./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI --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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --- 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-5e519f3 [2022-11-03 03:56:49,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:56:49,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:56:49,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:56:49,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:56:49,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:56:49,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:56:49,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:56:49,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:56:49,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:56:49,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:56:49,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:56:49,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:56:49,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:56:49,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:56:49,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:56:49,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:56:49,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:56:49,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:56:49,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:56:49,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:56:49,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:56:49,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:56:49,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:56:49,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:56:49,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:56:49,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:56:49,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:56:49,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:56:49,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:56:49,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:56:49,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:56:49,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:56:49,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:56:49,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:56:49,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:56:49,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:56:49,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:56:49,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:56:49,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:56:49,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:56:49,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:56:49,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:56:49,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:56:49,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:56:49,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:56:49,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:56:49,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:56:49,576 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:56:49,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:56:49,577 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:56:49,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:56:49,577 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:56:49,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:56:49,578 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:56:49,578 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:56:49,578 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:56:49,578 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:56:49,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:56:49,579 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:56:49,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:56:49,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:56:49,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:56:49,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:56:49,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:56:49,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:56:49,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:56:49,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:56:49,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:56:49,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:56:49,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:56:49,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:56:49,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:56:49,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:56:49,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:56:49,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:56:49,584 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:56:49,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:56:49,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:56:49,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:56:49,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:56:49,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:56:49,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:56:49,585 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_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2022-11-03 03:56:49,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:56:49,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:56:49,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:56:49,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:56:49,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:56:49,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-03 03:56:50,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/data/28318f416/84896a5485a34372bc8480a82c7a0c02/FLAG942e4d227 [2022-11-03 03:56:50,536 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:56:50,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-03 03:56:50,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/data/28318f416/84896a5485a34372bc8480a82c7a0c02/FLAG942e4d227 [2022-11-03 03:56:50,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/data/28318f416/84896a5485a34372bc8480a82c7a0c02 [2022-11-03 03:56:50,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:56:50,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:56:50,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:56:50,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:56:50,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:56:50,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:56:50" (1/1) ... [2022-11-03 03:56:50,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6876249d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:50, skipping insertion in model container [2022-11-03 03:56:50,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:56:50" (1/1) ... [2022-11-03 03:56:50,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:56:50,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:56:51,168 WARN L230 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_92bf22b2-2545-4491-8376-c2eb448d2451/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-03 03:56:51,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:56:51,190 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:56:51,231 WARN L230 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_92bf22b2-2545-4491-8376-c2eb448d2451/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-03 03:56:51,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:56:51,262 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:56:51,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51 WrapperNode [2022-11-03 03:56:51,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:56:51,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:56:51,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:56:51,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:56:51,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,332 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-11-03 03:56:51,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:56:51,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:56:51,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:56:51,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:56:51,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:56:51,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:56:51,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:56:51,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:56:51,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2022-11-03 03:56:51,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:56:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:56:51,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:56:51,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:56:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:56:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 03:56:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 03:56:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 03:56:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 03:56:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:56:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:56:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:56:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 03:56:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 03:56:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:56:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:56:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:56:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:56:51,506 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:56:51,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:56:51,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:56:51,946 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:56:52,004 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:56:52,004 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:56:52,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:52 BoogieIcfgContainer [2022-11-03 03:56:52,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:56:52,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:56:52,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:56:52,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:56:52,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:56:50" (1/3) ... [2022-11-03 03:56:52,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478cd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:56:52, skipping insertion in model container [2022-11-03 03:56:52,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (2/3) ... [2022-11-03 03:56:52,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478cd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:56:52, skipping insertion in model container [2022-11-03 03:56:52,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:52" (3/3) ... [2022-11-03 03:56:52,016 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-11-03 03:56:52,025 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:56:52,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:56:52,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:56:52,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:56:52,091 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 03:56:52,137 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:56:52,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 96 transitions, 208 flow [2022-11-03 03:56:52,172 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 96 transitions, 208 flow [2022-11-03 03:56:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 208 flow [2022-11-03 03:56:52,292 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-11-03 03:56:52,294 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 03:56:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 2/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-03 03:56:52,302 INFO L118 LiptonReduction]: Number of co-enabled transitions 282 [2022-11-03 03:56:57,164 INFO L133 LiptonReduction]: Checked pairs total: 646 [2022-11-03 03:56:57,164 INFO L135 LiptonReduction]: Total number of compositions: 86 [2022-11-03 03:56:57,183 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 50 flow [2022-11-03 03:56:57,196 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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) [2022-11-03 03:56:57,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:56:57,223 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;@3b973f95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:56:57,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:56:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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) [2022-11-03 