./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx --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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:19:18,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:19:18,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-12-02 20:19:18,839 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:19:18,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:19:18,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:19:18,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:19:18,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:19:18,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:19:18,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:19:18,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:19:18,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:19:18,867 INFO L153 SettingsManager]: * Use SBE=true [2023-12-02 20:19:18,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:19:18,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:19:18,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:19:18,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:19:18,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:19:18,870 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 20:19:18,871 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 20:19:18,871 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 20:19:18,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:19:18,872 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 20:19:18,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 20:19:18,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:19:18,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:19:18,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:19:18,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:19:18,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:19:18,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:19:18,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:19:18,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:19:18,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:19:18,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-02 20:19:18,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:19:18,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:19:18,877 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-12-02 20:19:18,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-12-02 20:19:18,877 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-12-02 20:19:18,877 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-12-02 20:19:18,878 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_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2023-12-02 20:19:19,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:19:19,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:19:19,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:19:19,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:19:19,130 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:19:19,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/../../sv-benchmarks/c/pthread/stack_longest-2.i [2023-12-02 20:19:21,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:19:22,130 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:19:22,131 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/sv-benchmarks/c/pthread/stack_longest-2.i [2023-12-02 20:19:22,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/data/712232f7e/d6235a861e47490abe1904d187215999/FLAG73546b459 [2023-12-02 20:19:22,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/data/712232f7e/d6235a861e47490abe1904d187215999 [2023-12-02 20:19:22,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:19:22,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:19:22,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:19:22,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:19:22,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:19:22,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2eaaf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22, skipping insertion in model container [2023-12-02 20:19:22,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:19:22,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:19:22,606 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:19:22,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:19:22,711 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:19:22,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22 WrapperNode [2023-12-02 20:19:22,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:19:22,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:19:22,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:19:22,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:19:22,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,795 INFO L138 Inliner]: procedures = 278, calls = 41, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 160 [2023-12-02 20:19:22,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:19:22,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:19:22,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:19:22,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:19:22,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:19:22,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:19:22,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:19:22,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:19:22,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (1/1) ... [2023-12-02 20:19:22,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:19:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:22,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:19:22,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:19:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-02 20:19:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-02 20:19:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-02 20:19:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-02 20:19:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:19:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:19:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 20:19:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 20:19:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 20:19:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 20:19:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:19:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 20:19:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:19:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:19:22,907 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 20:19:23,053 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:19:23,055 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:19:23,315 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:19:23,473 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:19:23,473 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 20:19:23,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:23 BoogieIcfgContainer [2023-12-02 20:19:23,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:19:23,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:19:23,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:19:23,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:19:23,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:19:22" (1/3) ... [2023-12-02 20:19:23,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b507635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:19:23, skipping insertion in model container [2023-12-02 20:19:23,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:22" (2/3) ... [2023-12-02 20:19:23,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b507635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:19:23, skipping insertion in model container [2023-12-02 20:19:23,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:23" (3/3) ... [2023-12-02 20:19:23,481 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-12-02 20:19:23,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:19:23,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-12-02 20:19:23,497 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 20:19:23,555 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 20:19:23,590 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:19:23,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:19:23,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:23,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:19:23,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-12-02 20:19:23,644 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:19:23,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2023-12-02 20:19:23,659 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;@1354af10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:19:23,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 20:19:23,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:23,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash -271719771, now seen corresponding path program 1 times [2023-12-02 20:19:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055476530] [2023-12-02 20:19:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:24,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:24,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055476530] [2023-12-02 20:19:24,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055476530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:19:24,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:19:24,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:19:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958068514] [2023-12-02 20:19:24,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:19:24,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:19:24,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:19:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:19:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:24,428 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:24,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:24,429 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:24,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 20:19:24,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:24,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -271719770, now seen corresponding path program 1 times [2023-12-02 20:19:24,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:24,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012619641] [2023-12-02 20:19:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012619641] [2023-12-02 20:19:24,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012619641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:19:24,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:19:24,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:19:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174105999] [2023-12-02 20:19:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:19:24,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:19:24,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:19:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:19:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:24,893 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:24,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:24,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:24,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:25,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:25,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 20:19:25,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:25,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1139511957, now seen corresponding path program 1 times [2023-12-02 20:19:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721028484] [2023-12-02 20:19:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:25,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:25,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721028484] [2023-12-02 20:19:25,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721028484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:19:25,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:19:25,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:19:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967369861] [2023-12-02 20:19:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:19:25,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:19:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:19:25,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:19:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:25,155 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:25,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2023-12-02 20:19:25,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:25,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:25,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:25,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 20:19:25,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:25,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:25,259 INFO L85 PathProgramCache]: Analyzing trace with hash 551374166, now seen corresponding path program 1 times [2023-12-02 20:19:25,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:25,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530324508] [2023-12-02 20:19:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:25,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530324508] [2023-12-02 20:19:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530324508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:19:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228787218] [2023-12-02 20:19:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:25,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:25,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:25,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:19:25,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 20:19:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:25,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 20:19:25,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:19:25,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:25,854 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 [2023-12-02 20:19:25,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:25,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:25,893 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 [2023-12-02 20:19:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:26,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:19:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228787218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:19:26,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:19:26,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-12-02 20:19:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781094256] [2023-12-02 20:19:26,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:19:26,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 20:19:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 20:19:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-02 20:19:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:26,318 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:26,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:26,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:26,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:26,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:26,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:26,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 20:19:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:27,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:27,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:27,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1665298086, now seen corresponding path program 2 times [2023-12-02 20:19:27,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:27,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510575552] [2023-12-02 20:19:27,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:27,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:28,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:28,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510575552] [2023-12-02 20:19:28,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510575552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:19:28,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611946038] [2023-12-02 20:19:28,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:19:28,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:28,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:28,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:19:28,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 20:19:28,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:19:28,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:19:28,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 20:19:28,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:19:28,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:28,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:28,568 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 [2023-12-02 20:19:28,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:28,580 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 [2023-12-02 20:19:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:29,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:19:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611946038] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:19:29,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:19:29,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 26 [2023-12-02 20:19:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642839384] [2023-12-02 20:19:29,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:19:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 20:19:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 20:19:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-12-02 20:19:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:29,616 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.0) internal successors, (135), 27 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:29,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:29,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:29,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:29,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:29,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:31,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 20:19:31,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:31,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:31,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash 721420454, now seen corresponding path program 3 times [2023-12-02 20:19:31,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717012361] [2023-12-02 20:19:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717012361] [2023-12-02 20:19:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717012361] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:19:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598205119] [2023-12-02 20:19:33,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 20:19:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:33,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:19:33,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 20:19:33,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 20:19:33,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:19:33,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-02 20:19:33,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:19:33,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:33,335 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 [2023-12-02 20:19:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 20:19:33,347 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 [2023-12-02 20:19:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 84 proven. 20 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-02 20:19:34,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:19:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-02 20:19:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598205119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:19:35,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:19:35,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6, 6] total 30 [2023-12-02 20:19:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482137534] [2023-12-02 20:19:35,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:19:35,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 20:19:35,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:35,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 20:19:35,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2023-12-02 20:19:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:35,893 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:35,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.806451612903226) internal successors, (149), 31 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:35,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:35,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:35,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:35,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:35,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:35,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:42,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 20:19:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:42,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:42,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash -70381627, now seen corresponding path program 1 times [2023-12-02 20:19:42,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:42,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075870682] [2023-12-02 20:19:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-02 20:19:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075870682] [2023-12-02 20:19:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075870682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:19:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:19:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:19:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659611411] [2023-12-02 20:19:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:19:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:19:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:19:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:19:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:42,736 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:42,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:42,737 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:19:42,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 20:19:42,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:42,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash -734677451, now seen corresponding path program 1 times [2023-12-02 20:19:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978735833] [2023-12-02 20:19:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 22 proven. 539 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978735833] [2023-12-02 20:19:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978735833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:19:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90479236] [2023-12-02 20:19:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:43,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:19:43,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 20:19:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:43,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 20:19:43,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:19:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 22 proven. 539 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:43,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:19:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 22 proven. 539 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:43,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90479236] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:19:43,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:19:43,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-12-02 20:19:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583112788] [2023-12-02 20:19:43,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:19:43,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 20:19:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:43,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 20:19:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-02 20:19:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:43,847 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:43,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.407407407407407) internal successors, (227), 26 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:19:43,848 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:19:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:19:44,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 20:19:44,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:44,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:44,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:44,409 INFO L85 PathProgramCache]: Analyzing trace with hash -778438427, now seen corresponding path program 2 times [2023-12-02 20:19:44,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:44,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89621165] [2023-12-02 20:19:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:44,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 48 proven. 2580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:45,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89621165] [2023-12-02 20:19:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89621165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:19:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447687401] [2023-12-02 20:19:45,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:19:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:45,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:19:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 20:19:46,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:19:46,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:19:46,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 20:19:46,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:19:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 48 proven. 2580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:46,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:19:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 48 proven. 2580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447687401] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:19:47,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:19:47,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2023-12-02 20:19:47,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224833076] [2023-12-02 20:19:47,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:19:47,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 20:19:47,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:19:47,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 20:19:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 20:19:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:47,123 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:19:47,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.69811320754717) internal successors, (461), 52 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 20:19:47,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:19:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:19:47,125 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:19:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:19:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:19:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:19:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 20:19:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 20:19:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:19:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 20:19:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-02 20:19:48,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 20:19:48,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:48,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 20:19:48,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:19:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1854204645, now seen corresponding path program 3 times [2023-12-02 20:19:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:19:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745709224] [2023-12-02 20:19:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:19:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:19:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:19:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 100 proven. 11225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:19:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:19:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745709224] [2023-12-02 20:19:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745709224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:19:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108634087] [2023-12-02 20:19:52,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 20:19:52,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:19:52,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:19:52,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:19:52,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c640994-d2bd-4510-85ae-4938e2665971/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process