./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur --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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- 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-38b53e6 [2022-11-26 00:09:25,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:09:25,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:09:25,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:09:25,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:09:25,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:09:25,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:09:25,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:09:25,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:09:25,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:09:25,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:09:25,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:09:25,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:09:25,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:09:25,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:09:25,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:09:25,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:09:25,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:09:25,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:09:25,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:09:25,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:09:25,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:09:25,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:09:25,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:09:25,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:09:25,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:09:25,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:09:25,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:09:25,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:09:25,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:09:25,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:09:25,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:09:25,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:09:25,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:09:25,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:09:25,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:09:25,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:09:25,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:09:25,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:09:25,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:09:25,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:09:25,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-26 00:09:25,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:09:25,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:09:25,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:09:25,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:09:25,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:09:25,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:09:25,679 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:09:25,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:09:25,680 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:09:25,680 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:09:25,680 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:09:25,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:09:25,681 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:09:25,681 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:09:25,681 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:09:25,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:09:25,682 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:09:25,682 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:09:25,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:09:25,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:09:25,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:09:25,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:09:25,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:09:25,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:09:25,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:09:25,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:09:25,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:09:25,685 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-26 00:09:25,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:09:25,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:09:25,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:09:25,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:09:25,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:09:25,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:09:25,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:09:25,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:09:25,687 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:09:25,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:09:25,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:09:25,688 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:09:25,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:09:25,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:09:25,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:09:25,689 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_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2022-11-26 00:09:25,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:09:25,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:09:25,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:09:25,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:09:26,001 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:09:26,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-26 00:09:29,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:09:29,404 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:09:29,405 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-26 00:09:29,414 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/data/de89bc45f/1e359e72456f4e9db3ea6640211d8dc6/FLAG69fb6adca [2022-11-26 00:09:29,431 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/data/de89bc45f/1e359e72456f4e9db3ea6640211d8dc6 [2022-11-26 00:09:29,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:09:29,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:09:29,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:09:29,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:09:29,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:09:29,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3c56ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29, skipping insertion in model container [2022-11-26 00:09:29,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:09:29,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:09:29,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:29,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:29,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:29,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:29,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:29,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:29,721 WARN L237 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_b913907f-913f-4dcc-a882-e7b535711a1b/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-26 00:09:29,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:09:29,738 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:09:29,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:29,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:29,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:29,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:29,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:29,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:29,778 WARN L237 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_b913907f-913f-4dcc-a882-e7b535711a1b/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-26 00:09:29,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:09:29,801 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:09:29,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29 WrapperNode [2022-11-26 00:09:29,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:09:29,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:09:29,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:09:29,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:09:29,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,868 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 214 [2022-11-26 00:09:29,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:09:29,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:09:29,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:09:29,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:09:29,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:09:29,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:09:29,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:09:29,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:09:29,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (1/1) ... [2022-11-26 00:09:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:09:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:09:29,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:09:29,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:09:30,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:09:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:09:30,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:09:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:09:30,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 00:09:30,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 00:09:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 00:09:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 00:09:30,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-26 00:09:30,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-26 00:09:30,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:09:30,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 00:09:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 00:09:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:09:30,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:09:30,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:09:30,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:09:30,043 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:09:30,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:09:30,199 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:09:31,048 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:09:31,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:09:31,196 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-26 00:09:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:09:31 BoogieIcfgContainer [2022-11-26 00:09:31,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:09:31,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:09:31,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:09:31,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:09:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:09:29" (1/3) ... [2022-11-26 00:09:31,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c704c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:09:31, skipping insertion in model container [2022-11-26 00:09:31,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:29" (2/3) ... [2022-11-26 00:09:31,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c704c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:09:31, skipping insertion in model container [2022-11-26 00:09:31,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:09:31" (3/3) ... [2022-11-26 00:09:31,211 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-11-26 00:09:31,223 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:09:31,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:09:31,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-11-26 00:09:31,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:09:31,357 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-26 00:09:31,406 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:09:31,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 362 transitions, 748 flow [2022-11-26 00:09:31,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 362 transitions, 748 flow [2022-11-26 00:09:31,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 362 transitions, 748 flow [2022-11-26 00:09:31,637 INFO L130 PetriNetUnfolder]: 20/359 cut-off events. [2022-11-26 00:09:31,637 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-26 00:09:31,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 359 events. 20/359 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 437 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 284. Up to 3 conditions per place. [2022-11-26 00:09:31,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 9382 [2022-11-26 00:11:46,319 INFO L134 LiptonReduction]: Checked pairs total: 61515 [2022-11-26 00:11:46,320 INFO L136 LiptonReduction]: Total number of compositions: 428 [2022-11-26 00:11:46,332 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 99 transitions, 222 flow [2022-11-26 00:11:47,883 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27076 states, 25734 states have (on average 4.32983601461102) internal successors, (111424), 27075 states have internal predecessors, (111424), 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) [2022-11-26 00:11:47,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:11:47,962 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;@775fd656, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:11:47,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-11-26 00:11:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 27076 states, 25734 states have (on average 4.32983601461102) internal successors, (111424), 27075 states have internal predecessors, (111424), 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) [2022-11-26 00:11:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-26 00:11:48,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:48,063 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-26 00:11:48,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:11:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1452, now seen corresponding path program 1 times [2022-11-26 00:11:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233436980] [2022-11-26 00:11:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:48,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:48,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233436980] [2022-11-26 00:11:48,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233436980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:48,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:48,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-26 00:11:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84583648] [2022-11-26 00:11:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:11:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:11:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:11:48,442 INFO L87 Difference]: Start difference. First operand has 27076 states, 25734 states have (on average 4.32983601461102) internal successors, (111424), 27075 states have internal predecessors, (111424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:48,858 INFO L93 Difference]: Finished difference Result 3066 states and 12103 transitions. [2022-11-26 00:11:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:11:48,862 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-26 00:11:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:48,923 INFO L225 Difference]: With dead ends: 3066 [2022-11-26 00:11:48,923 INFO L226 Difference]: Without dead ends: 3035 [2022-11-26 00:11:48,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:11:48,930 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:48,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-11-26 00:11:49,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3035. [2022-11-26 00:11:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3029 states have (on average 3.966985803895675) internal successors, (12016), 3034 states have internal predecessors, (12016), 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) [2022-11-26 00:11:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 12016 transitions. [2022-11-26 00:11:49,340 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 12016 transitions. Word has length 1 [2022-11-26 00:11:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:49,340 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 12016 transitions. [2022-11-26 00:11:49,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 12016 transitions. [2022-11-26 00:11:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:11:49,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:49,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:49,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:11:49,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:11:49,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash 733088970, now seen corresponding path program 1 times [2022-11-26 00:11:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:49,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195845099] [2022-11-26 00:11:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:50,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:50,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195845099] [2022-11-26 00:11:50,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195845099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:50,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:50,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:11:50,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670516258] [2022-11-26 00:11:50,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:50,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:50,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:50,164 INFO L87 Difference]: Start difference. First operand 3035 states and 12016 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-26 00:11:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:50,747 INFO L93 Difference]: Finished difference Result 3861 states and 15023 transitions. [2022-11-26 00:11:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:11:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-26 00:11:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:50,827 INFO L225 Difference]: With dead ends: 3861 [2022-11-26 00:11:50,828 INFO L226 Difference]: Without dead ends: 3861 [2022-11-26 00:11:50,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:50,829 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 92 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:50,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 101 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:11:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-11-26 00:11:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3551. [2022-11-26 00:11:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 3545 states have (on average 3.9675599435825104) internal successors, (14065), 3550 states have internal predecessors, (14065), 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) [2022-11-26 00:11:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 14065 transitions. [2022-11-26 00:11:51,095 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 14065 transitions. Word has length 13 [2022-11-26 00:11:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:51,096 INFO L495 AbstractCegarLoop]: Abstraction has 3551 states and 14065 transitions. [2022-11-26 00:11:51,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-26 00:11:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 14065 transitions. [2022-11-26 00:11:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:11:51,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:51,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:51,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:11:51,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:11:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash 28749605, now seen corresponding path program 1 times [2022-11-26 00:11:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:51,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045129919] [2022-11-26 00:11:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:52,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:52,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045129919] [2022-11-26 00:11:52,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045129919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:52,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:52,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:11:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791661073] [2022-11-26 00:11:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:52,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:11:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:11:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:52,027 INFO L87 Difference]: Start difference. First operand 3551 states and 14065 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-26 00:11:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:53,196 INFO L93 Difference]: Finished difference Result 5056 states and 19981 transitions. [2022-11-26 00:11:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:11:53,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-11-26 00:11:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:53,243 INFO L225 Difference]: With dead ends: 5056 [2022-11-26 00:11:53,244 INFO L226 Difference]: Without dead ends: 5056 [2022-11-26 00:11:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:53,245 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 80 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:53,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 72 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:11:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-11-26 00:11:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 4651. [2022-11-26 00:11:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4651 states, 4645 states have (on average 4.022604951560818) internal successors, (18685), 4650 states have internal predecessors, (18685), 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) [2022-11-26 00:11:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 18685 transitions. [2022-11-26 00:11:53,494 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 18685 transitions. Word has length 15 [2022-11-26 00:11:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 4651 states and 18685 transitions. [2022-11-26 00:11:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-26 00:11:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 18685 transitions. [2022-11-26 00:11:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:11:53,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:53,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:11:53,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:11:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1089886458, now seen corresponding path program 1 times [2022-11-26 00:11:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:53,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278033609] [2022-11-26 00:11:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:11:54,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:54,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278033609] [2022-11-26 00:11:54,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278033609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:54,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:54,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:11:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242360992] [2022-11-26 00:11:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:54,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:11:54,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:11:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:54,030 INFO L87 Difference]: Start difference. First operand 4651 states and 18685 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:55,761 INFO L93 Difference]: Finished difference Result 6658 states and 26882 transitions. [2022-11-26 00:11:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:11:55,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-26 00:11:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:55,866 INFO L225 Difference]: With dead ends: 6658 [2022-11-26 00:11:55,866 INFO L226 Difference]: Without dead ends: 6658 [2022-11-26 00:11:55,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:55,868 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:55,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 69 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-26 00:11:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2022-11-26 00:11:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 5356. [2022-11-26 00:11:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5350 states have (on average 4.031588785046729) internal successors, (21569), 5355 states have internal predecessors, (21569), 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) [2022-11-26 00:11:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 21569 transitions. [2022-11-26 00:11:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 21569 transitions. Word has length 16 [2022-11-26 00:11:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:56,152 INFO L495 AbstractCegarLoop]: Abstraction has 5356 states and 21569 transitions. [2022-11-26 00:11:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 21569 transitions. [2022-11-26 00:11:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:11:56,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:56,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:11:56,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:11:56,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1792962464, now seen corresponding path program 1 times [2022-11-26 00:11:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:56,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348085050] [2022-11-26 00:11:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:56,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:56,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:56,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348085050] [2022-11-26 00:11:56,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348085050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:56,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:56,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:11:56,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332646066] [2022-11-26 00:11:56,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:56,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:56,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:56,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:56,418 INFO L87 Difference]: Start difference. First operand 5356 states and 21569 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2022-11-26 00:11:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:56,891 INFO L93 Difference]: Finished difference Result 5421 states and 21335 transitions. [2022-11-26 00:11:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:11:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 18 [2022-11-26 00:11:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:56,931 INFO L225 Difference]: With dead ends: 5421 [2022-11-26 00:11:56,931 INFO L226 Difference]: Without dead ends: 5421 [2022-11-26 00:11:56,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:56,933 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 75 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:56,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 109 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:11:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5421 states. [2022-11-26 00:11:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5421 to 5349. [2022-11-26 00:11:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5349 states, 5343 states have (on average 3.964813775032753) internal successors, (21184), 5348 states have internal predecessors, (21184), 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) [2022-11-26 00:11:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5349 states to 5349 states and 21184 transitions. [2022-11-26 00:11:57,267 INFO L78 Accepts]: Start accepts. Automaton has 5349 states and 21184 transitions. Word has length 18 [2022-11-26 00:11:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:57,268 INFO L495 AbstractCegarLoop]: Abstraction has 5349 states and 21184 transitions. [2022-11-26 00:11:57,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2022-11-26 00:11:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5349 states and 21184 transitions. [2022-11-26 00:11:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:11:57,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:57,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:57,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:11:57,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:11:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1661325551, now seen corresponding path program 1 times [2022-11-26 00:11:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:57,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216722451] [2022-11-26 00:11:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:57,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:11:59,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:59,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216722451] [2022-11-26 00:11:59,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216722451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:59,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:59,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:11:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651840998] [2022-11-26 00:11:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:59,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:11:59,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:11:59,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:11:59,456 INFO L87 Difference]: Start difference. First operand 5349 states and 21184 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:00,741 INFO L93 Difference]: Finished difference Result 14267 states and 56792 transitions. [2022-11-26 00:12:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:12:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-26 00:12:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:00,826 INFO L225 Difference]: With dead ends: 14267 [2022-11-26 00:12:00,826 INFO L226 Difference]: Without dead ends: 14267 [2022-11-26 00:12:00,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:12:00,828 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 370 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:00,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:12:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14267 states. [2022-11-26 00:12:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 6490. [2022-11-26 00:12:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6490 states, 6484 states have (on average 4.069555829734732) internal successors, (26387), 6489 states have internal predecessors, (26387), 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) [2022-11-26 00:12:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6490 states to 6490 states and 26387 transitions. [2022-11-26 00:12:01,232 INFO L78 Accepts]: Start accepts. Automaton has 6490 states and 26387 transitions. Word has length 21 [2022-11-26 00:12:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:01,232 INFO L495 AbstractCegarLoop]: Abstraction has 6490 states and 26387 transitions. [2022-11-26 00:12:01,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6490 states and 26387 transitions. [2022-11-26 00:12:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:12:01,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:01,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:01,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:12:01,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:12:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2036737308, now seen corresponding path program 1 times [2022-11-26 00:12:01,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:01,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301658234] [2022-11-26 00:12:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:12:02,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301658234] [2022-11-26 00:12:02,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301658234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:02,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:02,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:12:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897752318] [2022-11-26 00:12:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:12:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:12:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:12:02,933 INFO L87 Difference]: Start difference. First operand 6490 states and 26387 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:04,752 INFO L93 Difference]: Finished difference Result 6105 states and 24725 transitions. [2022-11-26 00:12:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:12:04,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-26 00:12:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:04,798 INFO L225 Difference]: With dead ends: 6105 [2022-11-26 00:12:04,798 INFO L226 Difference]: Without dead ends: 6105 [2022-11-26 00:12:04,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:12:04,800 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 259 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:04,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 84 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:12:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-11-26 00:12:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 4565. [2022-11-26 00:12:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4562 states have (on average 3.9625164401578257) internal successors, (18077), 4564 states have internal predecessors, (18077), 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) [2022-11-26 00:12:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 18077 transitions. [2022-11-26 00:12:05,066 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 18077 transitions. Word has length 21 [2022-11-26 00:12:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:05,068 INFO L495 AbstractCegarLoop]: Abstraction has 4565 states and 18077 transitions. [2022-11-26 00:12:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 18077 transitions. [2022-11-26 00:12:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:12:05,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:05,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:05,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:12:05,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:12:05,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1365641191, now seen corresponding path program 2 times [2022-11-26 00:12:05,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:05,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978821838] [2022-11-26 00:12:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:12:06,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:06,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978821838] [2022-11-26 00:12:06,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978821838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:06,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:06,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:12:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261906211] [2022-11-26 00:12:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:06,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:12:06,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:12:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:12:06,968 INFO L87 Difference]: Start difference. First operand 4565 states and 18077 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:08,835 INFO L93 Difference]: Finished difference Result 11314 states and 44950 transitions. [2022-11-26 00:12:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:12:08,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-26 00:12:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:08,918 INFO L225 Difference]: With dead ends: 11314 [2022-11-26 00:12:08,919 INFO L226 Difference]: Without dead ends: 11314 [2022-11-26 00:12:08,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:12:08,922 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 282 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:08,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 113 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:12:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11314 states. [2022-11-26 00:12:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11314 to 4639. [2022-11-26 00:12:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 4636 states have (on average 3.9710957722174287) internal successors, (18410), 4638 states have internal predecessors, (18410), 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) [2022-11-26 00:12:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 18410 transitions. [2022-11-26 00:12:09,251 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 18410 transitions. Word has length 21 [2022-11-26 00:12:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:09,251 INFO L495 AbstractCegarLoop]: Abstraction has 4639 states and 18410 transitions. [2022-11-26 00:12:09,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 18410 transitions. [2022-11-26 00:12:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-26 00:12:09,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:09,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:09,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:12:09,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:12:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1222210352, now seen corresponding path program 1 times [2022-11-26 00:12:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:09,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931823328] [2022-11-26 00:12:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:12:09,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:09,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931823328] [2022-11-26 00:12:09,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931823328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:09,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:09,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:12:09,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681128372] [2022-11-26 00:12:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:12:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:12:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:09,655 