./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI --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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:58:02,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:58:02,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:58:03,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:58:03,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:58:03,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:58:03,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:58:03,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:58:03,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:58:03,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:58:03,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:58:03,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:58:03,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:58:03,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:58:03,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:58:03,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:58:03,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:58:03,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:58:03,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:58:03,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:58:03,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:58:03,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:58:03,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:58:03,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:58:03,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:58:03,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:58:03,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:58:03,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:58:03,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:58:03,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:58:03,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:58:03,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:58:03,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:58:03,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:58:03,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:58:03,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:58:03,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:58:03,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:58:03,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:58:03,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:58:03,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:58:03,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 03:58:03,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:58:03,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:58:03,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:58:03,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:58:03,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:58:03,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:58:03,113 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:58:03,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:58:03,114 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:58:03,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:58:03,115 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:58:03,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:58:03,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:58:03,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:58:03,116 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:58:03,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:58:03,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:58:03,116 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:58:03,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:58:03,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:58:03,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:58:03,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:58:03,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:58:03,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:58:03,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:58:03,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:58:03,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:58:03,120 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 03:58:03,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:58:03,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:58:03,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:58:03,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:58:03,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:58:03,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:58:03,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:58:03,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:58:03,122 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:58:03,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:58:03,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:58:03,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:58:03,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:58:03,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:58:03,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:58:03,123 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_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-11-03 03:58:03,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:58:03,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:58:03,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:58:03,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:58:03,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:58:03,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-03 03:58:03,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/data/b82acd611/7bed0e435f1e4676add30e4aae1a3627/FLAGdbe0e15cd [2022-11-03 03:58:04,188 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:58:04,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-03 03:58:04,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/data/b82acd611/7bed0e435f1e4676add30e4aae1a3627/FLAGdbe0e15cd [2022-11-03 03:58:04,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/data/b82acd611/7bed0e435f1e4676add30e4aae1a3627 [2022-11-03 03:58:04,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:58:04,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:58:04,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:58:04,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:58:04,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:58:04,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:04" (1/1) ... [2022-11-03 03:58:04,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b40583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:04, skipping insertion in model container [2022-11-03 03:58:04,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:04" (1/1) ... [2022-11-03 03:58:04,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:58:04,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:58:05,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-03 03:58:05,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:58:05,312 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:58:05,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-03 03:58:05,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:58:05,455 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:58:05,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05 WrapperNode [2022-11-03 03:58:05,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:58:05,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:58:05,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:58:05,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:58:05,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,555 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 337 [2022-11-03 03:58:05,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:58:05,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:58:05,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:58:05,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:58:05,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:58:05,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:58:05,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:58:05,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:58:05,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (1/1) ... [2022-11-03 03:58:05,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:58:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:58:05,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:58:05,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:58:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:58:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:58:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-03 03:58:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-03 03:58:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:58:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:58:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-03 03:58:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-03 03:58:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:58:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 03:58:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:58:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:58:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:58:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:58:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:58:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:58:05,774 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 03:58:05,951 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:58:05,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:58:06,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:58:06,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:58:06,655 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-03 03:58:06,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:06 BoogieIcfgContainer [2022-11-03 03:58:06,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:58:06,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:58:06,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:58:06,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:58:06,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:58:04" (1/3) ... [2022-11-03 03:58:06,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643b2591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:06, skipping insertion in model container [2022-11-03 03:58:06,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:05" (2/3) ... [2022-11-03 03:58:06,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643b2591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:06, skipping insertion in model container [2022-11-03 03:58:06,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:06" (3/3) ... [2022-11-03 03:58:06,667 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-11-03 03:58:06,676 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 03:58:06,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:58:06,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-03 03:58:06,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 03:58:06,850 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-03 03:58:06,915 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 03:58:06,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 369 transitions, 760 flow [2022-11-03 03:58:06,937 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 369 transitions, 760 flow [2022-11-03 03:58:06,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 760 flow [2022-11-03 03:58:07,274 INFO L130 PetriNetUnfolder]: 54/658 cut-off events. [2022-11-03 03:58:07,274 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-03 03:58:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 658 events. 54/658 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3052 event pairs, 0 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2022-11-03 03:58:07,319 INFO L118 LiptonReduction]: Number of co-enabled transitions 47560 [2022-11-03 03:58:52,627 WARN L234 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-03 03:58:57,688 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-03 03:59:06,098 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-03 03:59:10,030 INFO L133 LiptonReduction]: Checked pairs total: 445762 [2022-11-03 03:59:10,031 INFO L135 LiptonReduction]: Total number of compositions: 266 [2022-11-03 03:59:10,040 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 155 places, 169 transitions, 360 flow [2022-11-03 03:59:12,707 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73977 states, 73530 states have (on average 3.0958656330749355) internal successors, (227639), 73976 states have internal predecessors, (227639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:12,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:12,744 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;@7cc48459, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:12,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-03 03:59:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 73977 states, 73530 states have (on average 3.0958656330749355) internal successors, (227639), 73976 states have internal predecessors, (227639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 03:59:12,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:12,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 03:59:12,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 42713, now seen corresponding path program 1 times [2022-11-03 03:59:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:12,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561884553] [2022-11-03 03:59:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:59:13,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:13,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561884553] [2022-11-03 03:59:13,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561884553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:13,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:13,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 03:59:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143212171] [2022-11-03 03:59:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:13,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:59:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:59:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:59:13,285 INFO L87 Difference]: Start difference. First operand has 73977 states, 73530 states have (on average 3.0958656330749355) internal successors, (227639), 73976 states have internal predecessors, (227639), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:14,813 INFO L93 Difference]: Finished difference Result 73974 states and 215180 transitions. [2022-11-03 03:59:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:59:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-03 03:59:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:15,575 INFO L225 Difference]: With dead ends: 73974 [2022-11-03 03:59:15,575 INFO L226 Difference]: Without dead ends: 73932 [2022-11-03 03:59:15,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:59:15,599 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:15,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:59:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73932 states. [2022-11-03 03:59:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73932 to 73932. [2022-11-03 03:59:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73932 states, 73493 states have (on average 2.926373940375274) internal successors, (215068), 73931 states have internal predecessors, (215068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73932 states to 73932 states and 215068 transitions. [2022-11-03 03:59:19,466 INFO L78 Accepts]: Start accepts. Automaton has 73932 states and 215068 transitions. Word has length 2 [2022-11-03 03:59:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:19,467 INFO L495 AbstractCegarLoop]: Abstraction has 73932 states and 215068 transitions. [2022-11-03 03:59:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 73932 states and 215068 transitions. [2022-11-03 03:59:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:59:19,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:19,468 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 03:59:19,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:59:19,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:19,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2016848205, now seen corresponding path program 1 times [2022-11-03 03:59:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:19,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948784372] [2022-11-03 03:59:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:19,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:19,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:19,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948784372] [2022-11-03 03:59:19,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948784372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:19,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:19,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:59:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915932988] [2022-11-03 03:59:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:59:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:59:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:59:19,653 INFO L87 Difference]: Start difference. First operand 73932 states and 215068 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2022-11-03 03:59:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:20,615 INFO L93 Difference]: Finished difference Result 73933 states and 215069 