./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-symm.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_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/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_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/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_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/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 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a --- 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 02:09:38,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:09:38,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:09:38,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:09:38,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:09:38,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:09:38,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:09:38,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:09:38,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:09:38,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:09:38,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:09:38,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:09:38,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:09:38,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:09:38,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:09:38,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:09:38,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:09:38,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:09:38,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:09:38,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:09:38,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:09:38,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:09:38,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:09:38,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:09:38,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:09:38,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:09:38,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:09:38,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:09:38,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:09:38,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:09:38,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:09:38,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:09:38,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:09:38,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:09:38,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:09:38,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:09:38,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:09:38,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:09:38,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:09:38,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:09:38,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:09:38,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:09:38,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:09:38,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:09:38,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:09:38,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:09:38,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:09:38,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:09:38,763 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:09:38,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:09:38,764 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:09:38,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:09:38,764 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:09:38,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:09:38,764 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:09:38,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:09:38,765 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:09:38,765 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:09:38,765 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:09:38,765 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:09:38,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:09:38,766 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:09:38,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:09:38,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:09:38,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:09:38,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:09:38,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:09:38,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:09:38,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:09:38,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:09:38,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:09:38,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:09:38,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:09:38,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:09:38,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:38,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:09:38,772 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:09:38,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:09:38,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:09:38,773 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:09:38,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:09:38,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:09:38,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:09:38,775 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_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a [2022-11-03 02:09:39,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:09:39,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:09:39,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:09:39,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:09:39,146 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:09:39,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-03 02:09:39,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/data/534b0fcdd/204d8a8985dc461a81dcd7fd6fcea13b/FLAG0c314b377 [2022-11-03 02:09:39,784 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:09:39,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-03 02:09:39,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/data/534b0fcdd/204d8a8985dc461a81dcd7fd6fcea13b/FLAG0c314b377 [2022-11-03 02:09:40,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/data/534b0fcdd/204d8a8985dc461a81dcd7fd6fcea13b [2022-11-03 02:09:40,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:09:40,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:09:40,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:40,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:09:40,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:09:40,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f82af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40, skipping insertion in model container [2022-11-03 02:09:40,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:09:40,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:09:40,512 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_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-03 02:09:40,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:40,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:09:40,579 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_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-03 02:09:40,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:40,595 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:09:40,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40 WrapperNode [2022-11-03 02:09:40,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:40,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:40,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:09:40,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:09:40,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,665 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 252 [2022-11-03 02:09:40,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:40,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:09:40,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:09:40,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:09:40,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,690 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:09:40,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:09:40,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:09:40,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:09:40,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (1/1) ... [2022-11-03 02:09:40,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:40,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:40,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:09:40,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:09:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:09:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 02:09:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 02:09:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 02:09:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 02:09:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:09:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-03 02:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-03 02:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:09:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:09:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:09:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:09:40,792 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 02:09:40,897 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:09:40,900 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:09:41,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:09:42,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:09:42,086 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:09:42,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:42 BoogieIcfgContainer [2022-11-03 02:09:42,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:09:42,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:09:42,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:09:42,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:09:42,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:09:40" (1/3) ... [2022-11-03 02:09:42,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0e830e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:42, skipping insertion in model container [2022-11-03 02:09:42,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:40" (2/3) ... [2022-11-03 02:09:42,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0e830e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:42, skipping insertion in model container [2022-11-03 02:09:42,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:42" (3/3) ... [2022-11-03 02:09:42,098 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2022-11-03 02:09:42,108 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:09:42,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:09:42,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:09:42,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:09:42,218 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 02:09:42,267 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:09:42,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 114 transitions, 244 flow [2022-11-03 02:09:42,288 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 