./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 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_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba --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 a9033b662018b20bd097f60ff2bfef7dede098e2e465ab8a115c418add4298d1 --- 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-b5237d8 [2022-11-22 00:08:07,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:08:07,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:08:07,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:08:07,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:08:07,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:08:07,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:08:07,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:08:07,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:08:07,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:08:07,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:08:07,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:08:07,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:08:07,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:08:07,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:08:07,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:08:07,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:08:07,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:08:07,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:08:07,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:08:07,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:08:07,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:08:07,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:08:07,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:08:07,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:08:07,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:08:07,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:08:07,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:08:07,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:08:07,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:08:07,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:08:07,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:08:07,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:08:07,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:08:07,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:08:07,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:08:07,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:08:07,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:08:07,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:08:07,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:08:07,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:08:07,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 00:08:07,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:08:07,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:08:07,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:08:07,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:08:07,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:08:07,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:08:07,681 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:08:07,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:08:07,682 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:08:07,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:08:07,682 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:08:07,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:08:07,682 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:08:07,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:08:07,683 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:08:07,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:08:07,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:08:07,683 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:08:07,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:08:07,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:08:07,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:08:07,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:08:07,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:08:07,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:08:07,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:08:07,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:08:07,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:08:07,686 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 00:08:07,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:08:07,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:08:07,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:08:07,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:08:07,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:08:07,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:08:07,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:08:07,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:08:07,687 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:08:07,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:08:07,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:08:07,688 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:08:07,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:08:07,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:08:07,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:08:07,689 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_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9033b662018b20bd097f60ff2bfef7dede098e2e465ab8a115c418add4298d1 [2022-11-22 00:08:07,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:08:08,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:08:08,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:08:08,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:08:08,019 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:08:08,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-atomic/peterson-b.i [2022-11-22 00:08:11,070 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:08:11,324 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:08:11,324 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/sv-benchmarks/c/pthread-atomic/peterson-b.i [2022-11-22 00:08:11,355 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/data/03d1fa702/a988693f21dd468bb32af4f219f68673/FLAG2e4e6b35e [2022-11-22 00:08:11,374 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/data/03d1fa702/a988693f21dd468bb32af4f219f68673 [2022-11-22 00:08:11,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:08:11,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:08:11,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:08:11,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:08:11,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:08:11,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:08:11" (1/1) ... [2022-11-22 00:08:11,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7664edef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:11, skipping insertion in model container [2022-11-22 00:08:11,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:08:11" (1/1) ... [2022-11-22 00:08:11,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:08:11,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:08:11,915 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_964c9b83-3f5b-4632-b7ad-ce2093c09c36/sv-benchmarks/c/pthread-atomic/peterson-b.i[30010,30023] [2022-11-22 00:08:11,920 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_964c9b83-3f5b-4632-b7ad-ce2093c09c36/sv-benchmarks/c/pthread-atomic/peterson-b.i[30174,30187] [2022-11-22 00:08:11,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:08:11,944 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:08:11,974 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_964c9b83-3f5b-4632-b7ad-ce2093c09c36/sv-benchmarks/c/pthread-atomic/peterson-b.i[30010,30023] [2022-11-22 00:08:11,976 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_964c9b83-3f5b-4632-b7ad-ce2093c09c36/sv-benchmarks/c/pthread-atomic/peterson-b.i[30174,30187] [2022-11-22 00:08:11,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:08:12,011 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:08:12,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12 WrapperNode [2022-11-22 00:08:12,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:08:12,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:08:12,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:08:12,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:08:12,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,096 INFO L138 Inliner]: procedures = 167, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-11-22 00:08:12,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:08:12,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:08:12,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:08:12,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:08:12,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:08:12,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:08:12,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:08:12,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:08:12,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (1/1) ... [2022-11-22 00:08:12,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:08:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:08:12,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:08:12,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:08:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-22 00:08:12,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-22 00:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-22 00:08:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-22 00:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:08:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:08:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:08:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:08:12,261 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 00:08:12,431 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:08:12,434 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:08:12,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:08:12,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:08:12,734 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 00:08:12,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:08:12 BoogieIcfgContainer [2022-11-22 00:08:12,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:08:12,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:08:12,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:08:12,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:08:12,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:08:11" (1/3) ... [2022-11-22 00:08:12,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549479f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:08:12, skipping insertion in model container [2022-11-22 00:08:12,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:08:12" (2/3) ... [2022-11-22 00:08:12,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549479f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:08:12, skipping insertion in model container [2022-11-22 00:08:12,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:08:12" (3/3) ... [2022-11-22 00:08:12,746 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson-b.i [2022-11-22 00:08:12,755 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 00:08:12,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:08:12,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-22 00:08:12,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 00:08:12,892 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 00:08:12,939 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 00:08:12,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 156 transitions, 328 flow [2022-11-22 00:08:12,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 156 transitions, 328 flow [2022-11-22 00:08:12,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 156 transitions, 328 flow [2022-11-22 00:08:13,034 INFO L130 PetriNetUnfolder]: 8/154 cut-off events. [2022-11-22 00:08:13,035 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 00:08:13,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 154 events. 8/154 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 287 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-11-22 00:08:13,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 8036 [2022-11-22 00:08:16,029 INFO L134 LiptonReduction]: Checked pairs total: 28907 [2022-11-22 00:08:16,029 INFO L136 LiptonReduction]: Total number of compositions: 99 [2022-11-22 00:08:16,039 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 74 transitions, 164 flow [2022-11-22 00:08:16,173 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2493 states, 2358 states have (on average 2.96225614927905) internal successors, (6985), 2492 states have internal predecessors, (6985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:16,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:08:16,213 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;@3708296d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:08:16,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-22 00:08:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 2493 states, 2358 states have (on average 2.96225614927905) internal successors, (6985), 2492 states have internal predecessors, (6985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:08:16,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:16,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:08:16,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:16,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash 548532999, now seen corresponding path program 1 times [2022-11-22 00:08:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:16,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117179300] [2022-11-22 00:08:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:16,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:16,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117179300] [2022-11-22 00:08:16,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117179300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:16,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:16,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:16,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549373184] [2022-11-22 00:08:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:16,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:16,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:16,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:16,557 INFO L87 Difference]: Start difference. First operand has 2493 states, 2358 states have (on average 2.96225614927905) internal successors, (6985), 2492 states have internal predecessors, (6985), 0 states have call successors, (0), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:16,746 INFO L93 Difference]: Finished difference Result 1743 states and 4420 transitions. [2022-11-22 00:08:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-22 00:08:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:16,775 INFO L225 Difference]: With dead ends: 1743 [2022-11-22 00:08:16,776 INFO L226 Difference]: Without dead ends: 1740 [2022-11-22 00:08:16,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:16,780 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:16,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 66 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-11-22 00:08:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1700. [2022-11-22 00:08:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1639 states have (on average 2.63026235509457) internal successors, (4311), 1699 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 4311 transitions. [2022-11-22 00:08:16,926 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 4311 transitions. Word has length 5 [2022-11-22 00:08:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:16,927 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 4311 transitions. [2022-11-22 00:08:16,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4311 transitions. [2022-11-22 00:08:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:08:16,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:16,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:16,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:08:16,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:16,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1109450121, now seen corresponding path program 1 times [2022-11-22 00:08:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:16,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79780808] [2022-11-22 00:08:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:16,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:16,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79780808] [2022-11-22 00:08:16,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79780808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:16,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:16,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045700014] [2022-11-22 00:08:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:17,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,001 INFO L87 Difference]: Start difference. First operand 1700 states and 4311 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:17,107 INFO L93 Difference]: Finished difference Result 1770 states and 4488 transitions. [2022-11-22 00:08:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:08:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:17,119 INFO L225 Difference]: With dead ends: 1770 [2022-11-22 00:08:17,119 INFO L226 Difference]: Without dead ends: 1770 [2022-11-22 00:08:17,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,121 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 31 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:17,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 65 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-11-22 00:08:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1728. [2022-11-22 00:08:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1668 states have (on average 2.6270983213429258) internal successors, (4382), 1727 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 4382 transitions. [2022-11-22 00:08:17,194 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 4382 transitions. Word has length 7 [2022-11-22 00:08:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:17,195 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 4382 transitions. [2022-11-22 00:08:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 4382 transitions. [2022-11-22 00:08:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:08:17,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:17,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:08:17,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1003486148, now seen corresponding path program 1 times [2022-11-22 00:08:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:17,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295854624] [2022-11-22 00:08:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:17,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:17,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295854624] [2022-11-22 00:08:17,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295854624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:17,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:17,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270355865] [2022-11-22 00:08:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,253 INFO L87 Difference]: Start difference. First operand 1728 states and 4382 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:17,375 INFO L93 Difference]: Finished difference Result 1760 states and 4465 transitions. [2022-11-22 00:08:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:17,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 00:08:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:17,384 INFO L225 Difference]: With dead ends: 1760 [2022-11-22 00:08:17,385 INFO L226 Difference]: Without dead ends: 1760 [2022-11-22 00:08:17,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,389 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:17,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 64 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2022-11-22 00:08:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2022-11-22 00:08:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1700 states have (on average 2.626470588235294) internal successors, (4465), 1759 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 4465 transitions. [2022-11-22 00:08:17,446 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 4465 transitions. Word has length 8 [2022-11-22 00:08:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:17,447 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 4465 transitions. [2022-11-22 00:08:17,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 4465 transitions. [2022-11-22 00:08:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:08:17,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:17,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:08:17,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2017529888, now seen corresponding path program 1 times [2022-11-22 00:08:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:17,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537757143] [2022-11-22 00:08:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:17,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:17,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537757143] [2022-11-22 00:08:17,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537757143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:17,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:17,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590773522] [2022-11-22 00:08:17,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:17,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,534 INFO L87 Difference]: Start difference. First operand 1760 states and 4465 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:17,682 INFO L93 Difference]: Finished difference Result 2750 states and 7006 transitions. [2022-11-22 00:08:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:17,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-22 00:08:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:17,697 INFO L225 Difference]: With dead ends: 2750 [2022-11-22 00:08:17,697 INFO L226 Difference]: Without dead ends: 2750 [2022-11-22 00:08:17,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,700 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 51 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:17,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 65 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2022-11-22 00:08:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 1798. [2022-11-22 00:08:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1739 states have (on average 2.62392179413456) internal successors, (4563), 1797 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 4563 transitions. [2022-11-22 00:08:17,784 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 4563 transitions. Word has length 10 [2022-11-22 00:08:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:17,784 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 4563 transitions. [2022-11-22 00:08:17,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 4563 transitions. [2022-11-22 00:08:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 00:08:17,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:17,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:17,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:08:17,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1854715697, now seen corresponding path program 1 times [2022-11-22 00:08:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:17,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165248181] [2022-11-22 00:08:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:17,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:17,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165248181] [2022-11-22 00:08:17,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165248181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:17,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:17,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405240377] [2022-11-22 00:08:17,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:17,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,866 INFO L87 Difference]: Start difference. First operand 1798 states and 4563 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:17,964 INFO L93 Difference]: Finished difference Result 1820 states and 4619 transitions. [2022-11-22 00:08:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-22 00:08:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:17,973 INFO L225 Difference]: With dead ends: 1820 [2022-11-22 00:08:17,973 INFO L226 Difference]: Without dead ends: 1820 [2022-11-22 00:08:17,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:17,974 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:17,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-11-22 00:08:18,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2022-11-22 00:08:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1763 states have (on average 2.6199659671015314) internal successors, (4619), 1819 states have internal predecessors, (4619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 4619 transitions. [2022-11-22 00:08:18,026 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 4619 transitions. Word has length 10 [2022-11-22 00:08:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:18,026 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 4619 transitions. [2022-11-22 00:08:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 4619 transitions. [2022-11-22 00:08:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 00:08:18,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:18,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:08:18,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash 29792929, now seen corresponding path program 1 times [2022-11-22 00:08:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:18,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807023007] [2022-11-22 00:08:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:18,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807023007] [2022-11-22 00:08:18,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807023007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:18,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:18,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881975487] [2022-11-22 00:08:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:18,074 INFO L87 Difference]: Start difference. First operand 1820 states and 4619 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:18,192 INFO L93 Difference]: Finished difference Result 2794 states and 7118 transitions. [2022-11-22 00:08:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 00:08:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:18,221 INFO L225 Difference]: With dead ends: 2794 [2022-11-22 00:08:18,222 INFO L226 Difference]: Without dead ends: 2794 [2022-11-22 00:08:18,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:18,222 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 49 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:18,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 65 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2022-11-22 00:08:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1850. [2022-11-22 00:08:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1796 states have (on average 2.6141425389755013) internal successors, (4695), 1849 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 4695 transitions. [2022-11-22 00:08:18,284 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 4695 transitions. Word has length 12 [2022-11-22 00:08:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:18,285 INFO L495 AbstractCegarLoop]: Abstraction has 1850 states and 4695 transitions. [2022-11-22 00:08:18,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 4695 transitions. [2022-11-22 00:08:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 00:08:18,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:18,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:18,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:08:18,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash 460996567, now seen corresponding path program 1 times [2022-11-22 00:08:18,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:18,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641634232] [2022-11-22 00:08:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:08:18,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641634232] [2022-11-22 00:08:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641634232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:18,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:08:18,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:08:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607142948] [2022-11-22 00:08:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:08:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:08:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:18,319 INFO L87 Difference]: Start difference. First operand 1850 states and 4695 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2022-11-22 00:08:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:18,437 INFO L93 Difference]: Finished difference Result 3388 states and 8549 transitions. [2022-11-22 00:08:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:08:18,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 [2022-11-22 00:08:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:18,465 INFO L225 Difference]: With dead ends: 3388 [2022-11-22 00:08:18,465 INFO L226 Difference]: Without dead ends: 3388 [2022-11-22 00:08:18,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:08:18,467 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 57 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:18,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 73 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:08:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2022-11-22 00:08:18,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1868. [2022-11-22 00:08:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1821 states have (on average 2.600768808347062) internal successors, (4736), 1867 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:08:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 4736 transitions. [2022-11-22 00:08:18,552 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 4736 transitions. Word has length 13 [2022-11-22 00:08:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:18,553 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 4736 transitions. [2022-11-22 00:08:18,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2022-11-22 00:08:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 4736 transitions. [2022-11-22 00:08:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 00:08:18,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:18,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:18,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:08:18,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-11-22 00:08:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash 385851099, now seen corresponding path program 1 times [2022-11-22 00:08:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457888113] [2022-11-22 00:08:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:08:18,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:08:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:08:18,630 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:08:18,630 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:08:18,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (31 of 32 remaining) [2022-11-22 00:08:18,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2022-11-22 00:08:18,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2022-11-22 00:08:18,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2022-11-22 00:08:18,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2022-11-22 00:08:18,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2022-11-22 00:08:18,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2022-11-22 00:08:18,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (24 of 32 remaining) [2022-11-22 00:08:18,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2022-11-22 00:08:18,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2022-11-22 00:08:18,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2022-11-22 00:08:18,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2022-11-22 00:08:18,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2022-11-22 00:08:18,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2022-11-22 00:08:18,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2022-11-22 00:08:18,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2022-11-22 00:08:18,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2022-11-22 00:08:18,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 32 remaining) [2022-11-22 00:08:18,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 32 remaining) [2022-11-22 00:08:18,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2022-11-22 00:08:18,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2022-11-22 00:08:18,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2022-11-22 00:08:18,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2022-11-22 00:08:18,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2022-11-22 00:08:18,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2022-11-22 00:08:18,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2022-11-22 00:08:18,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2022-11-22 00:08:18,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2022-11-22 00:08:18,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2022-11-22 00:08:18,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2022-11-22 00:08:18,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2022-11-22 00:08:18,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2022-11-22 00:08:18,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:08:18,642 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:08:18,648 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 00:08:18,649 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:08:18,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:08:18 BasicIcfg [2022-11-22 00:08:18,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:08:18,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:08:18,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:08:18,677 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:08:18,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:08:12" (3/4) ... [2022-11-22 00:08:18,681 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 00:08:18,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:08:18,682 INFO L158 Benchmark]: Toolchain (without parser) took 7303.75ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 114.5MB in the beginning and 62.6MB in the end (delta: 51.9MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. [2022-11-22 00:08:18,682 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 109.1MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:08:18,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.06ms. Allocated memory is still 157.3MB. Free memory was 114.5MB in the beginning and 115.1MB in the end (delta: -594.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 00:08:18,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.60ms. Allocated memory is still 157.3MB. Free memory was 115.1MB in the beginning and 112.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:08:18,683 INFO L158 Benchmark]: Boogie Preprocessor took 62.51ms. Allocated memory is still 157.3MB. Free memory was 112.9MB in the beginning and 111.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:08:18,683 INFO L158 Benchmark]: RCFGBuilder took 576.39ms. Allocated memory is still 157.3MB. Free memory was 111.4MB in the beginning and 94.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 00:08:18,684 INFO L158 Benchmark]: TraceAbstraction took 5937.20ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 93.7MB in the beginning and 62.6MB in the end (delta: 31.1MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2022-11-22 00:08:18,684 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 188.7MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:08:18,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 109.1MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.06ms. Allocated memory is still 157.3MB. Free memory was 114.5MB in the beginning and 115.1MB in the end (delta: -594.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.60ms. Allocated memory is still 157.3MB. Free memory was 115.1MB in the beginning and 112.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.51ms. Allocated memory is still 157.3MB. Free memory was 112.9MB in the beginning and 111.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 576.39ms. Allocated memory is still 157.3MB. Free memory was 111.4MB in the beginning and 94.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5937.20ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 93.7MB in the beginning and 62.6MB in the end (delta: 31.1MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 188.7MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 155 PlacesBefore, 74 PlacesAfterwards, 156 TransitionsBefore, 74 TransitionsAfterwards, 8036 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 99 TotalNumberOfCompositions, 28907 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15928, independent: 15346, independent conditional: 0, independent unconditional: 15346, dependent: 582, dependent conditional: 0, dependent unconditional: 582, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5694, independent: 5582, independent conditional: 0, independent unconditional: 5582, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5694, independent: 5532, independent conditional: 0, independent unconditional: 5532, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 162, independent: 50, independent conditional: 0, independent unconditional: 50, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 191, independent: 47, independent conditional: 0, independent unconditional: 47, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15928, independent: 9764, independent conditional: 0, independent unconditional: 9764, dependent: 470, dependent conditional: 0, dependent unconditional: 470, unknown: 5694, unknown conditional: 0, unknown unconditional: 5694] , Statistics on independence cache: Total cache size (in pairs): 1393, Positive cache size: 1324, Positive conditional cache size: 0, Positive unconditional cache size: 1324, Negative cache size: 69, Negative conditional cache size: 0, Negative unconditional cache size: 69, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 690]: Data race detected Data race detected The following path leads to a data race: [L684] 0 int flag1 = 0, flag2 = 0; [L685] 0 int turn; [L686] 0 int x; [L706] 0 pthread_t t1, t2; [L707] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [_={0:0}, flag1=0, flag2=0, pthread_create(&t1, 0, thr1, 0)=-2, t1={3:0}, t2={5:0}, turn=0, x=0] [L688] 1 flag1 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag1 = 1=51, flag2=0, turn=0, x=0] [L689] 1 turn = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=0, turn=1, x=0] [L690] 1 flag2==1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=0, turn=1, x=0] [L708] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [_={0:0}, _={0:0}, _={0:0}, flag1=1, flag2=0, pthread_create(&t2, 0, thr2, 0)=-1, t1={3:0}, t2={5:0}, turn=1, x=0] [L697] 2 flag2 = 1 VAL [_={0:0}, _={0:0}, _={0:0}, _={0:0}, flag1=1, flag2=1, flag2 = 1=49, turn=1, x=0] [L690] 1 flag2==1 VAL [_={0:0}, _={0:0}, _={0:0}, _={0:0}, flag1=1, flag2=1, flag2 = 1=49, turn=1, x=0] Now there is a data race on ~flag2~0 between C: flag2 = 1 [697] and C: flag2==1 [690] - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 689]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 243 locations, 32 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 461 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 690 IncrementalHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 296 mSDtfsCounter, 690 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2493occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 3498 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-22 00:08:18,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964c9b83-3f5b-4632-b7ad-ce2093c09c36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE