./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB --witnessprinter.witness.filename witness --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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-22 08:56:24,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 08:56:24,268 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-22 08:56:24,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 08:56:24,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 08:56:24,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 08:56:24,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 08:56:24,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 08:56:24,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 08:56:24,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 08:56:24,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 08:56:24,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 08:56:24,333 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 08:56:24,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 08:56:24,335 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 08:56:24,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 08:56:24,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 08:56:24,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 08:56:24,337 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 08:56:24,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 08:56:24,339 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 08:56:24,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 08:56:24,340 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 08:56:24,340 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 08:56:24,341 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 08:56:24,342 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 08:56:24,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 08:56:24,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 08:56:24,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 08:56:24,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 08:56:24,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:56:24,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 08:56:24,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 08:56:24,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 08:56:24,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 08:56:24,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 08:56:24,348 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-22 08:56:24,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-22 08:56:24,349 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-22 08:56:24,349 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-22 08:56:24,349 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_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2023-11-22 08:56:24,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 08:56:24,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 08:56:24,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 08:56:24,733 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 08:56:24,734 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 08:56:24,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-22 08:56:28,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 08:56:28,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 08:56:28,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-22 08:56:28,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/data/9b06d9447/e3649563c14c470e975222bf5276d2cb/FLAG084176b0f [2023-11-22 08:56:28,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/data/9b06d9447/e3649563c14c470e975222bf5276d2cb [2023-11-22 08:56:28,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 08:56:28,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 08:56:28,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 08:56:28,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 08:56:28,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 08:56:28,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:56:28" (1/1) ... [2023-11-22 08:56:28,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5549d75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:28, skipping insertion in model container [2023-11-22 08:56:28,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:56:28" (1/1) ... [2023-11-22 08:56:28,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 08:56:29,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:56:29,069 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 08:56:29,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:56:29,189 INFO L206 MainTranslator]: Completed translation [2023-11-22 08:56:29,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29 WrapperNode [2023-11-22 08:56:29,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 08:56:29,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 08:56:29,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 08:56:29,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 08:56:29,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,300 INFO L138 Inliner]: procedures = 169, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 146 [2023-11-22 08:56:29,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 08:56:29,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 08:56:29,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 08:56:29,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 08:56:29,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 08:56:29,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 08:56:29,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 08:56:29,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 08:56:29,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (1/1) ... [2023-11-22 08:56:29,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:56:29,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:29,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 08:56:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 08:56:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-22 08:56:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-22 08:56:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-22 08:56:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-22 08:56:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 08:56:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-22 08:56:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 08:56:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 08:56:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 08:56:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-22 08:56:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 08:56:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-22 08:56:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 08:56:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 08:56:29,514 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 08:56:29,702 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 08:56:29,705 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 08:56:30,248 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 08:56:30,611 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 08:56:30,611 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 08:56:30,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:56:30 BoogieIcfgContainer [2023-11-22 08:56:30,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 08:56:30,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 08:56:30,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 08:56:30,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 08:56:30,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:56:28" (1/3) ... [2023-11-22 08:56:30,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4638a5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:56:30, skipping insertion in model container [2023-11-22 08:56:30,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:29" (2/3) ... [2023-11-22 08:56:30,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4638a5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:56:30, skipping insertion in model container [2023-11-22 08:56:30,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:56:30" (3/3) ... [2023-11-22 08:56:30,626 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-11-22 08:56:30,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 08:56:30,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-22 08:56:30,650 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 08:56:30,732 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-22 08:56:30,787 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:56:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:30,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:30,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-22 08:56:30,853 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:56:30,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork0 ======== [2023-11-22 08:56:30,876 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;@49119963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:30,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 08:56:31,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash -873896646, now seen corresponding path program 1 times [2023-11-22 08:56:31,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:31,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812100524] [2023-11-22 08:56:31,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:31,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812100524] [2023-11-22 08:56:32,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812100524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:32,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:32,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981984948] [2023-11-22 08:56:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 08:56:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:32,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 08:56:32,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 08:56:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:32,410 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:32,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:32,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 08:56:32,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:32,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash -873896645, now seen corresponding path program 1 times [2023-11-22 08:56:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:32,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119367839] [2023-11-22 08:56:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119367839] [2023-11-22 08:56:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119367839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:33,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 08:56:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124833115] [2023-11-22 08:56:33,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:33,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:33,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:33,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:33,352 