./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 778e3ae04d32637f959b85d1a08971a3e61432e093e04b2798423806241a3f5a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:09:28,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:09:28,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:09:28,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:09:28,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:09:28,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:09:28,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:09:28,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:09:28,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:09:28,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:09:28,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:09:28,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:09:28,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:09:28,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:09:28,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:09:28,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:09:28,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:09:28,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:09:28,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:09:28,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:09:28,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:09:28,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:09:28,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:09:28,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:09:28,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:09:28,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:09:28,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:09:28,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:09:28,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:09:28,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:09:28,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:09:28,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:09:28,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:09:28,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:09:28,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:09:28,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:09:28,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:09:28,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:09:28,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:09:28,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:09:28,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:09:28,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 08:09:28,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:09:28,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:09:28,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:09:28,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:09:28,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:09:28,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:09:28,842 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:09:28,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:09:28,843 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:09:28,844 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:09:28,845 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:09:28,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:09:28,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:09:28,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:09:28,847 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:09:28,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:09:28,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:09:28,848 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:09:28,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:09:28,849 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:09:28,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:09:28,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:09:28,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:09:28,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:09:28,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:09:28,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:09:28,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:09:28,852 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 08:09:28,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:09:28,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:09:28,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:09:28,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:09:28,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:09:28,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:09:28,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:09:28,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:09:28,856 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:09:28,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:09:28,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:09:28,867 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:09:28,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:09:28,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:09:28,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:09:28,868 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_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 778e3ae04d32637f959b85d1a08971a3e61432e093e04b2798423806241a3f5a [2022-11-19 08:09:29,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:09:29,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:09:29,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:09:29,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:09:29,296 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:09:29,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-deagle/floating_read-25.i [2022-11-19 08:09:29,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/data/21e0190cf/f187dd68bf1d42e5b9fb1f088d721655/FLAGe8609e572 [2022-11-19 08:09:29,946 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:09:29,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/sv-benchmarks/c/pthread-deagle/floating_read-25.i [2022-11-19 08:09:29,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/data/21e0190cf/f187dd68bf1d42e5b9fb1f088d721655/FLAGe8609e572 [2022-11-19 08:09:30,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/data/21e0190cf/f187dd68bf1d42e5b9fb1f088d721655 [2022-11-19 08:09:30,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:09:30,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:09:30,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:09:30,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:09:30,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:09:30,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:30,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db9ba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30, skipping insertion in model container [2022-11-19 08:09:30,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:30,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:09:30,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:09:30,809 WARN L1568 CHandler]: Possible shadowing of function thread [2022-11-19 08:09:30,830 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/sv-benchmarks/c/pthread-deagle/floating_read-25.i[31197,31210] [2022-11-19 08:09:30,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:09:30,848 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:09:30,899 WARN L1568 CHandler]: Possible shadowing of function thread [2022-11-19 08:09:30,904 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/sv-benchmarks/c/pthread-deagle/floating_read-25.i[31197,31210] [2022-11-19 08:09:30,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:09:30,960 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:09:30,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30 WrapperNode [2022-11-19 08:09:30,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:09:30,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:09:30,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:09:30,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:09:30,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:30,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,023 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-19 08:09:31,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:09:31,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:09:31,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:09:31,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:09:31,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,051 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:09:31,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:09:31,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:09:31,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:09:31,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (1/1) ... [2022-11-19 08:09:31,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:09:31,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:31,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:09:31,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 08:09:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-19 08:09:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-19 08:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 08:09:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:09:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:09:31,182 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:09:31,333 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:09:31,336 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:09:31,549 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:09:31,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:09:31,591 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:09:31,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:31 BoogieIcfgContainer [2022-11-19 08:09:31,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:09:31,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:09:31,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:09:31,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:09:31,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:09:30" (1/3) ... [2022-11-19 08:09:31,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b79313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:09:31, skipping insertion in model container [2022-11-19 08:09:31,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:30" (2/3) ... [2022-11-19 08:09:31,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b79313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:09:31, skipping insertion in model container [2022-11-19 08:09:31,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:31" (3/3) ... [2022-11-19 08:09:31,629 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-25.i [2022-11-19 08:09:31,640 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 08:09:31,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:09:31,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 08:09:31,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:09:31,735 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-19 08:09:31,773 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:31,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 69 transitions, 146 flow [2022-11-19 08:09:31,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 69 transitions, 146 flow [2022-11-19 08:09:31,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 69 transitions, 146 flow [2022-11-19 08:09:31,878 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-19 08:09:31,879 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-19 08:09:31,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 99 events. 7/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-19 08:09:31,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 432 [2022-11-19 08:09:34,861 INFO L134 LiptonReduction]: Checked pairs total: 611 [2022-11-19 08:09:34,862 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-11-19 08:09:34,875 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 18 transitions, 44 flow [2022-11-19 08:09:34,900 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 31 states have (on average 2.193548387096774) internal successors, (68), 43 states have internal predecessors, (68), 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) [2022-11-19 08:09:34,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:34,931 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:34,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-19 08:09:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 31 states have (on average 2.193548387096774) internal successors, (68), 43 states have internal predecessors, (68), 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) [2022-11-19 08:09:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:09:34,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:34,940 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:09:34,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-19 08:09:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 281, now seen corresponding path program 1 times [2022-11-19 08:09:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:34,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142047415] [2022-11-19 08:09:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:35,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:35,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142047415] [2022-11-19 08:09:35,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142047415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:35,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:35,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:09:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037389185] [2022-11-19 08:09:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:35,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:35,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:35,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:35,141 INFO L87 Difference]: Start difference. First operand has 44 states, 31 states have (on average 2.193548387096774) internal successors, (68), 43 states have internal predecessors, (68), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:35,175 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-11-19 08:09:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:09:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:35,187 INFO L225 Difference]: With dead ends: 29 [2022-11-19 08:09:35,187 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:09:35,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:35,192 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:35,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:09:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 08:09:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-11-19 08:09:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-19 08:09:35,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 1 [2022-11-19 08:09:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:35,230 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-19 08:09:35,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-19 08:09:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:09:35,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:35,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:09:35,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:09:35,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-19 08:09:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:35,233 INFO L85 PathProgramCache]: Analyzing trace with hash 277862, now seen corresponding path program 1 times [2022-11-19 08:09:35,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:35,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165148808] [2022-11-19 08:09:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:35,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165148808] [2022-11-19 08:09:35,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165148808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:35,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:35,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703551069] [2022-11-19 08:09:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:35,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:35,390 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:35,415 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-11-19 08:09:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:35,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:09:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:35,417 INFO L225 Difference]: With dead ends: 15 [2022-11-19 08:09:35,417 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 08:09:35,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:35,421 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:35,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 08:09:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 08:09:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-19 08:09:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-19 08:09:35,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 3 [2022-11-19 08:09:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:35,434 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-19 08:09:35,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-19 08:09:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:09:35,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:35,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:09:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:09:35,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-19 08:09:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash -290937386, now seen corresponding path program 1 times [2022-11-19 08:09:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581924342] [2022-11-19 08:09:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:09:35,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:35,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581924342] [2022-11-19 08:09:35,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581924342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:35,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:35,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592223247] [2022-11-19 08:09:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:35,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:35,529 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 08:09:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:35,546 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-19 08:09:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-19 08:09:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:35,547 INFO L225 Difference]: With dead ends: 15 [2022-11-19 08:09:35,547 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 08:09:35,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:35,549 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:35,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 08:09:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 08:09:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-11-19 08:09:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-19 08:09:35,556 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2022-11-19 08:09:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:35,556 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-19 08:09:35,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 08:09:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-19 08:09:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:09:35,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:35,557 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:09:35,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:09:35,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-11-19 08:09:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:35,559 INFO L85 PathProgramCache]: Analyzing trace with hash -290936683, now seen corresponding path program 1 times [2022-11-19 08:09:35,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:35,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200641116] [2022-11-19 08:09:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:35,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:35,619 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:35,619 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:35,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-19 08:09:35,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-11-19 08:09:35,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2022-11-19 08:09:35,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-11-19 08:09:35,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-11-19 08:09:35,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-11-19 08:09:35,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:09:35,627 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 08:09:35,630 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:09:35,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 08:09:35,647 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 08:09:35,651 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:35,651 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 77 transitions, 172 flow [2022-11-19 08:09:35,651 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 77 transitions, 172 flow [2022-11-19 08:09:35,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2022-11-19 08:09:35,706 INFO L130 PetriNetUnfolder]: 13/168 cut-off events. [2022-11-19 08:09:35,706 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-19 08:09:35,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 168 events. 13/168 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2022-11-19 08:09:35,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 1068 [2022-11-19 08:09:38,382 INFO L134 LiptonReduction]: Checked pairs total: 1679 [2022-11-19 08:09:38,382 INFO L136 LiptonReduction]: Total number of compositions: 67 [2022-11-19 08:09:38,383 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 24 transitions, 66 flow [2022-11-19 08:09:38,404 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 177 states, 144 states have (on average 2.5555555555555554) internal successors, (368), 176 states have internal predecessors, (368), 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) [2022-11-19 08:09:38,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:38,414 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:38,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-19 08:09:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 144 states have (on average 2.5555555555555554) internal successors, (368), 176 states have internal predecessors, (368), 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) [2022-11-19 08:09:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:09:38,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:38,421 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:09:38,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-19 08:09:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 433, now seen corresponding path program 1 times [2022-11-19 08:09:38,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:38,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391107222] [2022-11-19 08:09:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:38,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391107222] [2022-11-19 08:09:38,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391107222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:38,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:38,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:09:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733952824] [2022-11-19 08:09:38,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:38,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:38,459 INFO L87 Difference]: Start difference. First operand has 177 states, 144 states have (on average 2.5555555555555554) internal successors, (368), 176 states have internal predecessors, (368), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:38,499 INFO L93 Difference]: Finished difference Result 88 states and 149 transitions. [2022-11-19 08:09:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:09:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:38,504 INFO L225 Difference]: With dead ends: 88 [2022-11-19 08:09:38,507 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 08:09:38,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:38,508 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:38,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 08:09:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-19 08:09:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.829268292682927) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:09:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 75 transitions. [2022-11-19 08:09:38,525 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 75 transitions. Word has length 1 [2022-11-19 08:09:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:38,525 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 75 transitions. [2022-11-19 08:09:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 75 transitions. [2022-11-19 08:09:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:09:38,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:38,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:09:38,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:09:38,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-19 08:09:38,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash 428694, now seen corresponding path program 1 times [2022-11-19 08:09:38,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:38,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770013919] [2022-11-19 08:09:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:38,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:38,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:38,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770013919] [2022-11-19 08:09:38,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770013919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:38,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:38,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393624454] [2022-11-19 08:09:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:38,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:38,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:38,608 INFO L87 Difference]: Start difference. First operand 45 states and 75 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:38,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:38,628 INFO L93 Difference]: Finished difference Result 43 states and 73 transitions. [2022-11-19 08:09:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:38,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:09:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:38,630 INFO L225 Difference]: With dead ends: 43 [2022-11-19 08:09:38,630 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 08:09:38,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:38,632 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:38,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 08:09:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-19 08:09:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.825) internal successors, (73), 42 states have internal predecessors, (73), 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) [2022-11-19 08:09:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 73 transitions. [2022-11-19 08:09:38,639 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 73 transitions. Word has length 3 [2022-11-19 08:09:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:38,640 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 73 transitions. [2022-11-19 08:09:38,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 73 transitions. [2022-11-19 08:09:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:09:38,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:38,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:09:38,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-19 08:09:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1579557724, now seen corresponding path program 1 times [2022-11-19 08:09:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:38,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489761496] [2022-11-19 08:09:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:38,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489761496] [2022-11-19 08:09:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489761496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880670072] [2022-11-19 08:09:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:38,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:38,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:38,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:09:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:38,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:38,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:09:38,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:09:38,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880670072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:38,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:09:38,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:09:38,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997091713] [2022-11-19 08:09:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:38,843 INFO L87 Difference]: Start difference. First operand 43 states and 73 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:38,892 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2022-11-19 08:09:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:09:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:38,894 INFO L225 Difference]: With dead ends: 45 [2022-11-19 08:09:38,895 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 08:09:38,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:38,896 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:38,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 08:09:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-19 08:09:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.7) internal successors, (68), 42 states have internal predecessors, (68), 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) [2022-11-19 08:09:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 68 transitions. [2022-11-19 08:09:38,903 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 68 transitions. Word has length 7 [2022-11-19 08:09:38,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:38,903 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 68 transitions. [2022-11-19 08:09:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 68 transitions. [2022-11-19 08:09:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:09:38,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:38,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:38,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:09:39,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:09:39,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-19 08:09:39,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1721652996, now seen corresponding path program 1 times [2022-11-19 08:09:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:39,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842807304] [2022-11-19 08:09:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:39,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842807304] [2022-11-19 08:09:39,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842807304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806464315] [2022-11-19 08:09:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:39,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:39,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:39,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:09:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:39,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:39,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:39,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:39,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806464315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:39,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171638565] [2022-11-19 08:09:39,386 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:39,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:39,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 08:09:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852036722] [2022-11-19 08:09:39,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:39,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:09:39,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:09:39,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:39,398 INFO L87 Difference]: Start difference. First operand 43 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:39,443 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2022-11-19 08:09:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:09:39,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 8 [2022-11-19 08:09:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:39,445 INFO L225 Difference]: With dead ends: 31 [2022-11-19 08:09:39,445 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 08:09:39,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:39,446 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:39,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 6 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 08:09:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 08:09:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 30 states have internal predecessors, (51), 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) [2022-11-19 08:09:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2022-11-19 08:09:39,452 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 8 [2022-11-19 08:09:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:39,452 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2022-11-19 08:09:39,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2022-11-19 08:09:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:09:39,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:39,454 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:09:39,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:39,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 08:09:39,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2022-11-19 08:09:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash -38927357, now seen corresponding path program 1 times [2022-11-19 08:09:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:39,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898984612] [2022-11-19 08:09:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:39,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:39,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:39,720 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:39,724 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:39,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-19 08:09:39,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2022-11-19 08:09:39,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2022-11-19 08:09:39,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2022-11-19 08:09:39,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2022-11-19 08:09:39,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2022-11-19 08:09:39,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2022-11-19 08:09:39,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:09:39,736 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 08:09:39,736 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:09:39,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 08:09:39,762 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 08:09:39,766 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:39,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 85 transitions, 200 flow [2022-11-19 08:09:39,768 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 85 transitions, 200 flow [2022-11-19 08:09:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 200 flow [2022-11-19 08:09:39,892 INFO L130 PetriNetUnfolder]: 24/282 cut-off events. [2022-11-19 08:09:39,899 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-19 08:09:39,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 282 events. 24/282 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 728 event pairs, 1 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2022-11-19 08:09:39,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 1764 [2022-11-19 08:09:42,635 INFO L134 LiptonReduction]: Checked pairs total: 2393 [2022-11-19 08:09:42,635 INFO L136 LiptonReduction]: Total number of compositions: 71 [2022-11-19 08:09:42,636 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2022-11-19 08:09:42,675 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 636 states, 551 states have (on average 3.0326678765880217) internal successors, (1671), 635 states have internal predecessors, (1671), 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) [2022-11-19 08:09:42,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:42,676 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:42,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 08:09:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 636 states, 551 states have (on average 3.0326678765880217) internal successors, (1671), 635 states have internal predecessors, (1671), 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) [2022-11-19 08:09:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:09:42,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:42,680 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:09:42,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:09:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 597, now seen corresponding path program 1 times [2022-11-19 08:09:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:42,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290243102] [2022-11-19 08:09:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:42,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:42,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:42,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290243102] [2022-11-19 08:09:42,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290243102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:42,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:42,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:09:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431039312] [2022-11-19 08:09:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:42,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:42,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:42,692 INFO L87 Difference]: Start difference. First operand has 636 states, 551 states have (on average 3.0326678765880217) internal successors, (1671), 635 states have internal predecessors, (1671), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:42,724 INFO L93 Difference]: Finished difference Result 230 states and 479 transitions. [2022-11-19 08:09:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:42,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:09:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:42,726 INFO L225 Difference]: With dead ends: 230 [2022-11-19 08:09:42,726 INFO L226 Difference]: Without dead ends: 97 [2022-11-19 08:09:42,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:42,728 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:42,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-19 08:09:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-19 08:09:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 2.2065217391304346) internal successors, (203), 96 states have internal predecessors, (203), 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) [2022-11-19 08:09:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 203 transitions. [2022-11-19 08:09:42,739 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 203 transitions. Word has length 1 [2022-11-19 08:09:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:42,739 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 203 transitions. [2022-11-19 08:09:42,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 203 transitions. [2022-11-19 08:09:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:09:42,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:42,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:09:42,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:09:42,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:09:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 591503, now seen corresponding path program 1 times [2022-11-19 08:09:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:42,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66905614] [2022-11-19 08:09:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:42,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:42,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:42,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66905614] [2022-11-19 08:09:42,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66905614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:42,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:42,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929790583] [2022-11-19 08:09:42,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:42,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:42,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:42,771 INFO L87 Difference]: Start difference. First operand 97 states and 203 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:42,793 INFO L93 Difference]: Finished difference Result 95 states and 201 transitions. [2022-11-19 08:09:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:42,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:09:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:42,795 INFO L225 Difference]: With dead ends: 95 [2022-11-19 08:09:42,796 INFO L226 Difference]: Without dead ends: 95 [2022-11-19 08:09:42,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:42,797 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:42,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-19 08:09:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-19 08:09:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 2.208791208791209) internal successors, (201), 94 states have internal predecessors, (201), 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) [2022-11-19 08:09:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 201 transitions. [2022-11-19 08:09:42,807 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 201 transitions. Word has length 3 [2022-11-19 08:09:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:42,807 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 201 transitions. [2022-11-19 08:09:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 201 transitions. [2022-11-19 08:09:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:09:42,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:42,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:42,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:09:42,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:09:42,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1709346707, now seen corresponding path program 1 times [2022-11-19 08:09:42,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:42,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350461171] [2022-11-19 08:09:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:42,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:42,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350461171] [2022-11-19 08:09:42,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350461171] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521634866] [2022-11-19 08:09:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:42,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:42,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:42,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:09:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:42,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:42,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:09:42,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:09:42,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521634866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:42,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:09:42,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:09:42,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236475500] [2022-11-19 08:09:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:42,984 INFO L87 Difference]: Start difference. First operand 95 states and 201 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:43,012 INFO L93 Difference]: Finished difference Result 103 states and 203 transitions. [2022-11-19 08:09:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:43,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:09:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:43,014 INFO L225 Difference]: With dead ends: 103 [2022-11-19 08:09:43,014 INFO L226 Difference]: Without dead ends: 100 [2022-11-19 08:09:43,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:43,016 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:43,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-19 08:09:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-19 08:09:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 2.0833333333333335) internal successors, (200), 99 states have internal predecessors, (200), 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) [2022-11-19 08:09:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 200 transitions. [2022-11-19 08:09:43,025 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 200 transitions. Word has length 7 [2022-11-19 08:09:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:43,025 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 200 transitions. [2022-11-19 08:09:43,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 200 transitions. [2022-11-19 08:09:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:09:43,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:43,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:43,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 08:09:43,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:09:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1450144697, now seen corresponding path program 1 times [2022-11-19 08:09:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:43,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488380456] [2022-11-19 08:09:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:43,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:43,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488380456] [2022-11-19 08:09:43,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488380456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686412498] [2022-11-19 08:09:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:43,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:43,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:43,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:43,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:09:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:43,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:43,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:43,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:43,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686412498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:43,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1998077965] [2022-11-19 08:09:43,436 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:43,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:43,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 08:09:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108947952] [2022-11-19 08:09:43,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:09:43,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:43,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:09:43,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:43,449 INFO L87 Difference]: Start difference. First operand 100 states and 200 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:43,489 INFO L93 Difference]: Finished difference Result 67 states and 139 transitions. [2022-11-19 08:09:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:09:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 8 [2022-11-19 08:09:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:43,491 INFO L225 Difference]: With dead ends: 67 [2022-11-19 08:09:43,491 INFO L226 Difference]: Without dead ends: 67 [2022-11-19 08:09:43,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:43,492 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:43,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 7 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-19 08:09:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-19 08:09:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 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) [2022-11-19 08:09:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 139 transitions. [2022-11-19 08:09:43,498 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 139 transitions. Word has length 8 [2022-11-19 08:09:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:43,498 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 139 transitions. [2022-11-19 08:09:43,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 139 transitions. [2022-11-19 08:09:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:09:43,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:43,500 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 08:09:43,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:43,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:43,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:09:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1011163807, now seen corresponding path program 1 times [2022-11-19 08:09:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:43,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203711973] [2022-11-19 08:09:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:43,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:43,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:43,759 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:43,760 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:43,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-19 08:09:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-19 08:09:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-19 08:09:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-19 08:09:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-19 08:09:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-19 08:09:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-19 08:09:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-19 08:09:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:09:43,766 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 08:09:43,767 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:09:43,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 08:09:43,801 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 08:09:43,805 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:43,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 93 transitions, 230 flow [2022-11-19 08:09:43,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 93 transitions, 230 flow [2022-11-19 08:09:43,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 230 flow [2022-11-19 08:09:43,887 INFO L130 PetriNetUnfolder]: 47/488 cut-off events. [2022-11-19 08:09:43,887 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-19 08:09:43,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 488 events. 47/488 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1723 event pairs, 6 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 302. Up to 32 conditions per place. [2022-11-19 08:09:43,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 2568 [2022-11-19 08:09:46,718 INFO L134 LiptonReduction]: Checked pairs total: 4112 [2022-11-19 08:09:46,718 INFO L136 LiptonReduction]: Total number of compositions: 78 [2022-11-19 08:09:46,719 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 108 flow [2022-11-19 08:09:46,848 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2301 states, 2076 states have (on average 3.519267822736031) internal successors, (7306), 2300 states have internal predecessors, (7306), 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) [2022-11-19 08:09:46,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:46,850 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:46,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-19 08:09:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 2301 states, 2076 states have (on average 3.519267822736031) internal successors, (7306), 2300 states have internal predecessors, (7306), 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) [2022-11-19 08:09:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:09:46,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:46,859 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:09:46,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-19 08:09:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 776, now seen corresponding path program 1 times [2022-11-19 08:09:46,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:46,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110602563] [2022-11-19 08:09:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:46,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:46,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110602563] [2022-11-19 08:09:46,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110602563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:46,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:46,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:09:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152482774] [2022-11-19 08:09:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:46,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:46,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:46,883 INFO L87 Difference]: Start difference. First operand has 2301 states, 2076 states have (on average 3.519267822736031) internal successors, (7306), 2300 states have internal predecessors, (7306), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:46,922 INFO L93 Difference]: Finished difference Result 604 states and 1497 transitions. [2022-11-19 08:09:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:09:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:46,925 INFO L225 Difference]: With dead ends: 604 [2022-11-19 08:09:46,925 INFO L226 Difference]: Without dead ends: 201 [2022-11-19 08:09:46,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:46,927 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:46,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-19 08:09:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-19 08:09:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 2.6205128205128205) internal successors, (511), 200 states have internal predecessors, (511), 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) [2022-11-19 08:09:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 511 transitions. [2022-11-19 08:09:46,962 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 511 transitions. Word has length 1 [2022-11-19 08:09:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:46,963 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 511 transitions. [2022-11-19 08:09:46,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 511 transitions. [2022-11-19 08:09:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:09:46,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:46,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:09:46,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:09:46,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-19 08:09:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 769080, now seen corresponding path program 1 times [2022-11-19 08:09:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:46,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833567579] [2022-11-19 08:09:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:46,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:46,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:46,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833567579] [2022-11-19 08:09:46,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833567579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:46,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:46,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50470427] [2022-11-19 08:09:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:46,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:46,990 INFO L87 Difference]: Start difference. First operand 201 states and 511 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:47,021 