./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 14:09:20,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 14:09:20,215 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-06 14:09:20,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 14:09:20,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 14:09:20,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 14:09:20,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 14:09:20,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 14:09:20,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 14:09:20,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 14:09:20,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 14:09:20,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 14:09:20,258 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 14:09:20,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 14:09:20,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 14:09:20,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 14:09:20,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 14:09:20,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 14:09:20,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 14:09:20,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 14:09:20,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 14:09:20,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 14:09:20,270 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 14:09:20,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 14:09:20,270 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 14:09:20,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 14:09:20,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 14:09:20,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 14:09:20,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:09:20,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 14:09:20,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 14:09:20,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 14:09:20,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 14:09:20,276 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-06 14:09:20,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 14:09:20,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-06 14:09:20,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-06 14:09:20,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 14:09:20,277 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-06 14:09:20,277 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-06 14:09:20,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2023-11-06 14:09:20,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 14:09:20,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 14:09:20,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 14:09:20,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 14:09:20,665 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 14:09:20,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/../../sv-benchmarks/c/pthread/queue_ok.i [2023-11-06 14:09:23,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 14:09:24,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 14:09:24,204 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/sv-benchmarks/c/pthread/queue_ok.i [2023-11-06 14:09:24,232 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/data/af0fd873a/86ee1556ee0e49cf9c6d6fe33f66b75d/FLAG09f9cba43 [2023-11-06 14:09:24,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/data/af0fd873a/86ee1556ee0e49cf9c6d6fe33f66b75d [2023-11-06 14:09:24,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 14:09:24,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 14:09:24,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 14:09:24,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 14:09:24,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 14:09:24,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:09:24" (1/1) ... [2023-11-06 14:09:24,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7223b9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:24, skipping insertion in model container [2023-11-06 14:09:24,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:09:24" (1/1) ... [2023-11-06 14:09:24,341 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 14:09:24,935 WARN L240 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_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2023-11-06 14:09:24,946 WARN L240 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_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2023-11-06 14:09:24,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:09:24,967 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 14:09:25,016 WARN L240 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_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2023-11-06 14:09:25,019 WARN L240 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_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2023-11-06 14:09:25,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:09:25,096 INFO L206 MainTranslator]: Completed translation [2023-11-06 14:09:25,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25 WrapperNode [2023-11-06 14:09:25,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 14:09:25,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 14:09:25,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 14:09:25,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 14:09:25,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,203 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 202 [2023-11-06 14:09:25,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 14:09:25,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 14:09:25,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 14:09:25,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 14:09:25,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,269 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 14:09:25,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 14:09:25,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 14:09:25,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 14:09:25,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (1/1) ... [2023-11-06 14:09:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:09:25,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:25,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:25,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 14:09:25,364 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 14:09:25,365 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 14:09:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 14:09:25,365 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 14:09:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 14:09:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 14:09:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 14:09:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 14:09:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 14:09:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 14:09:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 14:09:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 14:09:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 14:09:25,369 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 14:09:25,534 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 14:09:25,536 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 14:09:25,993 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 14:09:26,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 14:09:26,012 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 14:09:26,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:09:26 BoogieIcfgContainer [2023-11-06 14:09:26,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 14:09:26,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 14:09:26,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 14:09:26,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 14:09:26,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:09:24" (1/3) ... [2023-11-06 14:09:26,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7edfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:09:26, skipping insertion in model container [2023-11-06 14:09:26,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:25" (2/3) ... [2023-11-06 14:09:26,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7edfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:09:26, skipping insertion in model container [2023-11-06 14:09:26,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:09:26" (3/3) ... [2023-11-06 14:09:26,031 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2023-11-06 14:09:26,041 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 14:09:26,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 14:09:26,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 14:09:26,052 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 14:09:26,181 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 14:09:26,240 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:26,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:26,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-06 14:09:26,310 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:26,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-06 14:09:26,345 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@10432658, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:26,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 14:09:26,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 14:09:26,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash 170891077, now seen corresponding path program 1 times [2023-11-06 14:09:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:26,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270679288] [2023-11-06 14:09:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270679288] [2023-11-06 14:09:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270679288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:26,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:26,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:09:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825087150] [2023-11-06 14:09:26,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 14:09:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 14:09:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 14:09:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:26,812 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:26,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:26,814 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:27,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 14:09:27,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 14:09:27,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 14:09:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 14:09:27,316 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 14:09:27,319 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE,SAFE (1/2) [2023-11-06 14:09:27,337 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:27,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:27,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:27,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2023-11-06 14:09:27,399 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:27,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork0 ======== [2023-11-06 14:09:27,401 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@10432658, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:27,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 14:09:27,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:27,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1135882948, now seen corresponding path program 1 times [2023-11-06 14:09:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272130770] [2023-11-06 14:09:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:27,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:27,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:27,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272130770] [2023-11-06 14:09:27,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272130770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:27,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:27,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:09:27,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359320217] [2023-11-06 14:09:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:28,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 14:09:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:28,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 14:09:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 14:09:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,006 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:28,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:28,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 14:09:28,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:28,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -30188591, now seen corresponding path program 1 times [2023-11-06 14:09:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135943135] [2023-11-06 14:09:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:28,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:28,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135943135] [2023-11-06 14:09:28,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135943135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:28,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:28,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 14:09:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314169129] [2023-11-06 14:09:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,618 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:28,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:28,619 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,620 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 14:09:28,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:28,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1832156292, now seen corresponding path program 1 times [2023-11-06 14:09:28,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:28,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074988684] [2023-11-06 14:09:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:28,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:28,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074988684] [2023-11-06 