./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/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_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 14:09:08,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 14:09:08,317 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-06 14:09:08,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 14:09:08,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 14:09:08,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 14:09:08,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 14:09:08,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 14:09:08,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 14:09:08,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 14:09:08,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 14:09:08,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 14:09:08,369 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 14:09:08,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 14:09:08,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 14:09:08,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 14:09:08,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 14:09:08,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 14:09:08,373 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 14:09:08,373 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 14:09:08,373 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 14:09:08,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 14:09:08,375 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 14:09:08,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 14:09:08,375 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 14:09:08,376 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 14:09:08,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 14:09:08,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 14:09:08,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 14:09:08,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:09:08,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 14:09:08,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 14:09:08,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 14:09:08,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 14:09:08,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-06 14:09:08,380 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-06 14:09:08,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-06 14:09:08,381 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-06 14:09:08,381 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-06 14:09:08,381 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_1f6764c0-b442-4d86-850e-b0cdb52ebafc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2023-11-06 14:09:08,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 14:09:08,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 14:09:08,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 14:09:08,737 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 14:09:08,738 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 14:09:08,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/../../sv-benchmarks/c/pthread/stack_longest-2.i [2023-11-06 14:09:11,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 14:09:12,327 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 14:09:12,327 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/sv-benchmarks/c/pthread/stack_longest-2.i [2023-11-06 14:09:12,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/data/976f425ba/24fcacb303e94cf49e7c43f1ef7e3cc7/FLAG3f367db06 [2023-11-06 14:09:12,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/data/976f425ba/24fcacb303e94cf49e7c43f1ef7e3cc7 [2023-11-06 14:09:12,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 14:09:12,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 14:09:12,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 14:09:12,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 14:09:12,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 14:09:12,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:09:12" (1/1) ... [2023-11-06 14:09:12,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abef331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:12, skipping insertion in model container [2023-11-06 14:09:12,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:09:12" (1/1) ... [2023-11-06 14:09:12,490 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 14:09:13,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:09:13,117 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 14:09:13,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:09:13,283 INFO L206 MainTranslator]: Completed translation [2023-11-06 14:09:13,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13 WrapperNode [2023-11-06 14:09:13,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 14:09:13,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 14:09:13,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 14:09:13,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 14:09:13,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,385 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 154 [2023-11-06 14:09:13,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 14:09:13,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 14:09:13,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 14:09:13,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 14:09:13,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 14:09:13,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 14:09:13,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 14:09:13,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 14:09:13,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (1/1) ... [2023-11-06 14:09:13,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:09:13,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:13,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:13,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 14:09:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 14:09:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 14:09:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 14:09:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 14:09:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 14:09:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 14:09:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 14:09:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 14:09:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 14:09:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 14:09:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 14:09:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 14:09:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 14:09:13,568 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 14:09:13,770 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 14:09:13,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 14:09:14,123 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 14:09:14,147 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 14:09:14,148 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 14:09:14,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:09:14 BoogieIcfgContainer [2023-11-06 14:09:14,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 14:09:14,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 14:09:14,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 14:09:14,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 14:09:14,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:09:12" (1/3) ... [2023-11-06 14:09:14,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f336bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:09:14, skipping insertion in model container [2023-11-06 14:09:14,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:13" (2/3) ... [2023-11-06 14:09:14,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f336bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:09:14, skipping insertion in model container [2023-11-06 14:09:14,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:09:14" (3/3) ... [2023-11-06 14:09:14,168 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-11-06 14:09:14,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 14:09:14,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-06 14:09:14,190 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 14:09:14,410 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 14:09:14,480 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:14,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:14,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:14,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-06 14:09:14,547 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:14,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2023-11-06 14:09:14,570 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=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6ca42918, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:14,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 14:09:14,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:15,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:15,003 INFO L85 PathProgramCache]: Analyzing trace with hash -870936346, now seen corresponding path program 1 times [2023-11-06 14:09:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:15,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470174849] [2023-11-06 14:09:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:15,355 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 14:09:15,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470174849] [2023-11-06 14:09:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470174849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:15,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:15,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:09:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871418897] [2023-11-06 14:09:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 14:09:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 14:09:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 14:09:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,400 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:15,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:15,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 14:09:15,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:15,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1298748708, now seen corresponding path program 1 times [2023-11-06 14:09:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781139745] [2023-11-06 14:09:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:15,795 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 14:09:15,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:15,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781139745] [2023-11-06 14:09:15,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781139745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:15,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:15,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 14:09:15,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993470859] [2023-11-06 14:09:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:15,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,801 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:15,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 14:09:15,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:15,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 14:09:15,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:15,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2083215958, now seen corresponding path program 1 times [2023-11-06 14:09:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163964234] [2023-11-06 14:09:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:15,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:16,027 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 14:09:16,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163964234] [2023-11-06 14:09:16,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163964234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:16,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:16,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 14:09:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78010671] [2023-11-06 14:09:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:16,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 14:09:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 14:09:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 14:09:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:16,032 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:16,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 14:09:16,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:16,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:16,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:16,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 14:09:16,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:16,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash -422103318, now seen corresponding path program 1 times [2023-11-06 14:09:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9260824] [2023-11-06 14:09:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:16,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9260824] [2023-11-06 14:09:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9260824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:16,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487495606] [2023-11-06 14:09:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:16,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:16,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:16,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:16,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 14:09:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:16,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 14:09:16,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:16,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487495606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:17,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 14:09:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570965564] [2023-11-06 14:09:17,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:17,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 14:09:17,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:17,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 14:09:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 14:09:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:17,068 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:17,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.8) internal successors, (238), 10 states have internal predecessors, (238), 0 states have call successors, (0), 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 14:09:17,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:17,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:17,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:17,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:17,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:17,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:17,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:17,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:17,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2034851078, now seen corresponding path program 2 times [2023-11-06 14:09:17,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221578771] [2023-11-06 14:09:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221578771] [2023-11-06 14:09:17,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221578771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097931384] [2023-11-06 14:09:17,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 14:09:17,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:17,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:17,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:17,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 14:09:18,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 14:09:18,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:09:18,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 14:09:18,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:18,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 15 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:18,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097931384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:18,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:18,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-06 14:09:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247664571] [2023-11-06 14:09:18,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:18,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 14:09:18,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 14:09:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 14:09:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:18,811 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:18,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.11111111111111) internal successors, (398), 18 states have internal predecessors, (398), 0 states have call successors, (0), 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 14:09:18,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:18,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:18,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:18,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:18,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:19,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:19,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:19,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:19,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2093358786, now seen corresponding path program 3 times [2023-11-06 14:09:19,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590540624] [2023-11-06 14:09:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:19,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 35 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590540624] [2023-11-06 14:09:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590540624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493857626] [2023-11-06 14:09:20,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 14:09:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:20,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:20,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 14:09:21,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-06 14:09:21,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:09:21,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 14:09:21,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 35 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:21,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 35 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:22,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493857626] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:22,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:22,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-11-06 14:09:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698256683] [2023-11-06 14:09:22,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 14:09:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 14:09:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 14:09:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:22,405 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 21.11764705882353) internal successors, (718), 34 states have internal predecessors, (718), 0 states have call successors, (0), 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 14:09:22,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:22,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:22,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:22,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:22,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:22,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 14:09:23,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:23,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 14:09:23,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:23,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:23,450 INFO L85 PathProgramCache]: Analyzing trace with hash -443823698, now seen corresponding path program 4 times [2023-11-06 14:09:23,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:23,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389742060] [2023-11-06 14:09:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4545 backedges. 75 proven. 4470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:26,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:26,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389742060] [2023-11-06 14:09:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389742060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358042495] [2023-11-06 14:09:26,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 14:09:26,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:26,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:26,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 14:09:28,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 14:09:28,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 14:09:28,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 14:09:28,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4545 backedges. 75 proven. 4470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:29,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4545 backedges. 75 proven. 4470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358042495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:31,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2023-11-06 14:09:31,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656249142] [2023-11-06 14:09:31,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:31,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-06 14:09:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:31,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-06 14:09:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-11-06 14:09:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:31,593 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:31,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 20.575757575757574) internal successors, (1358), 66 states have internal predecessors, (1358), 0 states have call successors, (0), 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 14:09:31,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:31,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:31,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:31,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:31,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:31,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2023-11-06 14:09:31,597 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 14:09:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 14:09:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 14:09:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 14:09:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-06 14:09:34,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 14:09:34,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6764c0-b442-4d86-850e-b0cdb52ebafc/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 14:09:34,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-06 14:09:34,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1242359154, now seen corresponding path program 5 times [2023-11-06 14:09:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152053116] [2023-11-06 14:09:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat