:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:25,001 INFO L93 Difference]: Finished difference Result 150458 states and 163817 transitions. [2024-11-28 02:09:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 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 371 [2024-11-28 02:09:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:25,103 INFO L225 Difference]: With dead ends: 150458 [2024-11-28 02:09:25,103 INFO L226 Difference]: Without dead ends: 107603 [2024-11-28 02:09:25,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:25,123 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 1712 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 7099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:25,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 753 Invalid, 7099 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1095 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 02:09:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107603 states. [2024-11-28 02:09:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107603 to 104326. [2024-11-28 02:09:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794728013419603) internal successors, (112616), 104325 states have internal predecessors, (112616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112616 transitions. [2024-11-28 02:09:26,557 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112616 transitions. Word has length 371 [2024-11-28 02:09:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:26,557 INFO L471 AbstractCegarLoop]: Abstraction has 104326 states and 112616 transitions. [2024-11-28 02:09:26,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 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) [2024-11-28 02:09:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112616 transitions. [2024-11-28 02:09:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-28 02:09:26,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:26,576 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:09:26,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:09:26,576 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:26,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -620271952, now seen corresponding path program 1 times [2024-11-28 02:09:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:26,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089932465] [2024-11-28 02:09:26,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 342 proven. 110 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 02:09:28,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:28,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089932465] [2024-11-28 02:09:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089932465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282045573] [2024-11-28 02:09:28,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:28,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:28,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:28,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:09:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:28,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:28,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-11-28 02:09:28,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282045573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:28,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:28,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-28 02:09:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894513230] [2024-11-28 02:09:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:28,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:28,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:28,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:28,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:28,562 INFO L87 Difference]: Start difference. First operand 104326 states and 112616 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:33,362 INFO L93 Difference]: Finished difference Result 209441 states and 226030 transitions. [2024-11-28 02:09:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 414 [2024-11-28 02:09:33,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:33,475 INFO L225 Difference]: With dead ends: 209441 [2024-11-28 02:09:33,475 INFO L226 Difference]: Without dead ends: 105904 [2024-11-28 02:09:33,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:33,509 INFO L435 NwaCegarLoop]: 1386 mSDtfsCounter, 1016 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:33,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1472 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:09:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105904 states. [2024-11-28 02:09:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105904 to 104315. [2024-11-28 02:09:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104315 states, 104314 states have (on average 1.0673255747071342) internal successors, (111337), 104314 states have internal predecessors, (111337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104315 states to 104315 states and 111337 transitions. [2024-11-28 02:09:34,804 INFO L78 Accepts]: Start accepts. Automaton has 104315 states and 111337 transitions. Word has length 414 [2024-11-28 02:09:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:34,805 INFO L471 AbstractCegarLoop]: Abstraction has 104315 states and 111337 transitions. [2024-11-28 02:09:34,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 104315 states and 111337 transitions. [2024-11-28 02:09:34,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-28 02:09:34,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:34,813 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:09:34,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:09:35,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:35,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:35,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1877419229, now seen corresponding path program 1 times [2024-11-28 02:09:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832057185] [2024-11-28 02:09:35,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 375 proven. 113 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 02:09:37,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832057185] [2024-11-28 02:09:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832057185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87048434] [2024-11-28 02:09:37,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:37,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:37,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:37,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:37,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:09:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:37,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:37,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-28 02:09:37,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:37,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87048434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:37,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:37,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 02:09:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973291018] [2024-11-28 02:09:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:37,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:37,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:37,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:37,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:09:37,560 INFO L87 Difference]: Start difference. First operand 104315 states and 111337 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:42,534 INFO L93 Difference]: Finished difference Result 232249 states and 248873 transitions. [2024-11-28 02:09:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 432 [2024-11-28 02:09:42,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:42,742 INFO L225 Difference]: With dead ends: 232249 [2024-11-28 02:09:42,742 INFO L226 Difference]: Without dead ends: 128723 [2024-11-28 02:09:42,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:09:42,804 INFO L435 NwaCegarLoop]: 1630 mSDtfsCounter, 859 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:42,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1751 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 02:09:42,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128723 states. [2024-11-28 02:09:44,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128723 to 126349. [2024-11-28 02:09:44,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126349 states, 126348 states have (on average 1.068984075727356) internal successors, (135064), 126348 states have internal predecessors, (135064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126349 states to 126349 states and 135064 transitions. [2024-11-28 02:09:44,626 INFO L78 Accepts]: Start accepts. Automaton has 126349 states and 135064 transitions. Word has length 432 [2024-11-28 02:09:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:44,627 INFO L471 AbstractCegarLoop]: Abstraction has 126349 states and 135064 transitions. [2024-11-28 02:09:44,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 126349 states and 135064 transitions. [2024-11-28 02:09:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 02:09:44,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:44,637 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:44,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:44,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:09:44,837 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:44,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash -214713478, now seen corresponding path program 1 times [2024-11-28 02:09:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:44,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953177760] [2024-11-28 02:09:44,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:44,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 446 proven. 110 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-28 02:09:46,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:46,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953177760] [2024-11-28 02:09:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953177760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:46,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337645596] [2024-11-28 02:09:46,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:46,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:46,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:46,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:46,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:09:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:46,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:46,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2024-11-28 02:09:46,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337645596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-28 02:09:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286470119] [2024-11-28 02:09:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:46,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:46,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:46,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:46,551 INFO L87 Difference]: Start difference. First operand 126349 states and 135064 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:53,111 INFO L93 Difference]: Finished difference Result 294495 states and 314875 transitions. [2024-11-28 02:09:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:53,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 469 [2024-11-28 02:09:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:53,257 INFO L225 Difference]: With dead ends: 294495 [2024-11-28 02:09:53,257 INFO L226 Difference]: Without dead ends: 168935 [2024-11-28 02:09:53,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:53,285 INFO L435 NwaCegarLoop]: 1739 mSDtfsCounter, 881 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 3498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:53,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1863 Invalid, 3498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 02:09:53,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168935 states. [2024-11-28 02:09:54,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168935 to 155485. [2024-11-28 02:09:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155485 states, 155484 states have (on average 1.0652092819839984) internal successors, (165623), 155484 states have internal predecessors, (165623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155485 states to 155485 states and 165623 transitions. [2024-11-28 02:09:55,364 INFO L78 Accepts]: Start accepts. Automaton has 155485 states and 165623 transitions. Word has length 469 [2024-11-28 02:09:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:55,365 INFO L471 AbstractCegarLoop]: Abstraction has 155485 states and 165623 transitions. [2024-11-28 02:09:55,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 155485 states and 165623 transitions. [2024-11-28 02:09:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2024-11-28 02:09:55,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:55,375 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 02:09:55,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:09:55,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:09:55,576 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:55,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:55,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1590547437, now seen corresponding path program 1 times [2024-11-28 02:09:55,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:55,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095386363] [2024-11-28 02:09:55,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-28 02:09:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095386363] [2024-11-28 02:09:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095386363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:57,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054787251] [2024-11-28 02:09:57,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:57,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:57,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:57,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:57,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:09:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:57,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:57,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-28 02:09:57,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:57,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054787251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:57,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:57,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 02:09:57,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427457735] [2024-11-28 02:09:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:57,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:57,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:57,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:09:57,784 INFO L87 Difference]: Start difference. First operand 155485 states and 165623 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:03,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:03,038 INFO L93 Difference]: Finished difference Result 308606 states and 328750 transitions. [2024-11-28 02:10:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:10:03,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 509 [2024-11-28 02:10:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:03,229 INFO L225 Difference]: With dead ends: 308606 [2024-11-28 02:10:03,229 INFO L226 Difference]: Without dead ends: 159421 [2024-11-28 02:10:03,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:10:03,302 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 939 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:03,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 496 Invalid, 3043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [690 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:10:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159421 states. [2024-11-28 02:10:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159421 to 157046. [2024-11-28 02:10:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157046 states, 157045 states have (on average 1.0566207138081443) internal successors, (165937), 157045 states have internal predecessors, (165937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157046 states to 157046 states and 165937 transitions. [2024-11-28 02:10:05,624 INFO L78 Accepts]: Start accepts. Automaton has 157046 states and 165937 transitions. Word has length 509 [2024-11-28 02:10:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:05,624 INFO L471 AbstractCegarLoop]: Abstraction has 157046 states and 165937 transitions. [2024-11-28 02:10:05,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 157046 states and 165937 transitions. [2024-11-28 02:10:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-28 02:10:05,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:05,640 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-11-28 02:10:05,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:10:05,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:10:05,840 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:05,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash -212197548, now seen corresponding path program 1 times [2024-11-28 02:10:05,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:05,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85558619] [2024-11-28 02:10:05,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:05,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 451 proven. 110 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-28 02:10:07,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:07,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85558619] [2024-11-28 02:10:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85558619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843665070] [2024-11-28 02:10:07,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:07,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:07,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:07,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:07,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:10:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:07,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:10:07,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-28 02:10:08,623 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843665070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 02:10:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684459192] [2024-11-28 02:10:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:08,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:10:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:08,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:10:08,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:10:08,626 INFO L87 Difference]: Start difference. First operand 157046 states and 165937 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:13,239 INFO L93 Difference]: Finished difference Result 307804 states and 325506 transitions. [2024-11-28 02:10:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:10:13,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 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 555 [2024-11-28 02:10:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:13,430 INFO L225 Difference]: With dead ends: 307804 [2024-11-28 02:10:13,430 INFO L226 Difference]: Without dead ends: 161782 [2024-11-28 02:10:13,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:10:13,498 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:13,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1132 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 02:10:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161782 states. [2024-11-28 02:10:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161782 to 159411. [2024-11-28 02:10:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159411 states, 159410 states have (on average 1.0517847061037575) internal successors, (167665), 159410 states have internal predecessors, (167665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159411 states to 159411 states and 167665 transitions. [2024-11-28 02:10:16,095 INFO L78 Accepts]: Start accepts. Automaton has 159411 states and 167665 transitions. Word has length 555 [2024-11-28 02:10:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:16,095 INFO L471 AbstractCegarLoop]: Abstraction has 159411 states and 167665 transitions. [2024-11-28 02:10:16,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 159411 states and 167665 transitions. [2024-11-28 02:10:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-11-28 02:10:16,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:16,109 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:10:16,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:10:16,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1defe7e0-4e64-4b37-ae74-56a930e67b24/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:10:16,309 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:16,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1929903071, now seen corresponding path program 1 times [2024-11-28 02:10:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:16,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81936242] [2024-11-28 02:10:16,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-11-28 02:10:16,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:16,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81936242] [2024-11-28 02:10:16,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81936242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:16,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:10:16,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:10:16,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91573688] [2024-11-28 02:10:16,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:16,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:10:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:16,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:10:16,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:10:16,680 INFO L87 Difference]: Start difference. First operand 159411 states and 167665 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:21,283 INFO L93 Difference]: Finished difference Result 306228 states and 322511 transitions. [2024-11-28 02:10:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:10:21,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 571 [2024-11-28 02:10:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:21,459 INFO L225 Difference]: With dead ends: 306228 [2024-11-28 02:10:21,459 INFO L226 Difference]: Without dead ends: 160204 [2024-11-28 02:10:21,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:10:21,525 INFO L435 NwaCegarLoop]: 1747 mSDtfsCounter, 722 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:21,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1881 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 02:10:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160204 states. [2024-11-28 02:10:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160204 to 160199. [2024-11-28 02:10:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160199 states, 160198 states have (on average 1.051748461279167) internal successors, (168488), 160198 states have internal predecessors, (168488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160199 states to 160199 states and 168488 transitions. [2024-11-28 02:10:23,848 INFO L78 Accepts]: Start accepts. Automaton has 160199 states and 168488 transitions. Word has length 571 [2024-11-28 02:10:23,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:23,848 INFO L471 AbstractCegarLoop]: Abstraction has 160199 states and 168488 transitions. [2024-11-28 02:10:23,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:23,849 INFO L276 IsEmpty]: Start isEmpty. Operand 160199 states and 168488 transitions. [2024-11-28 02:10:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-28 02:10:23,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:23,871 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:23,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:10:23,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:23,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1352792193, now seen corresponding path program 1 times [2024-11-28 02:10:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10768870] [2024-11-28 02:10:23,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 02:10:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:24,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10768870] [2024-11-28 02:10:24,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10768870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:24,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:10:24,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:10:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544569739] [2024-11-28 02:10:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:24,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:10:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:24,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:10:24,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:10:24,200 INFO L87 Difference]: Start difference. First operand 160199 states and 168488 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)