INFO L87 Difference]: Start difference. First operand 4639 states and 18410 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-26 00:12:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:10,833 INFO L93 Difference]: Finished difference Result 5044 states and 20034 transitions. [2022-11-26 00:12:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:12:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-11-26 00:12:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:10,860 INFO L225 Difference]: With dead ends: 5044 [2022-11-26 00:12:10,861 INFO L226 Difference]: Without dead ends: 5044 [2022-11-26 00:12:10,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:10,863 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 56 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:10,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 68 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:12:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5044 states. [2022-11-26 00:12:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 5044. [2022-11-26 00:12:10,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5044 states, 5041 states have (on average 3.9742114659789722) internal successors, (20034), 5043 states have internal predecessors, (20034), 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) [2022-11-26 00:12:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 20034 transitions. [2022-11-26 00:12:11,021 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 20034 transitions. Word has length 22 [2022-11-26 00:12:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:11,021 INFO L495 AbstractCegarLoop]: Abstraction has 5044 states and 20034 transitions. [2022-11-26 00:12:11,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-26 00:12:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 20034 transitions. [2022-11-26 00:12:11,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:12:11,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:11,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:12:11,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:12:11,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1602651730, now seen corresponding path program 3 times [2022-11-26 00:12:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:11,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20277369] [2022-11-26 00:12:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:12:11,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:11,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20277369] [2022-11-26 00:12:11,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20277369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:12:11,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414837657] [2022-11-26 00:12:11,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:12:11,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:12:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:12:11,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:12:11,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:12:22,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:12:22,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:12:22,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:12:22,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:12:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:12:22,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:12:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:12:23,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414837657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:12:23,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2093963079] [2022-11-26 00:12:23,131 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:337) 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) [2022-11-26 00:12:23,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:12:23,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-26 00:12:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818561729] [2022-11-26 00:12:23,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:12:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:12:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:12:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:12:23,150 INFO L87 Difference]: Start difference. First operand 5044 states and 20034 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 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) [2022-11-26 00:12:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:24,497 INFO L93 Difference]: Finished difference Result 11703 states and 45718 transitions. [2022-11-26 00:12:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:12:24,497 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 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 23 [2022-11-26 00:12:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:24,552 INFO L225 Difference]: With dead ends: 11703 [2022-11-26 00:12:24,552 INFO L226 Difference]: Without dead ends: 11703 [2022-11-26 00:12:24,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:12:24,553 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 385 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:24,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 643 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:12:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2022-11-26 00:12:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 9419. [2022-11-26 00:12:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9419 states, 9416 states have (on average 4.076146983857265) internal successors, (38381), 9418 states have internal predecessors, (38381), 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) [2022-11-26 00:12:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9419 states to 9419 states and 38381 transitions. [2022-11-26 00:12:24,904 INFO L78 Accepts]: Start accepts. Automaton has 9419 states and 38381 transitions. Word has length 23 [2022-11-26 00:12:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:24,906 INFO L495 AbstractCegarLoop]: Abstraction has 9419 states and 38381 transitions. [2022-11-26 00:12:24,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 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) [2022-11-26 00:12:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 9419 states and 38381 transitions. [2022-11-26 00:12:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:12:24,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:24,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:24,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:12:25,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:12:25,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:12:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1861945710, now seen corresponding path program 1 times [2022-11-26 00:12:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:25,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432659556] [2022-11-26 00:12:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:12:25,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432659556] [2022-11-26 00:12:25,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432659556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:25,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:25,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:12:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905017636] [2022-11-26 00:12:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:12:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:12:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:25,498 INFO L87 Difference]: Start difference. First operand 9419 states and 38381 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2022-11-26 00:12:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:27,099 INFO L93 Difference]: Finished difference Result 9494 states and 38591 transitions. [2022-11-26 00:12:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:12:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2022-11-26 00:12:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:27,154 INFO L225 Difference]: With dead ends: 9494 [2022-11-26 00:12:27,154 INFO L226 Difference]: Without dead ends: 7217 [2022-11-26 00:12:27,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:12:27,155 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:27,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 81 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:12:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7217 states. [2022-11-26 00:12:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7217 to 7217. [2022-11-26 00:12:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7217 states, 7214 states have (on average 3.861796506792348) internal successors, (27859), 7216 states have internal predecessors, (27859), 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) [2022-11-26 00:12:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7217 states to 7217 states and 27859 transitions. [2022-11-26 00:12:27,385 INFO L78 Accepts]: Start accepts. Automaton has 7217 states and 27859 transitions. Word has length 25 [2022-11-26 00:12:27,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:27,385 INFO L495 AbstractCegarLoop]: Abstraction has 7217 states and 27859 transitions. [2022-11-26 00:12:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2022-11-26 00:12:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7217 states and 27859 transitions. [2022-11-26 00:12:27,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:12:27,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:27,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:27,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:12:27,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:12:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1957365290, now seen corresponding path program 4 times [2022-11-26 00:12:27,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:27,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735943457] [2022-11-26 00:12:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:12:29,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735943457] [2022-11-26 00:12:29,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735943457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:12:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002573904] [2022-11-26 00:12:29,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:12:29,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:12:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:12:29,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:12:29,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:12:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:29,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-26 00:12:29,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:12:29,789 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-26 00:12:29,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-26 00:12:29,926 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:12:29,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:12:30,060 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-26 00:12:30,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:12:30,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-26 00:12:30,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-26 00:12:30,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-26 00:12:30,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-26 00:12:31,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:31,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 116 [2022-11-26 00:12:31,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2022-11-26 00:12:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:12:35,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:12:35,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002573904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:35,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:12:35,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 24 [2022-11-26 00:12:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735689942] [2022-11-26 00:12:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:35,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:12:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:12:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=519, Unknown=1, NotChecked=0, Total=650 [2022-11-26 00:12:35,387 INFO L87 Difference]: Start difference. First operand 7217 states and 27859 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:12:41,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:12:43,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:12:45,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:12:47,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:12:53,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:12:55,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:12:57,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:13:00,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:13:02,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:13:04,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:13:06,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:13:08,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:13:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:08,515 INFO L93 Difference]: Finished difference Result 11556 states and 45007 transitions. [2022-11-26 00:13:08,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:13:08,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-26 00:13:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:08,582 INFO L225 Difference]: With dead ends: 11556 [2022-11-26 00:13:08,582 INFO L226 Difference]: Without dead ends: 11371 [2022-11-26 00:13:08,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=354, Invalid=975, Unknown=3, NotChecked=0, Total=1332 [2022-11-26 00:13:08,584 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 347 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 46 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:08,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 177 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 640 Invalid, 12 Unknown, 0 Unchecked, 26.4s Time] [2022-11-26 00:13:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2022-11-26 00:13:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 7143. [2022-11-26 00:13:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7143 states, 7140 states have (on average 3.8603641456582634) internal successors, (27563), 7142 states have internal predecessors, (27563), 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) [2022-11-26 00:13:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 27563 transitions. [2022-11-26 00:13:08,881 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 27563 transitions. Word has length 26 [2022-11-26 00:13:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:08,881 INFO L495 AbstractCegarLoop]: Abstraction has 7143 states and 27563 transitions. [2022-11-26 00:13:08,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 27563 transitions. [2022-11-26 00:13:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:13:08,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:08,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:08,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:09,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-26 00:13:09,102 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:13:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -628047477, now seen corresponding path program 1 times [2022-11-26 00:13:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:09,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808954252] [2022-11-26 00:13:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:13:10,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:10,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808954252] [2022-11-26 00:13:10,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808954252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:10,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:10,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:13:10,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15091848] [2022-11-26 00:13:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:13:10,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:13:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:13:10,331 INFO L87 Difference]: Start difference. First operand 7143 states and 27563 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-11-26 00:13:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:11,702 INFO L93 Difference]: Finished difference Result 14108 states and 53880 transitions. [2022-11-26 00:13:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:13:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2022-11-26 00:13:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:11,783 INFO L225 Difference]: With dead ends: 14108 [2022-11-26 00:13:11,784 INFO L226 Difference]: Without dead ends: 13664 [2022-11-26 00:13:11,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:13:11,785 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 287 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:11,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:13:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13664 states. [2022-11-26 00:13:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13664 to 9535. [2022-11-26 00:13:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9535 states, 9532 states have (on average 3.855434326479228) internal successors, (36750), 9534 states have internal predecessors, (36750), 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) [2022-11-26 00:13:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 36750 transitions. [2022-11-26 00:13:12,143 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 36750 transitions. Word has length 27 [2022-11-26 00:13:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:12,143 INFO L495 AbstractCegarLoop]: Abstraction has 9535 states and 36750 transitions. [2022-11-26 00:13:12,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-11-26 00:13:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 36750 transitions. [2022-11-26 00:13:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:13:12,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:12,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:12,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:13:12,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:13:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash -460438991, now seen corresponding path program 2 times [2022-11-26 00:13:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84077924] [2022-11-26 00:13:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:13:13,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84077924] [2022-11-26 00:13:13,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84077924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:13,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:13,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:13:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032178307] [2022-11-26 00:13:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:13:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:13:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:13:13,097 INFO L87 Difference]: Start difference. First operand 9535 states and 36750 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-11-26 00:13:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:14,419 INFO L93 Difference]: Finished difference Result 15302 states and 59269 transitions. [2022-11-26 00:13:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:13:14,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2022-11-26 00:13:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:14,493 INFO L225 Difference]: With dead ends: 15302 [2022-11-26 00:13:14,493 INFO L226 Difference]: Without dead ends: 14858 [2022-11-26 00:13:14,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:13:14,494 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 221 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:14,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 121 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:13:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-11-26 00:13:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 9091. [2022-11-26 00:13:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9091 states, 9088 states have (on average 3.8687279929577465) internal successors, (35159), 9090 states have internal predecessors, (35159), 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) [2022-11-26 00:13:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9091 states to 9091 states and 35159 transitions. [2022-11-26 00:13:14,934 INFO L78 Accepts]: Start accepts. Automaton has 9091 states and 35159 transitions. Word has length 27 [2022-11-26 00:13:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:14,935 INFO L495 AbstractCegarLoop]: Abstraction has 9091 states and 35159 transitions. [2022-11-26 00:13:14,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-11-26 00:13:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9091 states and 35159 transitions. [2022-11-26 00:13:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-26 00:13:14,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:14,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:13:14,952 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:13:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 709164939, now seen corresponding path program 1 times [2022-11-26 00:13:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:14,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148586705] [2022-11-26 00:13:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:14,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:13:15,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148586705] [2022-11-26 00:13:15,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148586705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044472809] [2022-11-26 00:13:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:15,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:15,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:15,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:15,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:13:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:15,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:13:15,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:13:15,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:13:15,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044472809] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:15,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:13:15,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-11-26 00:13:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52211709] [2022-11-26 00:13:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:15,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:13:15,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:15,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:13:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:13:15,584 INFO L87 Difference]: Start difference. First operand 9091 states and 35159 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-11-26 00:13:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:15,953 INFO L93 Difference]: Finished difference Result 9091 states and 34859 transitions. [2022-11-26 00:13:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:13:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2022-11-26 00:13:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:15,988 INFO L225 Difference]: With dead ends: 9091 [2022-11-26 00:13:15,989 INFO L226 Difference]: Without dead ends: 9091 [2022-11-26 00:13:15,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:13:15,996 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 127 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:15,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 40 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:13:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9091 states. [2022-11-26 00:13:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9091 to 9091. [2022-11-26 00:13:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9091 states, 9088 states have (on average 3.835717429577465) internal successors, (34859), 9090 states have internal predecessors, (34859), 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) [2022-11-26 00:13:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9091 states to 9091 states and 34859 transitions. [2022-11-26 00:13:16,289 INFO L78 Accepts]: Start accepts. Automaton has 9091 states and 34859 transitions. Word has length 31 [2022-11-26 00:13:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:16,289 INFO L495 AbstractCegarLoop]: Abstraction has 9091 states and 34859 transitions. [2022-11-26 00:13:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2022-11-26 00:13:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 9091 states and 34859 transitions. [2022-11-26 00:13:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:13:16,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:16,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:16,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-26 00:13:16,508 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:13:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -874626508, now seen corresponding path program 3 times [2022-11-26 00:13:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:16,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299512955] [2022-11-26 00:13:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:13:18,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:18,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299512955] [2022-11-26 00:13:18,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299512955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:18,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38088767] [2022-11-26 00:13:18,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:13:18,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:18,865 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:18,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:22:36,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:22:36,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:22:36,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-26 00:22:36,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:22:36,733 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-26 00:22:36,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-26 00:22:36,806 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 00:22:36,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 00:22:37,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-26 00:22:37,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-26 00:22:37,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-26 00:22:37,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-26 00:22:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:38,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:22:38,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:22:38,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:22:38,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:22:38,250 INFO L321 Elim1Store]: treesize reduction 104, result has 48.3 percent of original size [2022-11-26 00:22:38,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 186 treesize of output 184 [2022-11-26 00:22:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:22:38,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:23:16,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:23:16,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:23:16,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:23:16,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:23:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:23:21,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38088767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:23:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1180945349] [2022-11-26 00:23:21,274 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:337) 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) [2022-11-26 00:23:21,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:23:21,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 36 [2022-11-26 00:23:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893789572] [2022-11-26 00:23:21,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:23:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-26 00:23:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:23:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-26 00:23:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2022-11-26 00:23:21,279 INFO L87 Difference]: Start difference. First operand 9091 states and 34859 transitions. Second operand has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 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) [2022-11-26 00:23:43,254 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 152 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:23:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:23:56,379 INFO L93 Difference]: Finished difference Result 16427 states and 63884 transitions. [2022-11-26 00:23:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:23:56,380 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 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 32 [2022-11-26 00:23:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:23:56,436 INFO L225 Difference]: With dead ends: 16427 [2022-11-26 00:23:56,436 INFO L226 Difference]: Without dead ends: 16242 [2022-11-26 00:23:56,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=583, Invalid=2387, Unknown=0, NotChecked=0, Total=2970 [2022-11-26 00:23:56,438 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 991 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:23:56,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 670 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2124 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2022-11-26 00:23:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16242 states. [2022-11-26 00:23:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16242 to 8499. [2022-11-26 00:23:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8499 states, 8496 states have (on average 3.824270244821092) internal successors, (32491), 8498 states have internal predecessors, (32491), 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) [2022-11-26 00:23:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 32491 transitions. [2022-11-26 00:23:56,741 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 32491 transitions. Word has length 32 [2022-11-26 00:23:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:23:56,742 INFO L495 AbstractCegarLoop]: Abstraction has 8499 states and 32491 transitions. [2022-11-26 00:23:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 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) [2022-11-26 00:23:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 32491 transitions. [2022-11-26 00:23:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 00:23:56,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:23:56,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:23:56,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:23:56,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-26 00:23:56,971 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:23:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:23:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2058156531, now seen corresponding path program 1 times [2022-11-26 00:23:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:23:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039461761] [2022-11-26 00:23:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:23:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:23:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:23:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:23:57,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:23:57,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039461761] [2022-11-26 00:23:57,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039461761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:23:57,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875379789] [2022-11-26 00:23:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:23:57,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:23:57,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:23:57,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:23:57,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:23:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:23:57,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:23:57,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:23:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:23:57,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:23:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:23:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875379789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:23:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643848751] [2022-11-26 00:23:57,903 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:337) 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) [2022-11-26 00:23:57,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:23:57,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-26 00:23:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417388484] [2022-11-26 00:23:57,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:23:57,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:23:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:23:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:23:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:23:57,906 INFO L87 Difference]: Start difference. First operand 8499 states and 32491 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 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) [2022-11-26 00:23:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:23:59,062 INFO L93 Difference]: Finished difference Result 6541 states and 24799 transitions. [2022-11-26 00:23:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:23:59,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 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 34 [2022-11-26 00:23:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:23:59,082 INFO L225 Difference]: With dead ends: 6541 [2022-11-26 00:23:59,082 INFO L226 Difference]: Without dead ends: 6541 [2022-11-26 00:23:59,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:23:59,083 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 298 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:23:59,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 247 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 00:23:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2022-11-26 00:23:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 6516. [2022-11-26 00:23:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6516 states, 6513 states have (on average 3.799938584369722) internal successors, (24749), 6515 states have internal predecessors, (24749), 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) [2022-11-26 00:23:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6516 states to 6516 states and 24749 transitions. [2022-11-26 00:23:59,288 INFO L78 Accepts]: Start accepts. Automaton has 6516 states and 24749 transitions. Word has length 34 [2022-11-26 00:23:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:23:59,288 INFO L495 AbstractCegarLoop]: Abstraction has 6516 states and 24749 transitions. [2022-11-26 00:23:59,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 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) [2022-11-26 00:23:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6516 states and 24749 transitions. [2022-11-26 00:23:59,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-26 00:23:59,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:23:59,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:23:59,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:23:59,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-26 00:23:59,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-26 00:23:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:23:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1191308271, now seen corresponding path program 2 times [2022-11-26 00:23:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:23:59,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044787646] [2022-11-26 00:23:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:23:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:23:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:24:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:24:01,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:24:01,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044787646] [2022-11-26 00:24:01,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044787646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:24:01,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874122672] [2022-11-26 00:24:01,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:24:01,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:24:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:24:01,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:24:01,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b913907f-913f-4dcc-a882-e7b535711a1b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:24:01,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-26 00:24:01,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:24:01,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-26 00:24:01,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:24:01,618 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-26 00:24:01,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-26 00:24:01,674 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:24:01,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:24:01,777 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-26 00:24:01,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-26 00:24:02,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-26 00:24:02,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-26 00:24:02,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:24:02,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-26 00:24:02,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:24:02,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-26 00:24:02,654 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-11-26 00:24:02,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 116 [2022-11-26 00:24:02,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2022-11-26 00:24:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:24:02,748 INFO L328 TraceCheckSpWp]: Computing backward predicates...