03:56:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:56:57,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:57,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:57,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-03 03:56:57,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1407145553, now seen corresponding path program 1 times [2022-11-03 03:56:57,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:57,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294593305] [2022-11-03 03:56:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:58,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:58,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294593305] [2022-11-03 03:56:58,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294593305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:58,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:58,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:56:58,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816723105] [2022-11-03 03:56:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:58,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:56:58,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:56:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:56:58,123 INFO L87 Difference]: Start difference. First operand has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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) Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-03 03:56:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:58,266 INFO L93 Difference]: Finished difference Result 46 states and 80 transitions. [2022-11-03 03:56:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:58,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) Word has length 14 [2022-11-03 03:56:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:58,279 INFO L225 Difference]: With dead ends: 46 [2022-11-03 03:56:58,280 INFO L226 Difference]: Without dead ends: 46 [2022-11-03 03:56:58,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:56:58,291 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:58,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-03 03:56:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-03 03:56:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 45 states have internal predecessors, (80), 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) [2022-11-03 03:56:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 80 transitions. [2022-11-03 03:56:58,350 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 80 transitions. Word has length 14 [2022-11-03 03:56:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:58,352 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 80 transitions. [2022-11-03 03:56:58,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-03 03:56:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 80 transitions. [2022-11-03 03:56:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:56:58,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:58,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:56:58,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-03 03:56:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1805518235, now seen corresponding path program 2 times [2022-11-03 03:56:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:58,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732985829] [2022-11-03 03:56:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:58,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:58,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732985829] [2022-11-03 03:56:58,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732985829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:58,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:58,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:58,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934675172] [2022-11-03 03:56:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:58,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:58,812 INFO L87 Difference]: Start difference. First operand 46 states and 80 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-03 03:56:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:58,908 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2022-11-03 03:56:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2022-11-03 03:56:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:58,910 INFO L225 Difference]: With dead ends: 53 [2022-11-03 03:56:58,910 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 03:56:58,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:56:58,911 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:58,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 03:56:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 03:56:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:56:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-03 03:56:58,916 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2022-11-03 03:56:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:58,916 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-03 03:56:58,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-03 03:56:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-03 03:56:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:56:58,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:58,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:56:58,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:56:58,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-03 03:56:58,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1755165525, now seen corresponding path program 3 times [2022-11-03 03:56:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:58,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527302456] [2022-11-03 03:56:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:58,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:59,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:59,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527302456] [2022-11-03 03:56:59,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527302456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:59,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:59,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:56:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086535712] [2022-11-03 03:56:59,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:59,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:59,096 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-03 03:56:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:59,130 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-11-03 03:56:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:56:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2022-11-03 03:56:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:59,131 INFO L225 Difference]: With dead ends: 10 [2022-11-03 03:56:59,131 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 03:56:59,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:56:59,135 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:59,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:56:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 03:56:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 03:56:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-03 03:56:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 03:56:59,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-03 03:56:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:59,139 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 03:56:59,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-03 03:56:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 03:56:59,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 03:56:59,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-03 03:56:59,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-03 03:56:59,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-03 03:56:59,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:56:59,147 INFO L444 BasicCegarLoop]: Path program histogram: [3] [2022-11-03 03:56:59,154 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 03:56:59,154 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:56:59,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:56:59 BasicIcfg [2022-11-03 03:56:59,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:56:59,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:56:59,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:56:59,163 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:56:59,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:52" (3/4) ... [2022-11-03 03:56:59,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 03:56:59,173 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 03:56:59,173 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 03:56:59,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-03 03:56:59,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 03:56:59,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 03:56:59,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 03:56:59,210 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:56:59,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:56:59,211 INFO L158 Benchmark]: Toolchain (without parser) took 8336.20ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 75.7MB in the beginning and 62.3MB in the end (delta: 13.4MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-11-03 03:56:59,211 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:56:59,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.82ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 91.2MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:56:59,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.37ms. Allocated memory is still 115.3MB. Free memory was 91.2MB in the beginning and 89.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:56:59,213 INFO L158 Benchmark]: Boogie Preprocessor took 52.66ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:56:59,213 INFO L158 Benchmark]: RCFGBuilder took 618.61ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 71.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 03:56:59,213 INFO L158 Benchmark]: TraceAbstraction took 7153.29ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 71.0MB in the beginning and 65.5MB in the end (delta: 5.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-11-03 03:56:59,214 INFO L158 Benchmark]: Witness Printer took 47.85ms. Allocated memory is still 138.4MB. Free memory was 65.5MB in the beginning and 62.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:56:59,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.82ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 91.2MB in the end (delta: -15.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.37ms. Allocated memory is still 115.3MB. Free memory was 91.2MB in the beginning and 89.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.66ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.61ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 71.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7153.29ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 71.0MB in the beginning and 65.5MB in the end (delta: 5.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 47.85ms. Allocated memory is still 138.4MB. Free memory was 65.5MB in the beginning and 62.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 101 PlacesBefore, 24 PlacesAfterwards, 96 TransitionsBefore, 17 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 646 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 521, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 220, positive: 204, positive conditional: 0, positive unconditional: 204, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 220, positive: 199, positive conditional: 0, positive unconditional: 199, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 76, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 521, positive: 261, positive conditional: 0, positive unconditional: 261, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 220, unknown conditional: 0, unknown unconditional: 220] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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 - PositiveResult [Line: 102]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=1, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 03:56:59,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92bf22b2-2545-4491-8376-c2eb448d2451/bin/utaipan-7li7fVZpFI/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 Result: TRUE