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:33,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:33,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:33,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 08:56:33,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1205103271, now seen corresponding path program 1 times [2023-11-22 08:56:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:33,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363878775] [2023-11-22 08:56:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:33,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566737867] [2023-11-22 08:56:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:33,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:33,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:33,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:33,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 08:56:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:34,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 08:56:34,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:34,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:34,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:34,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-22 08:56:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:34,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-22 08:56:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:34,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363878775] [2023-11-22 08:56:35,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566737867] [2023-11-22 08:56:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566737867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:35,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 08:56:35,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-22 08:56:35,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824194306] [2023-11-22 08:56:35,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:35,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:56:35,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:56:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:56:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:35,264 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:35,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:35,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:35,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:35,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:36,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-11-22 08:56:36,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-22 08:56:36,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2023-11-22 08:56:36,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:36,314 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-22 08:56:36,317 INFO L307 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE,SAFE,SAFE (1/3) [2023-11-22 08:56:36,325 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:36,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:56:36,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:36,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:36,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-11-22 08:56:36,343 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:56:36,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-22 08:56:36,345 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=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;@49119963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:36,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-22 08:56:37,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:37,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -184346873, now seen corresponding path program 1 times [2023-11-22 08:56:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647154624] [2023-11-22 08:56:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:37,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:37,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101992129] [2023-11-22 08:56:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:37,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:37,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:37,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:37,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 08:56:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:37,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 08:56:37,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:37,274 INFO L378 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 11 treesize of output 7 [2023-11-22 08:56:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 08:56:37,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 08:56:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647154624] [2023-11-22 08:56:37,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:37,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101992129] [2023-11-22 08:56:37,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101992129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:37,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:37,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 08:56:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127863810] [2023-11-22 08:56:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:37,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:37,308 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:37,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:37,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:37,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:37,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:37,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:37,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411516, now seen corresponding path program 1 times [2023-11-22 08:56:37,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:37,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698058293] [2023-11-22 08:56:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:37,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698058293] [2023-11-22 08:56:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698058293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:56:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40556680] [2023-11-22 08:56:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:37,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:37,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:37,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:37,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 08:56:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:37,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 08:56:37,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:37,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:37,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40556680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:37,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:56:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-22 08:56:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660679123] [2023-11-22 08:56:37,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:37,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 08:56:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 08:56:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 08:56:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:37,980 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:37,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:37,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:37,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:38,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:38,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:38,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:38,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1484576260, now seen corresponding path program 1 times [2023-11-22 08:56:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:38,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568357758] [2023-11-22 08:56:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:38,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 08:56:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:38,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568357758] [2023-11-22 08:56:38,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568357758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:38,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:38,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 08:56:38,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105356504] [2023-11-22 08:56:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:38,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:38,450 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:38,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:38,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:38,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:38,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 08:56:38,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:38,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1644849706, now seen corresponding path program 2 times [2023-11-22 08:56:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117137950] [2023-11-22 08:56:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 08:56:38,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117137950] [2023-11-22 08:56:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117137950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:56:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695353305] [2023-11-22 08:56:38,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 08:56:38,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:38,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:38,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:38,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 08:56:38,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 08:56:38,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:56:38,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 08:56:38,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 08:56:40,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 08:56:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695353305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:40,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 08:56:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-22 08:56:40,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702835408] [2023-11-22 08:56:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 08:56:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 08:56:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:56:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:40,254 