114 transitions, 244 flow [2022-11-03 02:09:42,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 114 transitions, 244 flow [2022-11-03 02:09:42,386 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-03 02:09:42,387 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-03 02:09:42,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 3/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-11-03 02:09:42,391 INFO L118 LiptonReduction]: Number of co-enabled transitions 108 [2022-11-03 02:09:51,086 INFO L133 LiptonReduction]: Checked pairs total: 174 [2022-11-03 02:09:51,087 INFO L135 LiptonReduction]: Total number of compositions: 113 [2022-11-03 02:09:51,096 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2022-11-03 02:09:51,107 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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 02:09:51,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:09:51,132 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;@2db69e30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:09:51,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:09:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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 02:09:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:09:51,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:51,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:51,142 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 02:09:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -880135654, now seen corresponding path program 1 times [2022-11-03 02:09:51,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:51,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715244856] [2022-11-03 02:09:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:51,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:53,972 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 02:09:53,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715244856] [2022-11-03 02:09:53,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715244856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:53,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:53,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:53,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171443065] [2022-11-03 02:09:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:53,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:09:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:09:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:09:54,004 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 02:09:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:54,177 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-11-03 02:09:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:09:54,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-03 02:09:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:54,187 INFO L225 Difference]: With dead ends: 25 [2022-11-03 02:09:54,187 INFO L226 Difference]: Without dead ends: 18 [2022-11-03 02:09:54,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:54,192 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:54,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-03 02:09:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-03 02:09:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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 02:09:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-03 02:09:54,226 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2022-11-03 02:09:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:54,226 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-03 02:09:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 02:09:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-03 02:09:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:09:54,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:54,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:54,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:09:54,229 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 02:09:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash -734457664, now seen corresponding path program 2 times [2022-11-03 02:09:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:54,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793411939] [2022-11-03 02:09:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:54,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:56,472 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 02:09:56,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:56,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793411939] [2022-11-03 02:09:56,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793411939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:56,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:56,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610091067] [2022-11-03 02:09:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:56,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:09:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:09:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:09:56,477 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 02:09:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:56,664 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2022-11-03 02:09:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:09:56,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-03 02:09:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:56,666 INFO L225 Difference]: With dead ends: 17 [2022-11-03 02:09:56,666 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:09:56,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:56,667 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:56,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:09:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:09:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:09:56,669 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 02:09:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:09:56,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-03 02:09:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:56,670 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:09:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 02:09:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:09:56,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:09:56,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-03 02:09:56,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-03 02:09:56,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-03 02:09:56,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:09:56,677 INFO L444 BasicCegarLoop]: Path program histogram: [2] [2022-11-03 02:09:56,680 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 02:09:56,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:09:56,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:09:56 BasicIcfg [2022-11-03 02:09:56,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:09:56,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:09:56,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:09:56,684 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:09:56,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:42" (3/4) ... [2022-11-03 02:09:56,688 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:09:56,693 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 02:09:56,694 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 02:09:56,698 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-03 02:09:56,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 02:09:56,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 02:09:56,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:09:56,750 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:09:56,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:09:56,751 INFO L158 Benchmark]: Toolchain (without parser) took 16582.75ms. Allocated memory was 140.5MB in the beginning and 230.7MB in the end (delta: 90.2MB). Free memory was 108.4MB in the beginning and 93.9MB in the end (delta: 14.5MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,752 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:09:56,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.18ms. Allocated memory is still 140.5MB. Free memory was 108.1MB in the beginning and 114.3MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.23ms. Allocated memory is still 140.5MB. Free memory was 114.3MB in the beginning and 111.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,753 INFO L158 Benchmark]: Boogie Preprocessor took 28.88ms. Allocated memory is still 140.5MB. Free memory was 111.6MB in the beginning and 109.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,753 INFO L158 Benchmark]: RCFGBuilder took 1392.42ms. Allocated memory is still 140.5MB. Free memory was 109.9MB in the beginning and 97.3MB in the end (delta: 12.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,754 INFO L158 Benchmark]: TraceAbstraction took 14593.00ms. Allocated memory was 140.5MB in the beginning and 230.7MB in the end (delta: 90.2MB). Free memory was 96.5MB in the beginning and 97.1MB in the end (delta: -593.0kB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,754 INFO L158 Benchmark]: Witness Printer took 66.72ms. Allocated memory is still 230.7MB. Free memory was 97.1MB in the beginning and 93.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:09:56,757 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 96.5MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.18ms. Allocated memory is still 140.5MB. Free memory was 108.1MB in the beginning and 114.3MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.23ms. Allocated memory is still 140.5MB. Free memory was 114.3MB in the beginning and 111.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.88ms. Allocated memory is still 140.5MB. Free memory was 111.6MB in the beginning and 109.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1392.42ms. Allocated memory is still 140.5MB. Free memory was 109.9MB in the beginning and 97.3MB in the end (delta: 12.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. * TraceAbstraction took 14593.00ms. Allocated memory was 140.5MB in the beginning and 230.7MB in the end (delta: 90.2MB). Free memory was 96.5MB in the beginning and 97.1MB in the end (delta: -593.0kB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. * Witness Printer took 66.72ms. Allocated memory is still 230.7MB. Free memory was 97.1MB in the beginning and 93.9MB 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: 8.8s, 118 PlacesBefore, 21 PlacesAfterwards, 114 TransitionsBefore, 14 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 8 FixpointIterations, 91 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 113 TotalNumberOfCompositions, 174 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 174, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 82, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 82, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 174, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 82, unknown conditional: 0, unknown unconditional: 82] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 87]: 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, 122 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 02:09:56,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df7d466-195f-427b-bbc6-d2eef7f3bf7f/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