INFO L93 Difference]: Finished difference Result 199 states and 509 transitions. [2022-11-19 08:09:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:09:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:47,026 INFO L225 Difference]: With dead ends: 199 [2022-11-19 08:09:47,026 INFO L226 Difference]: Without dead ends: 199 [2022-11-19 08:09:47,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:47,028 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:47,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-19 08:09:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-19 08:09:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 194 states have (on average 2.6237113402061856) internal successors, (509), 198 states have internal predecessors, (509), 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) [2022-11-19 08:09:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 509 transitions. [2022-11-19 08:09:47,045 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 509 transitions. Word has length 3 [2022-11-19 08:09:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:47,045 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 509 transitions. [2022-11-19 08:09:47,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 509 transitions. [2022-11-19 08:09:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:09:47,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:47,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:47,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:09:47,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-19 08:09:47,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1615909887, now seen corresponding path program 1 times [2022-11-19 08:09:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:47,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989747460] [2022-11-19 08:09:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:47,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989747460] [2022-11-19 08:09:47,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989747460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:47,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787415226] [2022-11-19 08:09:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:47,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:47,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:47,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:47,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:09:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:47,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:47,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:09:47,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:09:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787415226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:47,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:09:47,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:09:47,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029811648] [2022-11-19 08:09:47,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:47,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:47,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:47,205 INFO L87 Difference]: Start difference. First operand 199 states and 509 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:47,261 INFO L93 Difference]: Finished difference Result 221 states and 534 transitions. [2022-11-19 08:09:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:47,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:09:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:47,270 INFO L225 Difference]: With dead ends: 221 [2022-11-19 08:09:47,270 INFO L226 Difference]: Without dead ends: 217 [2022-11-19 08:09:47,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:47,271 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 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 [2022-11-19 08:09:47,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-19 08:09:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-11-19 08:09:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 2.5) internal successors, (530), 216 states have internal predecessors, (530), 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) [2022-11-19 08:09:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 530 transitions. [2022-11-19 08:09:47,298 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 530 transitions. Word has length 7 [2022-11-19 08:09:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:47,298 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 530 transitions. [2022-11-19 08:09:47,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 530 transitions. [2022-11-19 08:09:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:09:47,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:47,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:47,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:47,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-19 08:09:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1446406140, now seen corresponding path program 1 times [2022-11-19 08:09:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:47,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886958769] [2022-11-19 08:09:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:47,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:47,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:47,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886958769] [2022-11-19 08:09:47,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886958769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039926274] [2022-11-19 08:09:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:47,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:47,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:09:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:47,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:47,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:47,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:47,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039926274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:47,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [799285037] [2022-11-19 08:09:47,706 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:47,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:47,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 08:09:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592110263] [2022-11-19 08:09:47,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:09:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:09:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:47,710 INFO L87 Difference]: Start difference. First operand 217 states and 530 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:47,770 INFO L93 Difference]: Finished difference Result 184 states and 469 transitions. [2022-11-19 08:09:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:09:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 8 [2022-11-19 08:09:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:47,773 INFO L225 Difference]: With dead ends: 184 [2022-11-19 08:09:47,774 INFO L226 Difference]: Without dead ends: 184 [2022-11-19 08:09:47,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:47,777 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:47,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 10 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-19 08:09:47,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-19 08:09:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 2.576923076923077) internal successors, (469), 183 states have internal predecessors, (469), 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) [2022-11-19 08:09:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 469 transitions. [2022-11-19 08:09:47,788 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 469 transitions. Word has length 8 [2022-11-19 08:09:47,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:47,788 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 469 transitions. [2022-11-19 08:09:47,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:47,789 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 469 transitions. [2022-11-19 08:09:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 08:09:47,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:47,797 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:47,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:48,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 08:09:48,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-19 08:09:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1365352475, now seen corresponding path program 1 times [2022-11-19 08:09:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:48,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928821886] [2022-11-19 08:09:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:48,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:48,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:48,064 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:48,066 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:48,066 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-19 08:09:48,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-19 08:09:48,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-19 08:09:48,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-19 08:09:48,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-19 08:09:48,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-19 08:09:48,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-19 08:09:48,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-19 08:09:48,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-19 08:09:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 08:09:48,069 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 08:09:48,073 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:09:48,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-19 08:09:48,102 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-19 08:09:48,109 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:48,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 101 transitions, 262 flow [2022-11-19 08:09:48,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 101 transitions, 262 flow [2022-11-19 08:09:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 101 transitions, 262 flow [2022-11-19 08:09:48,313 INFO L130 PetriNetUnfolder]: 98/882 cut-off events. [2022-11-19 08:09:48,313 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-19 08:09:48,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 882 events. 98/882 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4065 event pairs, 23 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 533. Up to 80 conditions per place. [2022-11-19 08:09:48,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 3480 [2022-11-19 08:09:51,118 INFO L134 LiptonReduction]: Checked pairs total: 5606 [2022-11-19 08:09:51,119 INFO L136 LiptonReduction]: Total number of compositions: 83 [2022-11-19 08:09:51,119 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 36 transitions, 132 flow [2022-11-19 08:09:51,500 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 7835 states have (on average 4.007275047862157) internal successors, (31397), 8447 states have internal predecessors, (31397), 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) [2022-11-19 08:09:51,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:51,502 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:51,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 08:09:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 8448 states, 7835 states have (on average 4.007275047862157) internal successors, (31397), 8447 states have internal predecessors, (31397), 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) [2022-11-19 08:09:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:09:51,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:51,525 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:09:51,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 08:09:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash 969, now seen corresponding path program 1 times [2022-11-19 08:09:51,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:51,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792835906] [2022-11-19 08:09:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:51,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:51,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:51,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792835906] [2022-11-19 08:09:51,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792835906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:51,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:51,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:09:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485106484] [2022-11-19 08:09:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:51,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:51,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:51,557 INFO L87 Difference]: Start difference. First operand has 8448 states, 7835 states have (on average 4.007275047862157) internal successors, (31397), 8447 states have internal predecessors, (31397), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:51,615 INFO L93 Difference]: Finished difference Result 1622 states and 4663 transitions. [2022-11-19 08:09:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:09:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:51,621 INFO L225 Difference]: With dead ends: 1622 [2022-11-19 08:09:51,621 INFO L226 Difference]: Without dead ends: 409 [2022-11-19 08:09:51,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:51,622 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:51,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-19 08:09:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-11-19 08:09:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 402 states have (on average 3.0621890547263684) internal successors, (1231), 408 states have internal predecessors, (1231), 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) [2022-11-19 08:09:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1231 transitions. [2022-11-19 08:09:51,641 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1231 transitions. Word has length 1 [2022-11-19 08:09:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:51,641 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 1231 transitions. [2022-11-19 08:09:51,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1231 transitions. [2022-11-19 08:09:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:09:51,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:51,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:09:51,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 08:09:51,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 08:09:51,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:51,643 INFO L85 PathProgramCache]: Analyzing trace with hash 958669, now seen corresponding path program 1 times [2022-11-19 08:09:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:51,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998774272] [2022-11-19 08:09:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:51,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:51,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:51,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998774272] [2022-11-19 08:09:51,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998774272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:51,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:51,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:51,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620193078] [2022-11-19 08:09:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:51,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:51,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:51,781 INFO L87 Difference]: Start difference. First operand 409 states and 1231 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:51,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:51,817 INFO L93 Difference]: Finished difference Result 407 states and 1229 transitions. [2022-11-19 08:09:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:51,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:09:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:51,821 INFO L225 Difference]: With dead ends: 407 [2022-11-19 08:09:51,821 INFO L226 Difference]: Without dead ends: 407 [2022-11-19 08:09:51,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:51,822 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:51,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-19 08:09:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2022-11-19 08:09:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 401 states have (on average 3.064837905236908) internal successors, (1229), 406 states have internal predecessors, (1229), 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) [2022-11-19 08:09:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1229 transitions. [2022-11-19 08:09:51,840 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1229 transitions. Word has length 3 [2022-11-19 08:09:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:51,840 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 1229 transitions. [2022-11-19 08:09:51,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1229 transitions. [2022-11-19 08:09:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:09:51,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:51,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:51,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 08:09:51,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 08:09:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1657255295, now seen corresponding path program 1 times [2022-11-19 08:09:51,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:51,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771176211] [2022-11-19 08:09:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:51,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:51,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:51,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771176211] [2022-11-19 08:09:51,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771176211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:51,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108941148] [2022-11-19 08:09:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:51,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:51,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:51,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:09:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:52,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:52,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:09:52,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:09:52,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108941148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:52,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:09:52,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:09:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230668417] [2022-11-19 08:09:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:52,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:52,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:52,018 INFO L87 Difference]: Start difference. First operand 407 states and 1229 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:52,122 INFO L93 Difference]: Finished difference Result 459 states and 1323 transitions. [2022-11-19 08:09:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:52,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:09:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:52,128 INFO L225 Difference]: With dead ends: 459 [2022-11-19 08:09:52,130 INFO L226 Difference]: Without dead ends: 454 [2022-11-19 08:09:52,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:52,132 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 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 [2022-11-19 08:09:52,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-11-19 08:09:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2022-11-19 08:09:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 448 states have (on average 2.9419642857142856) internal successors, (1318), 453 states have internal predecessors, (1318), 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) [2022-11-19 08:09:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1318 transitions. [2022-11-19 08:09:52,152 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1318 transitions. Word has length 7 [2022-11-19 08:09:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:52,153 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 1318 transitions. [2022-11-19 08:09:52,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1318 transitions. [2022-11-19 08:09:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:09:52,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:52,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:52,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-19 08:09:52,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 08:09:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -164687461, now seen corresponding path program 1 times [2022-11-19 08:09:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:52,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044687767] [2022-11-19 08:09:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:52,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044687767] [2022-11-19 08:09:52,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044687767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:52,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643298555] [2022-11-19 08:09:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:52,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:52,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:52,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:52,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:09:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:52,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:52,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:52,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:52,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643298555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:52,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2130326913] [2022-11-19 08:09:52,593 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:52,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:52,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 08:09:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463894221] [2022-11-19 08:09:52,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:52,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:09:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:52,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:09:52,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:52,596 INFO L87 Difference]: Start difference. First operand 454 states and 1318 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:52,687 INFO L93 Difference]: Finished difference Result 421 states and 1257 transitions. [2022-11-19 08:09:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:09:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 8 [2022-11-19 08:09:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:52,691 INFO L225 Difference]: With dead ends: 421 [2022-11-19 08:09:52,692 INFO L226 Difference]: Without dead ends: 421 [2022-11-19 08:09:52,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:09:52,693 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-19 08:09:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2022-11-19 08:09:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 418 states have (on average 3.007177033492823) internal successors, (1257), 420 states have internal predecessors, (1257), 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) [2022-11-19 08:09:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1257 transitions. [2022-11-19 08:09:52,711 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1257 transitions. Word has length 8 [2022-11-19 08:09:52,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:52,711 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 1257 transitions. [2022-11-19 08:09:52,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:09:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1257 transitions. [2022-11-19 08:09:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:09:52,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:52,713 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:52,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:52,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:52,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 08:09:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1501822620, now seen corresponding path program 1 times [2022-11-19 08:09:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:52,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637445147] [2022-11-19 08:09:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:52,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:53,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:53,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637445147] [2022-11-19 08:09:53,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637445147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:53,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837597294] [2022-11-19 08:09:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:53,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:53,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:53,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:53,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:09:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:53,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:09:53,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:53,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:53,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837597294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:53,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166005742] [2022-11-19 08:09:53,317 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:53,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:53,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-19 08:09:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819519606] [2022-11-19 08:09:53,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:53,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 08:09:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 08:09:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:09:53,320 INFO L87 Difference]: Start difference. First operand 421 states and 1257 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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) [2022-11-19 08:09:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:53,407 INFO L93 Difference]: Finished difference Result 283 states and 847 transitions. [2022-11-19 08:09:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:09:53,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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 20 [2022-11-19 08:09:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:53,410 INFO L225 Difference]: With dead ends: 283 [2022-11-19 08:09:53,410 INFO L226 Difference]: Without dead ends: 283 [2022-11-19 08:09:53,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:09:53,412 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 74 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:53,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 9 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-19 08:09:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-11-19 08:09:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 3.00354609929078) internal successors, (847), 282 states have internal predecessors, (847), 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) [2022-11-19 08:09:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 847 transitions. [2022-11-19 08:09:53,429 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 847 transitions. Word has length 20 [2022-11-19 08:09:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:53,430 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 847 transitions. [2022-11-19 08:09:53,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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) [2022-11-19 08:09:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 847 transitions. [2022-11-19 08:09:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:09:53,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:53,432 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:53,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:53,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-19 08:09:53,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 08:09:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:53,639 INFO L85 PathProgramCache]: Analyzing trace with hash 777390267, now seen corresponding path program 1 times [2022-11-19 08:09:53,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:53,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652861589] [2022-11-19 08:09:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:53,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:53,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:09:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:09:53,707 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:09:53,708 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:09:53,708 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-19 08:09:53,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-19 08:09:53,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-19 08:09:53,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-19 08:09:53,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-19 08:09:53,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-19 08:09:53,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-19 08:09:53,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-19 08:09:53,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-19 08:09:53,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-19 08:09:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-19 08:09:53,711 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 08:09:53,712 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:09:53,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-19 08:09:53,738 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-19 08:09:53,741 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:09:53,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 109 transitions, 296 flow [2022-11-19 08:09:53,742 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 109 transitions, 296 flow [2022-11-19 08:09:53,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 109 transitions, 296 flow [2022-11-19 08:09:54,138 INFO L130 PetriNetUnfolder]: 213/1660 cut-off events. [2022-11-19 08:09:54,138 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-11-19 08:09:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 1660 events. 213/1660 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9914 event pairs, 72 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 981. Up to 192 conditions per place. [2022-11-19 08:09:54,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 4500 [2022-11-19 08:09:56,948 INFO L134 LiptonReduction]: Checked pairs total: 7590 [2022-11-19 08:09:56,948 INFO L136 LiptonReduction]: Total number of compositions: 87 [2022-11-19 08:09:56,949 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 40 transitions, 158 flow [2022-11-19 08:09:58,247 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31497 states, 29784 states have (on average 4.495165189363417) internal successors, (133884), 31496 states have internal predecessors, (133884), 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) [2022-11-19 08:09:58,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:58,249 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:58,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-19 08:09:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 31497 states, 29784 states have (on average 4.495165189363417) internal successors, (133884), 31496 states have internal predecessors, (133884), 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) [2022-11-19 08:09:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:09:58,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:58,307 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:09:58,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-19 08:09:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1172, now seen corresponding path program 1 times [2022-11-19 08:09:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886819882] [2022-11-19 08:09:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:58,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:58,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:58,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886819882] [2022-11-19 08:09:58,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886819882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:58,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:58,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:09:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297000268] [2022-11-19 08:09:58,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:58,375 INFO L87 Difference]: Start difference. First operand has 31497 states, 29784 states have (on average 4.495165189363417) internal successors, (133884), 31496 states have internal predecessors, (133884), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:58,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:58,622 INFO L93 Difference]: Finished difference Result 4468 states and 14605 transitions. [2022-11-19 08:09:58,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:58,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:09:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:58,630 INFO L225 Difference]: With dead ends: 4468 [2022-11-19 08:09:58,630 INFO L226 Difference]: Without dead ends: 825 [2022-11-19 08:09:58,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:58,631 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:58,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-19 08:09:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2022-11-19 08:09:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 817 states have (on average 3.5238678090575277) internal successors, (2879), 824 states have internal predecessors, (2879), 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) [2022-11-19 08:09:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 2879 transitions. [2022-11-19 08:09:58,666 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 2879 transitions. Word has length 1 [2022-11-19 08:09:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:58,667 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 2879 transitions. [2022-11-19 08:09:58,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:09:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 2879 transitions. [2022-11-19 08:09:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:09:58,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:58,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:09:58,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-19 08:09:58,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-19 08:09:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1162128, now seen corresponding path program 1 times [2022-11-19 08:09:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:58,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579610793] [2022-11-19 08:09:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:58,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579610793] [2022-11-19 08:09:58,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579610793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:58,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:58,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:58,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809884917] [2022-11-19 08:09:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:58,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:58,702 INFO L87 Difference]: Start difference. First operand 825 states and 2879 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:58,746 INFO L93 Difference]: Finished difference Result 823 states and 2877 transitions. [2022-11-19 08:09:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:58,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:09:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:58,754 INFO L225 Difference]: With dead ends: 823 [2022-11-19 08:09:58,754 INFO L226 Difference]: Without dead ends: 823 [2022-11-19 08:09:58,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:09:58,756 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:58,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:09:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-19 08:09:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2022-11-19 08:09:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 816 states have (on average 3.525735294117647) internal successors, (2877), 822 states have internal predecessors, (2877), 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) [2022-11-19 08:09:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2877 transitions. [2022-11-19 08:09:58,791 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2877 transitions. Word has length 3 [2022-11-19 08:09:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:58,792 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 2877 transitions. [2022-11-19 08:09:58,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:09:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2877 transitions. [2022-11-19 08:09:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:09:58,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:58,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:58,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-19 08:09:58,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-19 08:09:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash 731957856, now seen corresponding path program 1 times [2022-11-19 08:09:58,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:58,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558423606] [2022-11-19 08:09:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:58,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:58,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558423606] [2022-11-19 08:09:58,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558423606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:58,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640716585] [2022-11-19 08:09:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:58,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:58,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:58,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:09:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:59,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:59,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:09:59,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:09:59,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640716585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:59,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:09:59,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:09:59,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860468063] [2022-11-19 08:09:59,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:59,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:09:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:59,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:09:59,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:59,123 INFO L87 Difference]: Start difference. First operand 823 states and 2877 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:59,211 INFO L93 Difference]: Finished difference Result 937 states and 3150 transitions. [2022-11-19 08:09:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:09:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:09:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:59,221 INFO L225 Difference]: With dead ends: 937 [2022-11-19 08:09:59,230 INFO L226 Difference]: Without dead ends: 931 [2022-11-19 08:09:59,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:09:59,231 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:59,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-19 08:09:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2022-11-19 08:09:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 924 states have (on average 3.4025974025974026) internal successors, (3144), 930 states have internal predecessors, (3144), 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) [2022-11-19 08:09:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 3144 transitions. [2022-11-19 08:09:59,307 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 3144 transitions. Word has length 7 [2022-11-19 08:09:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:59,308 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 3144 transitions. [2022-11-19 08:09:59,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:09:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 3144 transitions. [2022-11-19 08:09:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:09:59,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:59,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:59,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:09:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-19 08:09:59,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-19 08:09:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1215863039, now seen corresponding path program 1 times [2022-11-19 08:09:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:59,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120030066] [2022-11-19 08:09:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:59,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:59,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120030066] [2022-11-19 08:09:59,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120030066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:09:59,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707954320] [2022-11-19 08:09:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:59,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:09:59,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:59,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:09:59,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 08:09:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:59,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:09:59,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:09:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:59,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:09:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:09:59,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707954320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:09:59,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222148717] [2022-11-19 08:09:59,849 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:09:59,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:09:59,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-19 08:09:59,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771731360] [2022-11-19 08:09:59,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:09:59,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:09:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:59,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:09:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:09:59,853 INFO L87 Difference]: Start difference. First operand 931 states and 3144 transitions. 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) [2022-11-19 08:09:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:59,929 INFO L93 Difference]: Finished difference Result 898 states and 3083 transitions. [2022-11-19 08:09:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:09:59,935 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 8 [2022-11-19 08:09:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:59,944 INFO L225 Difference]: With dead ends: 898 [2022-11-19 08:09:59,944 INFO L226 Difference]: Without dead ends: 898 [2022-11-19 08:09:59,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:09:59,945 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:59,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-11-19 08:09:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2022-11-19 08:09:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 894 states have (on average 3.4485458612975393) internal successors, (3083), 897 states have internal predecessors, (3083), 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) [2022-11-19 08:09:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3083 transitions. [2022-11-19 08:09:59,996 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3083 transitions. Word has length 8 [2022-11-19 08:09:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:59,997 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 3083 transitions. [2022-11-19 08:09:59,997 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) [2022-11-19 08:09:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3083 transitions. [2022-11-19 08:09:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:09:59,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:59,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:00,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:00,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-19 08:10:00,205 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-19 08:10:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -203841463, now seen corresponding path program 1 times [2022-11-19 08:10:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:00,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978114699] [2022-11-19 08:10:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:00,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:00,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978114699] [2022-11-19 08:10:00,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978114699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:00,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051009446] [2022-11-19 08:10:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:00,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:00,369 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:00,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 08:10:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:00,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:10:00,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:00,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:00,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051009446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:00,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1483560889] [2022-11-19 08:10:00,629 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:10:00,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:00,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-19 08:10:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745537920] [2022-11-19 08:10:00,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:10:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:10:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:10:00,633 INFO L87 Difference]: Start difference. First operand 898 states and 3083 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-11-19 08:10:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:00,765 INFO L93 Difference]: Finished difference Result 571 states and 1983 transitions. [2022-11-19 08:10:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:10:00,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 20 [2022-11-19 08:10:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:00,772 INFO L225 Difference]: With dead ends: 571 [2022-11-19 08:10:00,772 INFO L226 Difference]: Without dead ends: 571 [2022-11-19 08:10:00,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:10:00,773 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 89 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:00,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 8 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-19 08:10:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-11-19 08:10:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 3.4789473684210526) internal successors, (1983), 570 states have internal predecessors, (1983), 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) [2022-11-19 08:10:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1983 transitions. [2022-11-19 08:10:00,799 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1983 transitions. Word has length 20 [2022-11-19 08:10:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:00,802 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 1983 transitions. [2022-11-19 08:10:00,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-11-19 08:10:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1983 transitions. [2022-11-19 08:10:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 08:10:00,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:00,806 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:00,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:01,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-19 08:10:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1597016054, now seen corresponding path program 1 times [2022-11-19 08:10:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:01,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144519333] [2022-11-19 08:10:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:01,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:10:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:01,097 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:10:01,104 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:10:01,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-19 08:10:01,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-19 08:10:01,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-19 08:10:01,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-19 08:10:01,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-19 08:10:01,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-19 08:10:01,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-19 08:10:01,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-19 08:10:01,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-19 08:10:01,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-19 08:10:01,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-19 08:10:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-19 08:10:01,108 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 08:10:01,109 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:10:01,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-11-19 08:10:01,138 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-11-19 08:10:01,140 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:10:01,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 117 transitions, 332 flow [2022-11-19 08:10:01,140 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 117 transitions, 332 flow [2022-11-19 08:10:01,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 332 flow [2022-11-19 08:10:01,839 INFO L130 PetriNetUnfolder]: 472/3222 cut-off events. [2022-11-19 08:10:01,840 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-11-19 08:10:01,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 3222 events. 472/3222 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 23708 event pairs, 201 based on Foata normal form. 0/2798 useless extension candidates. Maximal degree in co-relation 1878. Up to 448 conditions per place. [2022-11-19 08:10:01,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 5628 [2022-11-19 08:10:04,609 INFO L134 LiptonReduction]: Checked pairs total: 10966 [2022-11-19 08:10:04,610 INFO L136 LiptonReduction]: Total number of compositions: 92 [2022-11-19 08:10:04,611 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 44 transitions, 186 flow [2022-11-19 08:10:09,745 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 119076 states, 114191 states have (on average 4.983816587997302) internal successors, (569107), 119075 states have internal predecessors, (569107), 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) [2022-11-19 08:10:09,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:10:09,747 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:10:09,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-19 08:10:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 119076 states, 114191 states have (on average 4.983816587997302) internal successors, (569107), 119075 states have internal predecessors, (569107), 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) [2022-11-19 08:10:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:10:09,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:09,887 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:10:09,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:10:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1390, now seen corresponding path program 1 times [2022-11-19 08:10:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:09,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081127493] [2022-11-19 08:10:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:09,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:09,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081127493] [2022-11-19 08:10:09,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081127493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:09,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:10:09,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:10:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135588990] [2022-11-19 08:10:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:10:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:10:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:10:10,077 INFO L87 Difference]: Start difference. First operand has 119076 states, 114191 states have (on average 4.983816587997302) internal successors, (569107), 119075 states have internal predecessors, (569107), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:10:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:10,640 INFO L93 Difference]: Finished difference Result 12590 states and 46083 transitions. [2022-11-19 08:10:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:10:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:10:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:10,674 INFO L225 Difference]: With dead ends: 12590 [2022-11-19 08:10:10,687 INFO L226 Difference]: Without dead ends: 1657 [2022-11-19 08:10:10,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:10:10,688 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:10,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:10:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-11-19 08:10:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1657. [2022-11-19 08:10:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1648 states have (on average 3.999393203883495) internal successors, (6591), 1656 states have internal predecessors, (6591), 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) [2022-11-19 08:10:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 6591 transitions. [2022-11-19 08:10:10,821 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 6591 transitions. Word has length 1 [2022-11-19 08:10:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:10,822 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 6591 transitions. [2022-11-19 08:10:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:10:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 6591 transitions. [2022-11-19 08:10:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:10:10,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:10,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:10:10,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-19 08:10:10,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:10:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1376573, now seen corresponding path program 1 times [2022-11-19 08:10:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:10,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064663378] [2022-11-19 08:10:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:10,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064663378] [2022-11-19 08:10:10,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064663378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:10,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:10:10,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:10:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944124408] [2022-11-19 08:10:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:10:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:10:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:10:10,868 INFO L87 Difference]: Start difference. First operand 1657 states and 6591 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:10:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:10,934 INFO L93 Difference]: Finished difference Result 1655 states and 6589 transitions. [2022-11-19 08:10:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:10:10,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:10:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:10,949 INFO L225 Difference]: With dead ends: 1655 [2022-11-19 08:10:10,950 INFO L226 Difference]: Without dead ends: 1655 [2022-11-19 08:10:10,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:10:10,950 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:10,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:10:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2022-11-19 08:10:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1655. [2022-11-19 08:10:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1647 states have (on average 4.000607164541591) internal successors, (6589), 1654 states have internal predecessors, (6589), 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) [2022-11-19 08:10:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6589 transitions. [2022-11-19 08:10:11,019 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6589 transitions. Word has length 3 [2022-11-19 08:10:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:11,020 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 6589 transitions. [2022-11-19 08:10:11,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:10:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6589 transitions. [2022-11-19 08:10:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:10:11,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:11,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:11,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-19 08:10:11,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:10:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1277016244, now seen corresponding path program 1 times [2022-11-19 08:10:11,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:11,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309744553] [2022-11-19 08:10:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:11,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:11,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309744553] [2022-11-19 08:10:11,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309744553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540467198] [2022-11-19 08:10:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:11,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:11,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:11,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:11,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 08:10:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:11,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:10:11,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:10:11,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:10:11,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540467198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:11,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:10:11,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:10:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29544599] [2022-11-19 08:10:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:10:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:10:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:10:11,197 INFO L87 Difference]: Start difference. First operand 1655 states and 6589 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:10:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:11,253 INFO L93 Difference]: Finished difference Result 1895 states and 7295 transitions. [2022-11-19 08:10:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:10:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:10:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:11,269 INFO L225 Difference]: With dead ends: 1895 [2022-11-19 08:10:11,269 INFO L226 Difference]: Without dead ends: 1888 [2022-11-19 08:10:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:10:11,270 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:11,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:10:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-19 08:10:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2022-11-19 08:10:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1880 states have (on average 3.876595744680851) internal successors, (7288), 1887 states have internal predecessors, (7288), 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) [2022-11-19 08:10:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7288 transitions. [2022-11-19 08:10:11,645 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7288 transitions. Word has length 7 [2022-11-19 08:10:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:11,646 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 7288 transitions. [2022-11-19 08:10:11,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:10:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7288 transitions. [2022-11-19 08:10:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:10:11,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:11,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:11,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-19 08:10:11,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-19 08:10:11,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:10:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash 932804521, now seen corresponding path program 1 times [2022-11-19 08:10:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529069063] [2022-11-19 08:10:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:11,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:11,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529069063] [2022-11-19 08:10:11,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529069063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:11,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307307305] [2022-11-19 08:10:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:11,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:11,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:11,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:11,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 08:10:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:12,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:10:12,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:12,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:12,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307307305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1202730503] [2022-11-19 08:10:12,062 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:10:12,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:12,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-19 08:10:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847113936] [2022-11-19 08:10:12,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:10:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:10:12,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:10:12,066 INFO L87 Difference]: Start difference. First operand 1888 states and 7288 transitions. 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) [2022-11-19 08:10:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:12,162 INFO L93 Difference]: Finished difference Result 1855 states and 7227 transitions. [2022-11-19 08:10:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:10:12,164 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 8 [2022-11-19 08:10:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:12,179 INFO L225 Difference]: With dead ends: 1855 [2022-11-19 08:10:12,180 INFO L226 Difference]: Without dead ends: 1855 [2022-11-19 08:10:12,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:10:12,181 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:12,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2022-11-19 08:10:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1855. [2022-11-19 08:10:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1850 states have (on average 3.9064864864864863) internal successors, (7227), 1854 states have internal predecessors, (7227), 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) [2022-11-19 08:10:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7227 transitions. [2022-11-19 08:10:12,272 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7227 transitions. Word has length 8 [2022-11-19 08:10:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:12,272 INFO L495 AbstractCegarLoop]: Abstraction has 1855 states and 7227 transitions. [2022-11-19 08:10:12,273 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) [2022-11-19 08:10:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7227 transitions. [2022-11-19 08:10:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:10:12,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:12,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:12,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:12,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-19 08:10:12,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:10:12,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash -415946439, now seen corresponding path program 1 times [2022-11-19 08:10:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:12,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174312821] [2022-11-19 08:10:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:12,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:12,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:12,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174312821] [2022-11-19 08:10:12,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174312821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:12,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183947349] [2022-11-19 08:10:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:12,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:12,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:12,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:12,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 08:10:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:12,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:10:12,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:12,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183947349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693054568] [2022-11-19 08:10:12,871 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:10:12,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:12,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-19 08:10:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258925646] [2022-11-19 08:10:12,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:12,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:10:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:10:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:10:12,875 INFO L87 Difference]: Start difference. First operand 1855 states and 7227 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-11-19 08:10:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:13,002 INFO L93 Difference]: Finished difference Result 1147 states and 4543 transitions. [2022-11-19 08:10:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 08:10:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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 20 [2022-11-19 08:10:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:13,032 INFO L225 Difference]: With dead ends: 1147 [2022-11-19 08:10:13,032 INFO L226 Difference]: Without dead ends: 1147 [2022-11-19 08:10:13,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:10:13,033 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 119 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:13,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 10 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-11-19 08:10:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2022-11-19 08:10:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 3.9642233856893543) internal successors, (4543), 1146 states have internal predecessors, (4543), 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) [2022-11-19 08:10:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 4543 transitions. [2022-11-19 08:10:13,088 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 4543 transitions. Word has length 20 [2022-11-19 08:10:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:13,089 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 4543 transitions. [2022-11-19 08:10:13,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-11-19 08:10:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 4543 transitions. [2022-11-19 08:10:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:10:13,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:13,094 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:13,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:13,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:13,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:10:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1094178146, now seen corresponding path program 1 times [2022-11-19 08:10:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:13,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809404494] [2022-11-19 08:10:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:13,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:10:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:13,377 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:10:13,377 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:10:13,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-11-19 08:10:13,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-11-19 08:10:13,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-11-19 08:10:13,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-11-19 08:10:13,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-11-19 08:10:13,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-11-19 08:10:13,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-11-19 08:10:13,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-11-19 08:10:13,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-11-19 08:10:13,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-11-19 08:10:13,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-11-19 08:10:13,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-11-19 08:10:13,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-19 08:10:13,382 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 08:10:13,383 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:10:13,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-11-19 08:10:13,418 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-19 08:10:13,421 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:10:13,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 125 transitions, 370 flow [2022-11-19 08:10:13,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 125 transitions, 370 flow [2022-11-19 08:10:13,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 125 transitions, 370 flow [2022-11-19 08:10:15,029 INFO L130 PetriNetUnfolder]: 1051/6384 cut-off events. [2022-11-19 08:10:15,031 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2022-11-19 08:10:15,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 6384 events. 1051/6384 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 56281 event pairs, 522 based on Foata normal form. 0/5571 useless extension candidates. Maximal degree in co-relation 3704. Up to 1024 conditions per place. [2022-11-19 08:10:15,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2022-11-19 08:10:18,062 INFO L134 LiptonReduction]: Checked pairs total: 12281 [2022-11-19 08:10:18,062 INFO L136 LiptonReduction]: Total number of compositions: 99 [2022-11-19 08:10:18,063 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 216 flow [2022-11-19 08:10:40,722 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 455541 states, 441396 states have (on average 5.474734705343955) internal successors, (2416526), 455540 states have internal predecessors, (2416526), 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) [2022-11-19 08:10:40,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:10:40,730 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;@768eaf0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:10:40,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-19 08:10:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 455541 states, 441396 states have (on average 5.474734705343955) internal successors, (2416526), 455540 states have internal predecessors, (2416526), 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) [2022-11-19 08:10:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:10:41,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:41,379 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:10:41,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-19 08:10:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1621, now seen corresponding path program 1 times [2022-11-19 08:10:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:41,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998185506] [2022-11-19 08:10:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:41,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:41,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998185506] [2022-11-19 08:10:41,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998185506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:41,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:10:41,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:10:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9669826] [2022-11-19 08:10:41,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:10:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:10:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:10:42,016 INFO L87 Difference]: Start difference. First operand has 455541 states, 441396 states have (on average 5.474734705343955) internal successors, (2416526), 455540 states have internal predecessors, (2416526), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:10:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:43,964 INFO L93 Difference]: Finished difference Result 36124 states and 146321 transitions. [2022-11-19 08:10:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:10:43,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-19 08:10:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:44,006 INFO L225 Difference]: With dead ends: 36124 [2022-11-19 08:10:44,027 INFO L226 Difference]: Without dead ends: 3321 [2022-11-19 08:10:44,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:10:44,028 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 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 [2022-11-19 08:10:44,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2022-11-19 08:10:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 3321. [2022-11-19 08:10:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3311 states have (on average 4.484143763213531) internal successors, (14847), 3320 states have internal predecessors, (14847), 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) [2022-11-19 08:10:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 14847 transitions. [2022-11-19 08:10:44,304 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 14847 transitions. Word has length 1 [2022-11-19 08:10:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:44,305 INFO L495 AbstractCegarLoop]: Abstraction has 3321 states and 14847 transitions. [2022-11-19 08:10:44,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 08:10:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 14847 transitions. [2022-11-19 08:10:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:10:44,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:44,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:10:44,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-19 08:10:44,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-19 08:10:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1607771, now seen corresponding path program 1 times [2022-11-19 08:10:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957181667] [2022-11-19 08:10:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:44,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:44,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957181667] [2022-11-19 08:10:44,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957181667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:44,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:10:44,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:10:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624510781] [2022-11-19 08:10:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:44,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:10:44,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:10:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:10:44,355 INFO L87 Difference]: Start difference. First operand 3321 states and 14847 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:10:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:44,459 INFO L93 Difference]: Finished difference Result 3319 states and 14845 transitions. [2022-11-19 08:10:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:10:44,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 08:10:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:44,525 INFO L225 Difference]: With dead ends: 3319 [2022-11-19 08:10:44,525 INFO L226 Difference]: Without dead ends: 3319 [2022-11-19 08:10:44,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:10:44,526 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 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 [2022-11-19 08:10:44,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2022-11-19 08:10:44,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3319. [2022-11-19 08:10:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3310 states have (on average 4.484894259818731) internal successors, (14845), 3318 states have internal predecessors, (14845), 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) [2022-11-19 08:10:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 14845 transitions. [2022-11-19 08:10:44,789 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 14845 transitions. Word has length 3 [2022-11-19 08:10:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:44,790 INFO L495 AbstractCegarLoop]: Abstraction has 3319 states and 14845 transitions. [2022-11-19 08:10:44,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 08:10:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 14845 transitions. [2022-11-19 08:10:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:10:44,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:44,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-19 08:10:44,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-19 08:10:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash -154041, now seen corresponding path program 1 times [2022-11-19 08:10:44,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:44,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122249829] [2022-11-19 08:10:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:44,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:44,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122249829] [2022-11-19 08:10:44,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122249829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:44,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100481438] [2022-11-19 08:10:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:44,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:44,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:44,856 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:44,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 08:10:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:45,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:10:45,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:10:45,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:10:45,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100481438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:10:45,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:10:45,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-19 08:10:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110884287] [2022-11-19 08:10:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:10:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:10:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:10:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:10:45,124 INFO L87 Difference]: Start difference. First operand 3319 states and 14845 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:10:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:45,202 INFO L93 Difference]: Finished difference Result 3813 states and 16558 transitions. [2022-11-19 08:10:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:10:45,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-19 08:10:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:45,226 INFO L225 Difference]: With dead ends: 3813 [2022-11-19 08:10:45,226 INFO L226 Difference]: Without dead ends: 3805 [2022-11-19 08:10:45,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:10:45,227 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:45,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:10:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-11-19 08:10:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3805. [2022-11-19 08:10:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 3796 states have (on average 4.359852476290833) internal successors, (16550), 3804 states have internal predecessors, (16550), 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) [2022-11-19 08:10:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 16550 transitions. [2022-11-19 08:10:45,370 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 16550 transitions. Word has length 7 [2022-11-19 08:10:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:45,370 INFO L495 AbstractCegarLoop]: Abstraction has 3805 states and 16550 transitions. [2022-11-19 08:10:45,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-19 08:10:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 16550 transitions. [2022-11-19 08:10:45,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:10:45,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:45,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:45,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:45,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-19 08:10:45,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-19 08:10:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash -4768030, now seen corresponding path program 1 times [2022-11-19 08:10:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:45,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423913256] [2022-11-19 08:10:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:45,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:45,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423913256] [2022-11-19 08:10:45,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423913256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:45,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169291493] [2022-11-19 08:10:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:45,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:45,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:45,622 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:45,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 08:10:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:45,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:10:45,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:45,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:45,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169291493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:45,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1278044595] [2022-11-19 08:10:45,808 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:10:45,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:45,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 08:10:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677016814] [2022-11-19 08:10:45,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:45,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:10:45,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:45,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:10:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:10:45,816 INFO L87 Difference]: Start difference. First operand 3805 states and 16550 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:10:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:45,927 INFO L93 Difference]: Finished difference Result 3772 states and 16489 transitions. [2022-11-19 08:10:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:10:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 8 [2022-11-19 08:10:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:45,948 INFO L225 Difference]: With dead ends: 3772 [2022-11-19 08:10:45,949 INFO L226 Difference]: Without dead ends: 3772 [2022-11-19 08:10:45,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:10:45,958 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:45,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 9 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-11-19 08:10:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3772. [2022-11-19 08:10:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3766 states have (on average 4.37838555496548) internal successors, (16489), 3771 states have internal predecessors, (16489), 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) [2022-11-19 08:10:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 16489 transitions. [2022-11-19 08:10:46,100 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 16489 transitions. Word has length 8 [2022-11-19 08:10:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:46,100 INFO L495 AbstractCegarLoop]: Abstraction has 3772 states and 16489 transitions. [2022-11-19 08:10:46,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 08:10:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 16489 transitions. [2022-11-19 08:10:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:10:46,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:46,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:46,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-19 08:10:46,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-19 08:10:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1316300999, now seen corresponding path program 1 times [2022-11-19 08:10:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:46,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478425777] [2022-11-19 08:10:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:46,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478425777] [2022-11-19 08:10:46,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478425777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095816602] [2022-11-19 08:10:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:46,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:46,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:46,407 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:46,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 08:10:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:46,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:10:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:46,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:46,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095816602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957678723] [2022-11-19 08:10:46,700 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:10:46,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:46,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-19 08:10:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768777745] [2022-11-19 08:10:46,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 08:10:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 08:10:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:10:46,703 INFO L87 Difference]: Start difference. First operand 3772 states and 16489 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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) [2022-11-19 08:10:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:10:46,865 INFO L93 Difference]: Finished difference Result 2299 states and 10239 transitions. [2022-11-19 08:10:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 08:10:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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 20 [2022-11-19 08:10:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:10:46,879 INFO L225 Difference]: With dead ends: 2299 [2022-11-19 08:10:46,879 INFO L226 Difference]: Without dead ends: 2299 [2022-11-19 08:10:46,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:10:46,880 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 126 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:10:46,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 12 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:10:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2022-11-19 08:10:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2022-11-19 08:10:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 4.455613577023499) internal successors, (10239), 2298 states have internal predecessors, (10239), 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) [2022-11-19 08:10:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 10239 transitions. [2022-11-19 08:10:46,967 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 10239 transitions. Word has length 20 [2022-11-19 08:10:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:10:46,968 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 10239 transitions. [2022-11-19 08:10:46,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 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) [2022-11-19 08:10:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 10239 transitions. [2022-11-19 08:10:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 08:10:46,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:46,974 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:10:46,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 08:10:47,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04b51d45-2bd3-4f97-8735-c6d9ca323cea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:47,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-11-19 08:10:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash 656493294, now seen corresponding path program 1 times [2022-11-19 08:10:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:47,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201499386] [2022-11-19 08:10:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:47,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:10:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:47,237 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:10:47,237 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:10:47,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-19 08:10:47,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-11-19 08:10:47,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-11-19 08:10:47,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-11-19 08:10:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-11-19 08:10:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-11-19 08:10:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-11-19 08:10:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-11-19 08:10:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-11-19 08:10:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-11-19 08:10:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-11-19 08:10:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-11-19 08:10:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-11-19 08:10:47,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-19 08:10:47,248 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 08:10:47,248 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:10:47,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-11-19 08:10:47,279 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-19 08:10:47,281 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:10:47,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 133 transitions, 410 flow [2022-11-19 08:10:47,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 133 transitions, 410 flow [2022-11-19 08:10:47,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 133 transitions, 410 flow [2022-11-19 08:10:51,162 INFO L130 PetriNetUnfolder]: 2334/12810 cut-off events. [2022-11-19 08:10:51,163 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2022-11-19 08:10:51,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15187 conditions, 12810 events. 2334/12810 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 130430 event pairs, 1291 based on Foata normal form. 0/11224 useless extension candidates. Maximal degree in co-relation 7453. Up to 2304 conditions per place. [2022-11-19 08:10:51,384 INFO L119 LiptonReduction]: Number of co-enabled transitions 8208 [2022-11-19 08:10:54,537 INFO L134 LiptonReduction]: Checked pairs total: 17000 [2022-11-19 08:10:54,538 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-11-19 08:10:54,539 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 52 transitions, 248 flow