./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/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_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/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_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:47:43,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:47:43,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-12-02 20:47:43,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:47:43,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:47:43,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:47:43,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:47:43,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:47:43,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:47:43,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:47:43,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 20:47:43,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 20:47:43,228 INFO L153 SettingsManager]: * Use SBE=true [2023-12-02 20:47:43,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:47:43,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:47:43,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:47:43,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:47:43,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:47:43,231 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 20:47:43,231 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 20:47:43,232 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 20:47:43,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:47:43,233 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 20:47:43,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 20:47:43,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:47:43,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:47:43,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:47:43,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:47:43,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:47:43,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:47:43,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:47:43,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:47:43,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:47:43,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-02 20:47:43,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:47:43,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:47:43,238 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-12-02 20:47:43,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-12-02 20:47:43,239 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-12-02 20:47:43,240 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-12-02 20:47:43,240 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_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2023-12-02 20:47:43,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:47:43,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:47:43,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:47:43,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:47:43,488 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:47:43,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-12-02 20:47:46,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:47:46,483 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:47:46,484 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-12-02 20:47:46,491 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/data/3134d9fe4/a886176e6486433c98a4764bd6d6bb96/FLAGfb698155d [2023-12-02 20:47:46,504 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/data/3134d9fe4/a886176e6486433c98a4764bd6d6bb96 [2023-12-02 20:47:46,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:47:46,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:47:46,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:47:46,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:47:46,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:47:46,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e838dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46, skipping insertion in model container [2023-12-02 20:47:46,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:47:46,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:47:46,701 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:47:46,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:47:46,729 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:47:46,730 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 20:47:46,737 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:47:46,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46 WrapperNode [2023-12-02 20:47:46,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:47:46,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:47:46,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:47:46,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:47:46,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,774 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-12-02 20:47:46,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:47:46,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:47:46,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:47:46,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:47:46,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:47:46,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:47:46,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:47:46,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:47:46,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (1/1) ... [2023-12-02 20:47:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:47:46,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:47:46,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:47:46,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:47:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:47:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 20:47:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 20:47:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 20:47:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 20:47:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 20:47:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 20:47:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 20:47:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 20:47:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 20:47:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:47:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:47:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 20:47:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 20:47:46,880 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 20:47:46,983 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:47:46,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:47:47,166 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:47:47,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:47:47,341 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 20:47:47,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:47 BoogieIcfgContainer [2023-12-02 20:47:47,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:47:47,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:47:47,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:47:47,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:47:47,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:47:46" (1/3) ... [2023-12-02 20:47:47,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93f3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:47, skipping insertion in model container [2023-12-02 20:47:47,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:46" (2/3) ... [2023-12-02 20:47:47,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93f3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:47, skipping insertion in model container [2023-12-02 20:47:47,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:47" (3/3) ... [2023-12-02 20:47:47,362 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2023-12-02 20:47:47,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:47:47,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-12-02 20:47:47,381 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 20:47:47,427 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 20:47:47,472 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:47:47,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-12-02 20:47:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:47:47,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-12-02 20:47:47,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-12-02 20:47:47,533 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-12-02 20:47:47,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-12-02 20:47:47,552 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;@42d10b7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:47:47,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-12-02 20:47:47,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-02 20:47:47,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:47:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash 22927991, now seen corresponding path program 1 times [2023-12-02 20:47:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:47:47,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112805695] [2023-12-02 20:47:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:47:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:47:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:47:48,103 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 20:47:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:47:48,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112805695] [2023-12-02 20:47:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112805695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:47:48,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:47:48,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:47:48,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915944281] [2023-12-02 20:47:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:47:48,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:47:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:47:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:47:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:47:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:48,135 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:47:48,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 20:47:48,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 20:47:48,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-02 20:47:48,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:47:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1716116811, now seen corresponding path program 1 times [2023-12-02 20:47:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:47:48,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929399698] [2023-12-02 20:47:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:47:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:47:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:47:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:48,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:47:48,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929399698] [2023-12-02 20:47:48,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929399698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:47:48,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872373639] [2023-12-02 20:47:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:47:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:47:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:47:48,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:47:48,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 20:47:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:47:48,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 20:47:48,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:47:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:48,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:47:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872373639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:47:49,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:47:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2023-12-02 20:47:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139671642] [2023-12-02 20:47:49,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:47:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 20:47:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:47:49,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 20:47:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-02 20:47:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:49,212 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:47:49,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 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 20:47:49,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:49,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:47:49,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 20:47:49,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 20:47:49,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-02 20:47:49,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:47:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1878255987, now seen corresponding path program 2 times [2023-12-02 20:47:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:47:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075216211] [2023-12-02 20:47:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:47:49,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:47:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:47:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:47:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075216211] [2023-12-02 20:47:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075216211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:47:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037222884] [2023-12-02 20:47:50,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 20:47:50,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:47:50,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:47:50,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:47:50,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 20:47:50,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 20:47:50,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:47:50,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 20:47:50,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:47:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:50,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:47:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037222884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:47:51,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:47:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 25 [2023-12-02 20:47:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595284934] [2023-12-02 20:47:51,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:47:51,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 20:47:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:47:51,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 20:47:51,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-12-02 20:47:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:51,595 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:47:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 25 states have internal predecessors, (75), 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 20:47:51,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:51,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:47:51,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:47:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 20:47:52,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 20:47:52,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:47:52,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-02 20:47:52,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:47:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1169053853, now seen corresponding path program 3 times [2023-12-02 20:47:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:47:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357210902] [2023-12-02 20:47:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:47:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:47:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:47:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:53,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:47:53,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357210902] [2023-12-02 20:47:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357210902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:47:53,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924898716] [2023-12-02 20:47:53,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 20:47:53,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:47:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:47:53,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:47:53,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 20:47:53,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 20:47:53,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:47:53,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 20:47:53,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:47:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:54,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:47:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924898716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:47:56,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:47:56,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 25 [2023-12-02 20:47:56,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377246516] [2023-12-02 20:47:56,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:47:56,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 20:47:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:47:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 20:47:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-02 20:47:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:56,550 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:47:56,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 20:47:56,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:56,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:47:56,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2023-12-02 20:47:56,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:47:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:47:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:47:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 20:47:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 20:47:57,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 20:47:57,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:47:57,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-02 20:47:57,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:47:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2092834930, now seen corresponding path program 4 times [2023-12-02 20:47:57,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:47:57,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361019378] [2023-12-02 20:47:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:47:57,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:47:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:47:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:47:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:47:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361019378] [2023-12-02 20:47:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361019378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:47:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799448461] [2023-12-02 20:47:59,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 20:47:59,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:47:59,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:47:59,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:47:59,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 20:47:59,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 20:47:59,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:47:59,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 20:47:59,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:48:08,881 WARN L293 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 63 DAG size of output: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 20:51:28,909 WARN L293 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 447 DAG size of output: 443 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 20:51:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 20:51:29,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:51:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 20:51:31,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799448461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 20:51:31,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 20:51:31,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 14] total 35 [2023-12-02 20:51:31,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410354839] [2023-12-02 20:51:31,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 20:51:31,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 20:51:31,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-02 20:51:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 20:51:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1022, Unknown=1, NotChecked=0, Total=1190 [2023-12-02 20:51:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:51:31,443 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-12-02 20:51:31,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 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 20:51:31,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:51:31,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:51:31,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2023-12-02 20:51:31,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-12-02 20:51:31,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:51:37,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:40,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:42,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:44,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:46,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:49,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:51,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:53,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:51:58,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:52:18,011 WARN L293 SmtUtils]: Spent 16.95s on a formula simplification. DAG size of input: 101 DAG size of output: 61 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 20:54:52,775 WARN L293 SmtUtils]: Spent 2.53m on a formula simplification. DAG size of input: 478 DAG size of output: 447 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 20:54:55,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:54:56,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:54:59,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:55:01,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:55:03,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:55:05,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:55:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:55:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 20:55:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 20:55:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 20:55:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-02 20:55:10,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 20:55:10,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:55:10,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-02 20:55:10,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:55:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1105461720, now seen corresponding path program 5 times [2023-12-02 20:55:10,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-02 20:55:10,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517365009] [2023-12-02 20:55:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:55:10,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:55:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:55:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 20:55:14,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-02 20:55:14,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517365009] [2023-12-02 20:55:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517365009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:55:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501773892] [2023-12-02 20:55:14,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-02 20:55:14,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:55:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 [2023-12-02 20:55:14,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:55:14,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe4b4f3-fcbb-4a0e-9c79-701601ed3d3f/bin/ugemcutter-verify-Bi2udmvEmx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 20:55:17,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-02 20:55:17,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 20:55:17,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 20:55:17,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:55:45,757 WARN L293 SmtUtils]: Spent 8.36s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 20:56:26,084 WARN L293 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 42 DAG size of output: 34 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-02 20:56:37,794 WARN L293 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 39 DAG size of output: 38 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-02 20:57:15,640 WARN L293 SmtUtils]: Spent 28.43s on a formula simplification. DAG size of input: 37 DAG size of output: 36 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-02 20:57:23,764 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)