14:09:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074988684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:28,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 14:09:28,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99733850] [2023-11-06 14:09:28,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,951 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:28,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:28,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:28,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:28,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 14:09:28,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:28,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash 719079227, now seen corresponding path program 1 times [2023-11-06 14:09:28,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:28,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747541211] [2023-11-06 14:09:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:28,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:29,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:29,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747541211] [2023-11-06 14:09:29,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747541211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:29,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863877884] [2023-11-06 14:09:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:29,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:29,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:29,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:29,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 14:09:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:29,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 14:09:29,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:29,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863877884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:29,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:29,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 14:09:29,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65473767] [2023-11-06 14:09:29,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 14:09:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:29,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 14:09:29,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 14:09:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:29,805 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.5) internal successors, (255), 10 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:29,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:29,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:29,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:29,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:29,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 14:09:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:30,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:30,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1783236777, now seen corresponding path program 2 times [2023-11-06 14:09:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863535661] [2023-11-06 14:09:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:30,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:30,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:30,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863535661] [2023-11-06 14:09:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863535661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484160068] [2023-11-06 14:09:30,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 14:09:30,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:30,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:30,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 14:09:30,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 14:09:30,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:09:30,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 14:09:30,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 14:09:30,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 14:09:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484160068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:30,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 14:09:30,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 14:09:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838199581] [2023-11-06 14:09:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:30,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 14:09:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 14:09:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 14:09:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:30,927 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:30,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:30,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:30,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:30,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:30,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:30,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:09:31,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:31,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 14:09:31,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:31,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1191456440, now seen corresponding path program 1 times [2023-11-06 14:09:31,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:31,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813985139] [2023-11-06 14:09:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813985139] [2023-11-06 14:09:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813985139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598646615] [2023-11-06 14:09:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:31,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:31,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:31,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:31,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 14:09:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:31,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 14:09:31,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:32,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598646615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:32,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-06 14:09:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547077737] [2023-11-06 14:09:32,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:32,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 14:09:32,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 14:09:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 14:09:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:32,347 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.22222222222222) internal successors, (382), 18 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:32,348 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:32,348 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:32,348 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:32,348 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:32,348 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:09:32,349 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:09:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:32,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:32,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 14:09:32,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:32,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1393545124, now seen corresponding path program 2 times [2023-11-06 14:09:32,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:32,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369683196] [2023-11-06 14:09:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:32,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:33,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:33,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369683196] [2023-11-06 14:09:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369683196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800701022] [2023-11-06 14:09:33,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 14:09:33,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:33,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:33,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:33,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 14:09:34,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 14:09:34,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:09:34,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 14:09:34,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:34,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:35,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800701022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:35,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:35,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-11-06 14:09:35,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734816885] [2023-11-06 14:09:35,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:35,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 14:09:35,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 14:09:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 14:09:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:35,351 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:35,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 18.764705882352942) internal successors, (638), 34 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:35,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:35,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:35,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:35,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:35,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:09:35,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:35,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:09:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 14:09:36,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:36,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:36,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 14:09:36,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1284338596, now seen corresponding path program 3 times [2023-11-06 14:09:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016810963] [2023-11-06 14:09:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:36,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3375 backedges. 0 proven. 3375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:39,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:39,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016810963] [2023-11-06 14:09:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016810963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:39,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343923198] [2023-11-06 14:09:39,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 14:09:39,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:39,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:39,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:39,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b1e92de-f96e-4fc3-a80d-b8dc83dbe70a/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 14:09:39,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 14:09:39,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:09:39,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 14:09:39,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:42,852 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 14:09:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 14:09:42,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 14:09:43,279 INFO L322 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2023-11-06 14:09:43,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-11-06 14:09:43,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 14:09:43,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 14:09:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3375 backedges. 482 proven. 319 refuted. 0 times theorem prover too weak. 2574 trivial. 0 not checked. [2023-11-06 14:09:43,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:43,830 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_855) |c_~#queue~0.base|) (+ 84 |c_~#queue~0.offset|)) 20)) is different from false [2023-11-06 14:09:43,865 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 14:09:43,865 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-06 14:09:43,878 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 14:09:43,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2023-11-06 14:09:43,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 14:09:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3375 backedges. 391 proven. 319 refuted. 0 times theorem prover too weak. 2574 trivial. 91 not checked. [2023-11-06 14:09:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343923198] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:44,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 14, 12] total 55 [2023-11-06 14:09:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044365728] [2023-11-06 14:09:44,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:44,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-06 14:09:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-06 14:09:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=2489, Unknown=1, NotChecked=104, Total=2970 [2023-11-06 14:09:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:44,961 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:44,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 16.527272727272727) internal successors, (909), 55 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:44,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:44,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:44,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:44,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:44,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-06 14:09:44,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:44,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2023-11-06 14:09:44,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.