transitions. [2022-11-03 03:59:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:59:20,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 7 [2022-11-03 03:59:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:20,843 INFO L225 Difference]: With dead ends: 73933 [2022-11-03 03:59:20,843 INFO L226 Difference]: Without dead ends: 73933 [2022-11-03 03:59:20,843 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 [2022-11-03 03:59:20,844 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:20,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:59:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73933 states. [2022-11-03 03:59:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73933 to 73933. [2022-11-03 03:59:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73933 states, 73494 states have (on average 2.9263477290663182) internal successors, (215069), 73932 states have internal predecessors, (215069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73933 states to 73933 states and 215069 transitions. [2022-11-03 03:59:23,706 INFO L78 Accepts]: Start accepts. Automaton has 73933 states and 215069 transitions. Word has length 7 [2022-11-03 03:59:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:23,707 INFO L495 AbstractCegarLoop]: Abstraction has 73933 states and 215069 transitions. [2022-11-03 03:59:23,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2022-11-03 03:59:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 73933 states and 215069 transitions. [2022-11-03 03:59:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:59:23,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:23,708 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:23,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:59:23,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2087696674, now seen corresponding path program 1 times [2022-11-03 03:59:23,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:23,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177428499] [2022-11-03 03:59:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:23,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177428499] [2022-11-03 03:59:23,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177428499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091606933] [2022-11-03 03:59:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:23,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:23,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:23,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:59:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:24,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:59:24,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:24,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:24,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091606933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:24,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2054276867] [2022-11-03 03:59:24,202 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) [2022-11-03 03:59:24,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:24,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 03:59:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571773311] [2022-11-03 03:59:24,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:59:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:59:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:59:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:59:24,214 INFO L87 Difference]: Start difference. First operand 73933 states and 215069 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:25,106 INFO L93 Difference]: Finished difference Result 73936 states and 215072 transitions. [2022-11-03 03:59:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:59:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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 [2022-11-03 03:59:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:25,361 INFO L225 Difference]: With dead ends: 73936 [2022-11-03 03:59:25,361 INFO L226 Difference]: Without dead ends: 73936 [2022-11-03 03:59:25,361 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 [2022-11-03 03:59:25,362 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:25,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:59:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73936 states. [2022-11-03 03:59:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73936 to 73936. [2022-11-03 03:59:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73936 states, 73497 states have (on average 2.9262690994190237) internal successors, (215072), 73935 states have internal predecessors, (215072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:27,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73936 states to 73936 states and 215072 transitions. [2022-11-03 03:59:27,791 INFO L78 Accepts]: Start accepts. Automaton has 73936 states and 215072 transitions. Word has length 8 [2022-11-03 03:59:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:27,791 INFO L495 AbstractCegarLoop]: Abstraction has 73936 states and 215072 transitions. [2022-11-03 03:59:27,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 73936 states and 215072 transitions. [2022-11-03 03:59:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:59:27,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:27,792 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-03 03:59:27,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:27,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:27,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1350174093, now seen corresponding path program 2 times [2022-11-03 03:59:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:27,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155861203] [2022-11-03 03:59:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:28,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155861203] [2022-11-03 03:59:28,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155861203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886666577] [2022-11-03 03:59:28,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:59:28,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:28,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:28,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:59:31,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 03:59:31,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:59:31,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:59:31,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:31,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:31,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886666577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:31,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880902956] [2022-11-03 03:59:31,265 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) [2022-11-03 03:59:31,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:31,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 03:59:31,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960714419] [2022-11-03 03:59:31,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:59:31,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:59:31,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:59:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:59:31,276 INFO L87 Difference]: Start difference. First operand 73936 states and 215072 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:33,103 INFO L93 Difference]: Finished difference Result 73942 states and 215078 transitions. [2022-11-03 03:59:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:59:33,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 03:59:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:33,323 INFO L225 Difference]: With dead ends: 73942 [2022-11-03 03:59:33,323 INFO L226 Difference]: Without dead ends: 73942 [2022-11-03 03:59:33,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:59:33,324 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:33,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:59:33,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73942 states. [2022-11-03 03:59:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73942 to 73942. [2022-11-03 03:59:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73942 states, 73503 states have (on average 2.926111859379889) internal successors, (215078), 73941 states have internal predecessors, (215078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73942 states to 73942 states and 215078 transitions. [2022-11-03 03:59:35,601 INFO L78 Accepts]: Start accepts. Automaton has 73942 states and 215078 transitions. Word has length 11 [2022-11-03 03:59:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:35,601 INFO L495 AbstractCegarLoop]: Abstraction has 73942 states and 215078 transitions. [2022-11-03 03:59:35,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 73942 states and 215078 transitions. [2022-11-03 03:59:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:59:35,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:35,602 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-03 03:59:35,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:35,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash -153408493, now seen corresponding path program 3 times [2022-11-03 03:59:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:35,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248361883] [2022-11-03 03:59:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:36,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248361883] [2022-11-03 03:59:36,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248361883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856233504] [2022-11-03 03:59:36,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:59:36,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:36,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:36,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:59:37,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:59:37,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:59:37,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:59:37,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:37,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856233504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2096964537] [2022-11-03 03:59:37,390 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) [2022-11-03 03:59:37,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:37,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-03 03:59:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147161940] [2022-11-03 03:59:37,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:59:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 03:59:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 03:59:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:59:37,392 INFO L87 Difference]: Start difference. First operand 73942 states and 215078 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:39,241 INFO L93 Difference]: Finished difference Result 73954 states and 215090 transitions. [2022-11-03 03:59:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:59:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 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 17 [2022-11-03 03:59:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:40,091 INFO L225 Difference]: With dead ends: 73954 [2022-11-03 03:59:40,091 INFO L226 Difference]: Without dead ends: 73954 [2022-11-03 03:59:40,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-03 03:59:40,092 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:40,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 03:59:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73954 states. [2022-11-03 03:59:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73954 to 73954. [2022-11-03 03:59:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73954 states, 73515 states have (on average 2.925797456301435) internal successors, (215090), 73953 states have internal predecessors, (215090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73954 states to 73954 states and 215090 transitions. [2022-11-03 03:59:42,032 INFO L78 Accepts]: Start accepts. Automaton has 73954 states and 215090 transitions. Word has length 17 [2022-11-03 03:59:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:42,033 INFO L495 AbstractCegarLoop]: Abstraction has 73954 states and 215090 transitions. [2022-11-03 03:59:42,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 73954 states and 215090 transitions. [2022-11-03 03:59:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:59:42,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:42,034 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2022-11-03 03:59:42,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:42,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash -509319341, now seen corresponding path program 4 times [2022-11-03 03:59:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:42,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657497115] [2022-11-03 03:59:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:44,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:44,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657497115] [2022-11-03 03:59:44,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657497115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:44,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284567828] [2022-11-03 03:59:44,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 03:59:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:44,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:44,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:59:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:45,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:59:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:45,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:46,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284567828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:46,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1589575536] [2022-11-03 03:59:46,511 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) [2022-11-03 03:59:46,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:46,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-03 03:59:46,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123214147] [2022-11-03 03:59:46,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:59:46,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 03:59:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 03:59:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 03:59:46,514 INFO L87 Difference]: Start difference. First operand 73954 states and 215090 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:50,447 INFO L93 Difference]: Finished difference Result 73978 states and 215114 transitions. [2022-11-03 03:59:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 03:59:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 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 29 [2022-11-03 03:59:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:50,683 INFO L225 Difference]: With dead ends: 73978 [2022-11-03 03:59:50,683 INFO L226 Difference]: Without dead ends: 73978 [2022-11-03 03:59:50,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 03:59:50,685 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:50,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 744 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:59:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73978 states. [2022-11-03 03:59:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73978 to 73978. [2022-11-03 03:59:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73978 states, 73539 states have (on average 2.925168957967881) internal successors, (215114), 73977 states have internal predecessors, (215114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73978 states to 73978 states and 215114 transitions. [2022-11-03 03:59:52,664 INFO L78 Accepts]: Start accepts. Automaton has 73978 states and 215114 transitions. Word has length 29 [2022-11-03 03:59:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:52,664 INFO L495 AbstractCegarLoop]: Abstraction has 73978 states and 215114 transitions. [2022-11-03 03:59:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:59:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 73978 states and 215114 transitions. [2022-11-03 03:59:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 03:59:52,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:52,666 INFO L195 NwaCegarLoop]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2022-11-03 03:59:52,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:52,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:52,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-11-03 03:59:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1204436435, now seen corresponding path program 5 times [2022-11-03 03:59:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:52,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593382237] [2022-11-03 03:59:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:59,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593382237] [2022-11-03 03:59:59,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593382237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816399954] [2022-11-03 03:59:59,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:59:59,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:59,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:59,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:59,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e01933-88a0-49bd-8ee7-fa5fe9c3c616/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process