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:40,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:40,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:40,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:40,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:40,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:40,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-22 08:56:40,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-22 08:56:40,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:40,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2114167222, now seen corresponding path program 1 times [2023-11-22 08:56:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:40,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51208437] [2023-11-22 08:56:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 08:56:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51208437] [2023-11-22 08:56:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51208437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:41,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:41,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158954338] [2023-11-22 08:56:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:41,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:41,116 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:41,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:41,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:41,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:41,117 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 08:56:41,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:41,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2114167221, now seen corresponding path program 1 times [2023-11-22 08:56:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:41,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011389767] [2023-11-22 08:56:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 08:56:41,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011389767] [2023-11-22 08:56:41,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011389767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:41,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:41,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:41,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095970896] [2023-11-22 08:56:41,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:41,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 08:56:41,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 08:56:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 08:56:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:41,355 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:41,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:41,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:41,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:41,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:41,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 08:56:42,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:42,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 220186672, now seen corresponding path program 1 times [2023-11-22 08:56:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772967259] [2023-11-22 08:56:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:42,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772967259] [2023-11-22 08:56:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772967259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:42,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:42,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888462028] [2023-11-22 08:56:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:42,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:42,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:42,188 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:42,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:42,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:42,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:42,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,189 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 08:56:42,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-22 08:56:42,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash 220186673, now seen corresponding path program 1 times [2023-11-22 08:56:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938136660] [2023-11-22 08:56:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:42,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:42,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:42,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938136660] [2023-11-22 08:56:42,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938136660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:42,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:42,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130969509] [2023-11-22 08:56:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:42,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 08:56:42,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 08:56:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-22 08:56:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:42,440 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:42,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:42,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:42,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:42,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,442 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:42,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-22 08:56:42,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-22 08:56:42,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-22 08:56:42,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-22 08:56:42,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-22 08:56:42,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-22 08:56:42,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2023-11-22 08:56:42,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2023-11-22 08:56:42,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (2 of 11 remaining) [2023-11-22 08:56:42,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-22 08:56:42,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-22 08:56:42,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 08:56:42,879 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-22 08:56:42,879 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/3) [2023-11-22 08:56:42,884 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:42,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:56:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:42,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:56:42,891 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:56:42,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2023-11-22 08:56:42,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork1 ======== [2023-11-22 08:56:42,892 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;@49119963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:56:42,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 08:56:43,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -626665222, now seen corresponding path program 1 times [2023-11-22 08:56:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554634184] [2023-11-22 08:56:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:43,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554634184] [2023-11-22 08:56:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554634184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:43,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606663791] [2023-11-22 08:56:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:43,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:43,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:43,314 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:43,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 08:56:43,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:43,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1614107370, now seen corresponding path program 1 times [2023-11-22 08:56:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:43,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240562713] [2023-11-22 08:56:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:43,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:43,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241586985] [2023-11-22 08:56:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:43,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:43,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:43,542 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:43,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 08:56:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:43,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 08:56:43,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:43,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 08:56:43,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240562713] [2023-11-22 08:56:43,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241586985] [2023-11-22 08:56:43,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241586985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:43,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783096972] [2023-11-22 08:56:43,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:43,726 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:43,727 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:43,727 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 08:56:44,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 08:56:44,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:44,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1614107371, now seen corresponding path program 1 times [2023-11-22 08:56:44,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:44,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795805501] [2023-11-22 08:56:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:44,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:44,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:44,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729932315] [2023-11-22 08:56:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:44,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:44,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:44,358 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:44,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 08:56:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:44,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 08:56:44,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:44,542 INFO L378 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 11 treesize of output 7 [2023-11-22 08:56:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:44,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 08:56:44,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795805501] [2023-11-22 08:56:44,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729932315] [2023-11-22 08:56:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729932315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:44,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 08:56:44,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330564784] [2023-11-22 08:56:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:44,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 08:56:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 08:56:44,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 08:56:44,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:44,563 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:44,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:44,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:44,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:44,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 84567468, now seen corresponding path program 1 times [2023-11-22 08:56:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255670054] [2023-11-22 08:56:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:44,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:44,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375012423] [2023-11-22 08:56:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:44,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:44,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:44,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:44,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 08:56:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:45,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 08:56:45,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:45,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-22 08:56:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:45,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 08:56:45,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255670054] [2023-11-22 08:56:45,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375012423] [2023-11-22 08:56:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375012423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:56:45,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:56:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 08:56:45,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308838814] [2023-11-22 08:56:45,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:56:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 08:56:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 08:56:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 08:56:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:45,382 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:45,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:45,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:45,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:46,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:46,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:46,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -962481363, now seen corresponding path program 1 times [2023-11-22 08:56:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960262524] [2023-11-22 08:56:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:46,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592170233] [2023-11-22 08:56:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:46,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:46,113 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:46,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 08:56:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:46,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 08:56:46,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:46,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:46,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:46,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-22 08:56:46,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:46,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-22 08:56:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:46,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:56:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960262524] [2023-11-22 08:56:48,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592170233] [2023-11-22 08:56:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592170233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:48,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 08:56:48,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-22 08:56:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643766670] [2023-11-22 08:56:48,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:48,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 08:56:48,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 08:56:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-22 08:56:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:48,418 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:48,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:48,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:48,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:48,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:48,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:48,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 08:56:49,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:49,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 08:56:49,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:49,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash -503626319, now seen corresponding path program 2 times [2023-11-22 08:56:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421323715] [2023-11-22 08:56:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:49,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:49,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758473601] [2023-11-22 08:56:49,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 08:56:49,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:49,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:49,399 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:49,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 08:56:50,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 08:56:50,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:56:50,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 08:56:50,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:50,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-22 08:56:50,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 08:56:50,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-22 08:56:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-22 08:56:51,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:56:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-22 08:56:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:56:55,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421323715] [2023-11-22 08:56:55,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-22 08:56:55,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758473601] [2023-11-22 08:56:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758473601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:56:55,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 08:56:55,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-22 08:56:55,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065230237] [2023-11-22 08:56:55,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 08:56:55,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 08:56:55,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:56:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 08:56:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 08:56:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:55,295 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:56:55,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 08:56:55,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:55,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-22 08:56:55,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:56:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 08:56:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 08:56:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:56:55,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 08:56:55,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:55,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-22 08:56:55,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:56:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash 741184405, now seen corresponding path program 1 times [2023-11-22 08:56:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:56:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91141863] [2023-11-22 08:56:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:56:55,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-22 08:56:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935748150] [2023-11-22 08:56:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:56:55,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:56:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:56:55,898 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:56:55,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc16b710-5b2b-4858-84e5-b41d0e9410d5/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 08:56:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:56:57,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 135 conjunts are in the unsatisfiable core [2023-11-22 08:56:57,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:56:57,248 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-22 08:56:57,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 13 [2023-11-22 08:56:57,294 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2023-11-22 08:56:57,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 16 [2023-11-22 08:56:57,314 INFO L378 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 7 treesize of output 6 [2023-11-22 08:56:57,360 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-22 08:56:57,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-22 08:56:57,426 INFO L378 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 15 treesize of output 10 [2023-11-22 08:56:57,555 INFO L378 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 15 treesize of output 10 [2023-11-22 08:56:57,997 INFO L378 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 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-22 08:56:58,997 INFO L378 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 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-22 08:57:00,526 INFO L378 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 0 case distinctions, treesize of input 47 treesize of output 40 [2023-11-22 08:57:03,727 INFO L378 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 0 case distinctions, treesize of input 82 treesize of output 73 [2023-11-22 08:57:09,501 INFO L378 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 0 case distinctions, treesize of input 166 treesize of output 153