./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:24:46,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:24:46,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:24:46,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:24:46,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:24:46,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:24:46,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:24:46,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:24:46,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:24:46,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:24:46,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:24:46,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:24:46,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:24:46,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:24:46,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:24:46,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:24:46,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:24:46,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:24:46,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:24:46,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:24:46,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:24:46,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:24:46,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:24:46,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:24:46,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:24:46,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:24:46,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:24:46,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:24:46,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:24:46,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:24:46,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:24:46,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:24:46,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:24:46,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:24:46,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:24:46,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:24:46,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:24:46,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:24:46,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:24:46,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:24:46,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:24:46,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:24:46,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:24:46,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:24:46,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:24:46,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:24:46,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:24:46,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:24:46,587 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:24:46,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:24:46,587 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:24:46,588 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:24:46,588 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:24:46,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:24:46,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:24:46,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:24:46,590 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:24:46,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:24:46,591 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:24:46,591 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:24:46,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:24:46,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:24:46,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:24:46,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:24:46,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:24:46,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:24:46,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:24:46,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:24:46,595 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:24:46,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:24:46,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:24:46,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:24:46,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:24:46,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:24:46,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:46,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:24:46,597 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:24:46,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:24:46,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:24:46,598 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:24:46,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:24:46,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:24:46,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:24:46,600 INFO L138 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_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 [2022-11-19 07:24:46,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:24:46,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:24:46,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:24:46,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:24:46,887 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:24:46,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2022-11-19 07:24:46,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/data/735c41fbc/59278d21350548679bef2a40324b1a15/FLAG3fce69d09 [2022-11-19 07:24:47,426 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:24:47,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2022-11-19 07:24:47,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/data/735c41fbc/59278d21350548679bef2a40324b1a15/FLAG3fce69d09 [2022-11-19 07:24:47,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/data/735c41fbc/59278d21350548679bef2a40324b1a15 [2022-11-19 07:24:47,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:24:47,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:24:47,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:47,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:24:47,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:24:47,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1c4212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47, skipping insertion in model container [2022-11-19 07:24:47,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:24:47,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:24:48,191 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2022-11-19 07:24:48,201 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2022-11-19 07:24:48,204 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2022-11-19 07:24:48,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:48,229 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:24:48,299 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2022-11-19 07:24:48,300 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2022-11-19 07:24:48,301 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2022-11-19 07:24:48,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:48,330 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:24:48,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48 WrapperNode [2022-11-19 07:24:48,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:48,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:48,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:24:48,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:24:48,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,382 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2022-11-19 07:24:48,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:48,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:24:48,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:24:48,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:24:48,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,420 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:24:48,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:24:48,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:24:48,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:24:48,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (1/1) ... [2022-11-19 07:24:48,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:24:48,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:24:48,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:24:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-19 07:24:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-19 07:24:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:24:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:24:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:24:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:24:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:24:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-11-19 07:24:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-11-19 07:24:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-11-19 07:24:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:24:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:24:48,665 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:24:48,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:24:49,015 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:24:49,198 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:24:49,199 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:24:49,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:49 BoogieIcfgContainer [2022-11-19 07:24:49,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:24:49,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:24:49,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:24:49,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:24:49,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:24:47" (1/3) ... [2022-11-19 07:24:49,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:49, skipping insertion in model container [2022-11-19 07:24:49,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:48" (2/3) ... [2022-11-19 07:24:49,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4219b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:49, skipping insertion in model container [2022-11-19 07:24:49,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:49" (3/3) ... [2022-11-19 07:24:49,218 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2022-11-19 07:24:49,239 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:24:49,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:24:49,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:24:49,335 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a079774, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:24:49,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:24:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 32 states have internal predecessors, (39), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:24:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:24:49,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:49,351 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:49,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2142385474, now seen corresponding path program 1 times [2022-11-19 07:24:49,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:49,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923503839] [2022-11-19 07:24:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:49,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:24:49,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923503839] [2022-11-19 07:24:49,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923503839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:49,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:49,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:24:49,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291370189] [2022-11-19 07:24:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:49,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:24:49,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:24:49,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:24:49,936 INFO L87 Difference]: Start difference. First operand has 49 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 32 states have internal predecessors, (39), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:24:50,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:50,077 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2022-11-19 07:24:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:24:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2022-11-19 07:24:50,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:50,095 INFO L225 Difference]: With dead ends: 96 [2022-11-19 07:24:50,095 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 07:24:50,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:24:50,104 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:24:50,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:24:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 07:24:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-19 07:24:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-19 07:24:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2022-11-19 07:24:50,173 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2022-11-19 07:24:50,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:50,174 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-11-19 07:24:50,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:24:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2022-11-19 07:24:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:24:50,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:50,179 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:50,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:24:50,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1125308492, now seen corresponding path program 1 times [2022-11-19 07:24:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:50,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762619558] [2022-11-19 07:24:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:50,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:24:50,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:50,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762619558] [2022-11-19 07:24:50,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762619558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:50,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:50,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:24:50,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102523324] [2022-11-19 07:24:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:50,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:24:50,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:24:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:24:50,603 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:24:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:50,990 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2022-11-19 07:24:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:24:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-11-19 07:24:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:50,993 INFO L225 Difference]: With dead ends: 145 [2022-11-19 07:24:50,993 INFO L226 Difference]: Without dead ends: 100 [2022-11-19 07:24:50,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:24:50,996 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 59 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:24:50,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 152 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:24:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-19 07:24:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2022-11-19 07:24:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.24) internal successors, (62), 54 states have internal predecessors, (62), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2022-11-19 07:24:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2022-11-19 07:24:51,015 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 20 [2022-11-19 07:24:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:51,016 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2022-11-19 07:24:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:24:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2022-11-19 07:24:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:24:51,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:51,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:51,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:24:51,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash -496526016, now seen corresponding path program 1 times [2022-11-19 07:24:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:51,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13759071] [2022-11-19 07:24:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:24:51,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:24:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:24:51,177 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:24:51,178 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:24:51,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-19 07:24:51,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-19 07:24:51,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-19 07:24:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:24:51,191 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 07:24:51,195 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:24:51,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:24:51 BoogieIcfgContainer [2022-11-19 07:24:51,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:24:51,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:24:51,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:24:51,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:24:51,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:49" (3/4) ... [2022-11-19 07:24:51,251 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:24:51,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:24:51,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:24:51,305 INFO L158 Benchmark]: Toolchain (without parser) took 3543.78ms. Allocated memory was 132.1MB in the beginning and 163.6MB in the end (delta: 31.5MB). Free memory was 105.1MB in the beginning and 88.5MB in the end (delta: 16.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,305 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 132.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:51,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.82ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 95.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.96ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,307 INFO L158 Benchmark]: Boogie Preprocessor took 40.71ms. Allocated memory is still 132.1MB. Free memory was 93.7MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,307 INFO L158 Benchmark]: RCFGBuilder took 778.31ms. Allocated memory is still 132.1MB. Free memory was 91.5MB in the beginning and 62.7MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,308 INFO L158 Benchmark]: TraceAbstraction took 2038.47ms. Allocated memory was 132.1MB in the beginning and 163.6MB in the end (delta: 31.5MB). Free memory was 61.9MB in the beginning and 92.7MB in the end (delta: -30.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,308 INFO L158 Benchmark]: Witness Printer took 55.83ms. Allocated memory is still 163.6MB. Free memory was 92.7MB in the beginning and 88.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:24:51,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 132.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.82ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 95.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.96ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.71ms. Allocated memory is still 132.1MB. Free memory was 93.7MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 778.31ms. Allocated memory is still 132.1MB. Free memory was 91.5MB in the beginning and 62.7MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2038.47ms. Allocated memory was 132.1MB in the beginning and 163.6MB in the end (delta: 31.5MB). Free memory was 61.9MB in the beginning and 92.7MB in the end (delta: -30.8MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 55.83ms. Allocated memory is still 163.6MB. Free memory was 92.7MB in the beginning and 88.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L692] CALL foo() [L681] FCALL ldv_initialize() [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, mutexes={3:0}] [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-2:0}, m1={-1:0}, mutexes={3:0}] [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L684] CALL mutex_lock(m1) VAL [mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND FALSE !(&m->list != (s)) [L660] return 0; VAL [\result=0, __mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L670] CALL ldv_set_add(m, &mutexes) [L636] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND FALSE !(&m->list != (s)) [L660] return 0; VAL [\result=0, __mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L636] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] le->e = new [L640] CALL ldv_list_add(&le->list, s) [L608] EXPR head->next VAL [head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L608] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={3:0}, new={-3:4}, next={3:0}, prev={3:0}] [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new [L608] RET __ldv_list_add(new, head, head->next) VAL [head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L640] RET ldv_list_add(&le->list, s) [L670] RET ldv_set_add(m, &mutexes) [L684] RET mutex_lock(m1) VAL [m1={-1:0}, m2={-2:0}, mutexes={3:0}] [L685] CALL mutex_lock(m1) VAL [mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND TRUE &m->list != (s) [L656] EXPR m->e VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, m->e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L656] COND TRUE m->e == e [L657] return 1; VAL [\result=1, __mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] - UnprovableResult [Line: 673]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 282 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 191 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 99 mSDtfsCounter, 191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:24:51,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_244505c1-d482-4951-9795-d91ed95146d3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE