./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 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_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/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_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/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_e17f7e21-4f43-41b5-850c-ca76e1a4534a/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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:31:50,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:31:50,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:31:50,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:31:50,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:31:50,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:31:50,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:31:50,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:31:50,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:31:50,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:31:50,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:31:50,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:31:50,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:31:50,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:31:50,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:31:50,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:31:50,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:31:50,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:31:50,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:31:51,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:31:51,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:31:51,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:31:51,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:31:51,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:31:51,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:31:51,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:31:51,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:31:51,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:31:51,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:31:51,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:31:51,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:31:51,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:31:51,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:31:51,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:31:51,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:31:51,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:31:51,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:31:51,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:31:51,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:31:51,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:31:51,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:31:51,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 01:31:51,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:31:51,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:31:51,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:31:51,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:31:51,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:31:51,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:31:51,077 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:31:51,077 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:31:51,077 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:31:51,077 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:31:51,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:31:51,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:31:51,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:31:51,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:31:51,079 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:31:51,080 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:31:51,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:31:51,080 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:31:51,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:31:51,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:31:51,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:31:51,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:31:51,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:31:51,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:31:51,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:31:51,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:31:51,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:31:51,084 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 01:31:51,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:31:51,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:31:51,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:31:51,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:31:51,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:31:51,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:31:51,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:31:51,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:31:51,087 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:31:51,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:31:51,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:31:51,088 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:31:51,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:31:51,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:31:51,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:31:51,089 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_e17f7e21-4f43-41b5-850c-ca76e1a4534a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 [2022-11-22 01:31:51,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:31:51,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:31:51,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:31:51,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:31:51,416 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:31:51,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-22 01:31:54,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:31:54,710 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:31:54,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2022-11-22 01:31:54,721 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/data/407658432/1aa09af0ce4a421a8893ee11b8b0c867/FLAG04649c33c [2022-11-22 01:31:54,742 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/data/407658432/1aa09af0ce4a421a8893ee11b8b0c867 [2022-11-22 01:31:54,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:31:54,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:31:54,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:31:54,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:31:54,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:31:54,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:31:54" (1/1) ... [2022-11-22 01:31:54,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7f679b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:54, skipping insertion in model container [2022-11-22 01:31:54,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:31:54" (1/1) ... [2022-11-22 01:31:54,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:31:54,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:31:55,018 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_e17f7e21-4f43-41b5-850c-ca76e1a4534a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-22 01:31:55,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:31:55,046 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:31:55,108 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_e17f7e21-4f43-41b5-850c-ca76e1a4534a/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2022-11-22 01:31:55,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:31:55,140 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:31:55,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55 WrapperNode [2022-11-22 01:31:55,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:31:55,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:31:55,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:31:55,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:31:55,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,205 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 214 [2022-11-22 01:31:55,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:31:55,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:31:55,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:31:55,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:31:55,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,242 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:31:55,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:31:55,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:31:55,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:31:55,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (1/1) ... [2022-11-22 01:31:55,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:31:55,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:31:55,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:31:55,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:31:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:31:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:31:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:31:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:31:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:31:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:31:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 01:31:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 01:31:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-22 01:31:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-22 01:31:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:31:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:31:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:31:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:31:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:31:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:31:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:31:55,351 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 01:31:55,490 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:31:55,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:31:56,196 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:31:56,356 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:31:56,356 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 01:31:56,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:31:56 BoogieIcfgContainer [2022-11-22 01:31:56,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:31:56,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:31:56,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:31:56,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:31:56,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:31:54" (1/3) ... [2022-11-22 01:31:56,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b2bf79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:31:56, skipping insertion in model container [2022-11-22 01:31:56,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:55" (2/3) ... [2022-11-22 01:31:56,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b2bf79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:31:56, skipping insertion in model container [2022-11-22 01:31:56,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:31:56" (3/3) ... [2022-11-22 01:31:56,373 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2022-11-22 01:31:56,383 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:31:56,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:31:56,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-11-22 01:31:56,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:31:56,517 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-22 01:31:56,571 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:31:56,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 362 transitions, 748 flow [2022-11-22 01:31:56,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 362 transitions, 748 flow [2022-11-22 01:31:56,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 362 transitions, 748 flow [2022-11-22 01:31:56,766 INFO L130 PetriNetUnfolder]: 20/359 cut-off events. [2022-11-22 01:31:56,766 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-22 01:31:56,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 359 events. 20/359 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 437 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 284. Up to 3 conditions per place. [2022-11-22 01:31:56,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 9382 [2022-11-22 01:34:08,113 INFO L134 LiptonReduction]: Checked pairs total: 61515 [2022-11-22 01:34:08,113 INFO L136 LiptonReduction]: Total number of compositions: 428 [2022-11-22 01:34:08,122 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 99 transitions, 222 flow [2022-11-22 01:34:09,365 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27076 states, 25734 states have (on average 4.32983601461102) internal successors, (111424), 27075 states have internal predecessors, (111424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:09,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:34:09,390 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;@2ea6324e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:34:09,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-11-22 01:34:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 27076 states, 25734 states have (on average 4.32983601461102) internal successors, (111424), 27075 states have internal predecessors, (111424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 01:34:09,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:09,463 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 01:34:09,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1452, now seen corresponding path program 1 times [2022-11-22 01:34:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:09,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079574866] [2022-11-22 01:34:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:09,716 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 01:34:09,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:09,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079574866] [2022-11-22 01:34:09,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079574866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:09,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:09,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 01:34:09,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777700121] [2022-11-22 01:34:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:34:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:09,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:34:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:34:09,814 INFO L87 Difference]: Start difference. First operand has 27076 states, 25734 states have (on average 4.32983601461102) internal successors, (111424), 27075 states have internal predecessors, (111424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:10,076 INFO L93 Difference]: Finished difference Result 3066 states and 12103 transitions. [2022-11-22 01:34:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:34:10,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-22 01:34:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:10,128 INFO L225 Difference]: With dead ends: 3066 [2022-11-22 01:34:10,128 INFO L226 Difference]: Without dead ends: 3035 [2022-11-22 01:34:10,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:34:10,133 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:10,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:34:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-11-22 01:34:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3035. [2022-11-22 01:34:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3029 states have (on average 3.966985803895675) internal successors, (12016), 3034 states have internal predecessors, (12016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 12016 transitions. [2022-11-22 01:34:10,463 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 12016 transitions. Word has length 1 [2022-11-22 01:34:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:10,465 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 12016 transitions. [2022-11-22 01:34:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 12016 transitions. [2022-11-22 01:34:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:34:10,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:10,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:10,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:34:10,474 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash 733088970, now seen corresponding path program 1 times [2022-11-22 01:34:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:10,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048271813] [2022-11-22 01:34:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:11,096 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 01:34:11,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:11,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048271813] [2022-11-22 01:34:11,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048271813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:11,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:11,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:34:11,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109048410] [2022-11-22 01:34:11,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:11,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:34:11,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:11,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:34:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:34:11,100 INFO L87 Difference]: Start difference. First operand 3035 states and 12016 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:11,608 INFO L93 Difference]: Finished difference Result 3861 states and 15023 transitions. [2022-11-22 01:34:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:34:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:34:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:11,644 INFO L225 Difference]: With dead ends: 3861 [2022-11-22 01:34:11,644 INFO L226 Difference]: Without dead ends: 3861 [2022-11-22 01:34:11,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:34:11,646 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 94 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:11,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 101 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:34:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-11-22 01:34:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3551. [2022-11-22 01:34:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 3545 states have (on average 3.9675599435825104) internal successors, (14065), 3550 states have internal predecessors, (14065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 14065 transitions. [2022-11-22 01:34:11,899 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 14065 transitions. Word has length 13 [2022-11-22 01:34:11,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:11,900 INFO L495 AbstractCegarLoop]: Abstraction has 3551 states and 14065 transitions. [2022-11-22 01:34:11,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 14065 transitions. [2022-11-22 01:34:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:34:11,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:11,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:34:11,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 28749605, now seen corresponding path program 1 times [2022-11-22 01:34:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:11,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114081508] [2022-11-22 01:34:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:12,702 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 01:34:12,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:12,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114081508] [2022-11-22 01:34:12,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114081508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:12,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:12,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230332682] [2022-11-22 01:34:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:34:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:34:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:12,705 INFO L87 Difference]: Start difference. First operand 3551 states and 14065 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:13,780 INFO L93 Difference]: Finished difference Result 5056 states and 19981 transitions. [2022-11-22 01:34:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:34:13,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:34:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:13,820 INFO L225 Difference]: With dead ends: 5056 [2022-11-22 01:34:13,821 INFO L226 Difference]: Without dead ends: 5056 [2022-11-22 01:34:13,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:13,822 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 80 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:13,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 72 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:34:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-11-22 01:34:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 4651. [2022-11-22 01:34:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4651 states, 4645 states have (on average 4.022604951560818) internal successors, (18685), 4650 states have internal predecessors, (18685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 18685 transitions. [2022-11-22 01:34:14,059 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 18685 transitions. Word has length 15 [2022-11-22 01:34:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:14,060 INFO L495 AbstractCegarLoop]: Abstraction has 4651 states and 18685 transitions. [2022-11-22 01:34:14,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 18685 transitions. [2022-11-22 01:34:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 01:34:14,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:14,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:14,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:34:14,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1089886458, now seen corresponding path program 1 times [2022-11-22 01:34:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:14,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519210751] [2022-11-22 01:34:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:14,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:34:14,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:14,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519210751] [2022-11-22 01:34:14,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519210751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:14,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:14,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:14,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186193774] [2022-11-22 01:34:14,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:14,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:34:14,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:34:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:14,779 INFO L87 Difference]: Start difference. First operand 4651 states and 18685 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:16,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:16,335 INFO L93 Difference]: Finished difference Result 6658 states and 26882 transitions. [2022-11-22 01:34:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:34:16,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-22 01:34:16,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:16,386 INFO L225 Difference]: With dead ends: 6658 [2022-11-22 01:34:16,387 INFO L226 Difference]: Without dead ends: 6658 [2022-11-22 01:34:16,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:16,388 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:16,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 69 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 01:34:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2022-11-22 01:34:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 5356. [2022-11-22 01:34:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5350 states have (on average 4.031588785046729) internal successors, (21569), 5355 states have internal predecessors, (21569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 21569 transitions. [2022-11-22 01:34:16,695 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 21569 transitions. Word has length 16 [2022-11-22 01:34:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:16,697 INFO L495 AbstractCegarLoop]: Abstraction has 5356 states and 21569 transitions. [2022-11-22 01:34:16,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 21569 transitions. [2022-11-22 01:34:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:34:16,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:16,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:16,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:34:16,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1792962464, now seen corresponding path program 1 times [2022-11-22 01:34:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:16,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136044577] [2022-11-22 01:34:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:16,929 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 01:34:16,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136044577] [2022-11-22 01:34:16,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136044577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:16,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:16,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:34:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519998971] [2022-11-22 01:34:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:16,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:34:16,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:34:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:34:16,935 INFO L87 Difference]: Start difference. First operand 5356 states and 21569 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:17,323 INFO L93 Difference]: Finished difference Result 5421 states and 21335 transitions. [2022-11-22 01:34:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:34:17,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 01:34:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:17,353 INFO L225 Difference]: With dead ends: 5421 [2022-11-22 01:34:17,354 INFO L226 Difference]: Without dead ends: 5421 [2022-11-22 01:34:17,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:34:17,355 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 77 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:17,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 109 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:34:17,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5421 states. [2022-11-22 01:34:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5421 to 5349. [2022-11-22 01:34:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5349 states, 5343 states have (on average 3.964813775032753) internal successors, (21184), 5348 states have internal predecessors, (21184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5349 states to 5349 states and 21184 transitions. [2022-11-22 01:34:17,613 INFO L78 Accepts]: Start accepts. Automaton has 5349 states and 21184 transitions. Word has length 18 [2022-11-22 01:34:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:17,613 INFO L495 AbstractCegarLoop]: Abstraction has 5349 states and 21184 transitions. [2022-11-22 01:34:17,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5349 states and 21184 transitions. [2022-11-22 01:34:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 01:34:17,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:17,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:17,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:34:17,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1661325551, now seen corresponding path program 1 times [2022-11-22 01:34:17,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:17,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623980748] [2022-11-22 01:34:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:17,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:34:19,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623980748] [2022-11-22 01:34:19,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623980748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:19,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:19,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:34:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123510766] [2022-11-22 01:34:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:19,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:34:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:34:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:34:19,603 INFO L87 Difference]: Start difference. First operand 5349 states and 21184 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:20,994 INFO L93 Difference]: Finished difference Result 14267 states and 56792 transitions. [2022-11-22 01:34:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:34:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 01:34:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:21,140 INFO L225 Difference]: With dead ends: 14267 [2022-11-22 01:34:21,140 INFO L226 Difference]: Without dead ends: 14267 [2022-11-22 01:34:21,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:34:21,143 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 379 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:21,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:34:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14267 states. [2022-11-22 01:34:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 6490. [2022-11-22 01:34:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6490 states, 6484 states have (on average 4.069555829734732) internal successors, (26387), 6489 states have internal predecessors, (26387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6490 states to 6490 states and 26387 transitions. [2022-11-22 01:34:21,463 INFO L78 Accepts]: Start accepts. Automaton has 6490 states and 26387 transitions. Word has length 21 [2022-11-22 01:34:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:21,464 INFO L495 AbstractCegarLoop]: Abstraction has 6490 states and 26387 transitions. [2022-11-22 01:34:21,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6490 states and 26387 transitions. [2022-11-22 01:34:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 01:34:21,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:21,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:34:21,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2036737308, now seen corresponding path program 1 times [2022-11-22 01:34:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956162810] [2022-11-22 01:34:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:34:23,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:23,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956162810] [2022-11-22 01:34:23,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956162810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:23,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:23,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:34:23,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644202707] [2022-11-22 01:34:23,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:23,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:34:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:34:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:34:23,047 INFO L87 Difference]: Start difference. First operand 6490 states and 26387 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:24,484 INFO L93 Difference]: Finished difference Result 6105 states and 24725 transitions. [2022-11-22 01:34:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:34:24,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 01:34:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:24,516 INFO L225 Difference]: With dead ends: 6105 [2022-11-22 01:34:24,517 INFO L226 Difference]: Without dead ends: 6105 [2022-11-22 01:34:24,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:34:24,518 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 266 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:24,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 84 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:34:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-11-22 01:34:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 4565. [2022-11-22 01:34:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4562 states have (on average 3.9625164401578257) internal successors, (18077), 4564 states have internal predecessors, (18077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 18077 transitions. [2022-11-22 01:34:24,679 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 18077 transitions. Word has length 21 [2022-11-22 01:34:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:24,680 INFO L495 AbstractCegarLoop]: Abstraction has 4565 states and 18077 transitions. [2022-11-22 01:34:24,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 18077 transitions. [2022-11-22 01:34:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 01:34:24,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:24,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:24,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:34:24,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1365641191, now seen corresponding path program 2 times [2022-11-22 01:34:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534144757] [2022-11-22 01:34:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:34:26,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:26,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534144757] [2022-11-22 01:34:26,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534144757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:26,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:26,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:34:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234666493] [2022-11-22 01:34:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:26,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:34:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:34:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:34:26,201 INFO L87 Difference]: Start difference. First operand 4565 states and 18077 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:27,653 INFO L93 Difference]: Finished difference Result 11314 states and 44950 transitions. [2022-11-22 01:34:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:34:27,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 01:34:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:27,726 INFO L225 Difference]: With dead ends: 11314 [2022-11-22 01:34:27,727 INFO L226 Difference]: Without dead ends: 11314 [2022-11-22 01:34:27,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:34:27,728 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 284 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:27,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 113 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:34:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11314 states. [2022-11-22 01:34:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11314 to 4639. [2022-11-22 01:34:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 4636 states have (on average 3.9710957722174287) internal successors, (18410), 4638 states have internal predecessors, (18410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 18410 transitions. [2022-11-22 01:34:28,009 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 18410 transitions. Word has length 21 [2022-11-22 01:34:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:28,010 INFO L495 AbstractCegarLoop]: Abstraction has 4639 states and 18410 transitions. [2022-11-22 01:34:28,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 18410 transitions. [2022-11-22 01:34:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:34:28,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:28,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:28,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:34:28,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1222210352, now seen corresponding path program 1 times [2022-11-22 01:34:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:28,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724187754] [2022-11-22 01:34:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:34:28,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:28,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724187754] [2022-11-22 01:34:28,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724187754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:28,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:28,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089616575] [2022-11-22 01:34:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:34:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:34:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:28,425 INFO L87 Difference]: Start difference. First operand 4639 states and 18410 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:29,538 INFO L93 Difference]: Finished difference Result 5044 states and 20034 transitions. [2022-11-22 01:34:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:34:29,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 01:34:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:29,571 INFO L225 Difference]: With dead ends: 5044 [2022-11-22 01:34:29,571 INFO L226 Difference]: Without dead ends: 5044 [2022-11-22 01:34:29,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:29,573 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 56 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:29,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 68 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:34:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5044 states. [2022-11-22 01:34:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 5044. [2022-11-22 01:34:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5044 states, 5041 states have (on average 3.9742114659789722) internal successors, (20034), 5043 states have internal predecessors, (20034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 20034 transitions. [2022-11-22 01:34:29,775 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 20034 transitions. Word has length 22 [2022-11-22 01:34:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:29,776 INFO L495 AbstractCegarLoop]: Abstraction has 5044 states and 20034 transitions. [2022-11-22 01:34:29,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 20034 transitions. [2022-11-22 01:34:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:34:29,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:29,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:34:29,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1602651730, now seen corresponding path program 3 times [2022-11-22 01:34:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:29,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052391338] [2022-11-22 01:34:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:34:30,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:30,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052391338] [2022-11-22 01:34:30,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052391338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:34:30,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514728019] [2022-11-22 01:34:30,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:34:30,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:34:30,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:34:30,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:34:30,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:34:40,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:34:40,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:34:40,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:34:40,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:34:40,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:34:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:34:40,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514728019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:34:40,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436066792] [2022-11-22 01:34:40,431 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:34:40,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:34:40,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-22 01:34:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752642761] [2022-11-22 01:34:40,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:34:40,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:34:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:34:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:34:40,442 INFO L87 Difference]: Start difference. First operand 5044 states and 20034 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:41,819 INFO L93 Difference]: Finished difference Result 11703 states and 45718 transitions. [2022-11-22 01:34:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:34:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 01:34:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:41,881 INFO L225 Difference]: With dead ends: 11703 [2022-11-22 01:34:41,881 INFO L226 Difference]: Without dead ends: 11703 [2022-11-22 01:34:41,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:34:41,882 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 416 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:41,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 643 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:34:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2022-11-22 01:34:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 9419. [2022-11-22 01:34:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9419 states, 9416 states have (on average 4.076146983857265) internal successors, (38381), 9418 states have internal predecessors, (38381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9419 states to 9419 states and 38381 transitions. [2022-11-22 01:34:42,329 INFO L78 Accepts]: Start accepts. Automaton has 9419 states and 38381 transitions. Word has length 23 [2022-11-22 01:34:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:42,330 INFO L495 AbstractCegarLoop]: Abstraction has 9419 states and 38381 transitions. [2022-11-22 01:34:42,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9419 states and 38381 transitions. [2022-11-22 01:34:42,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 01:34:42,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:42,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:42,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:34:42,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:34:42,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1861945710, now seen corresponding path program 1 times [2022-11-22 01:34:42,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:42,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174453388] [2022-11-22 01:34:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:42,969 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 01:34:42,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:42,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174453388] [2022-11-22 01:34:42,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174453388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:42,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:34:42,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:34:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174576085] [2022-11-22 01:34:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:34:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:34:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:42,971 INFO L87 Difference]: Start difference. First operand 9419 states and 38381 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:34:44,632 INFO L93 Difference]: Finished difference Result 9494 states and 38591 transitions. [2022-11-22 01:34:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:34:44,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-22 01:34:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:34:44,672 INFO L225 Difference]: With dead ends: 9494 [2022-11-22 01:34:44,672 INFO L226 Difference]: Without dead ends: 7217 [2022-11-22 01:34:44,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:34:44,673 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:34:44,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 81 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:34:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7217 states. [2022-11-22 01:34:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7217 to 7217. [2022-11-22 01:34:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7217 states, 7214 states have (on average 3.861796506792348) internal successors, (27859), 7216 states have internal predecessors, (27859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7217 states to 7217 states and 27859 transitions. [2022-11-22 01:34:45,081 INFO L78 Accepts]: Start accepts. Automaton has 7217 states and 27859 transitions. Word has length 25 [2022-11-22 01:34:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:34:45,081 INFO L495 AbstractCegarLoop]: Abstraction has 7217 states and 27859 transitions. [2022-11-22 01:34:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7217 states and 27859 transitions. [2022-11-22 01:34:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 01:34:45,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:34:45,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:34:45,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:34:45,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:34:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:34:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1957365290, now seen corresponding path program 4 times [2022-11-22 01:34:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:34:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053825066] [2022-11-22 01:34:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:34:45,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:34:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:34:46,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:34:46,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053825066] [2022-11-22 01:34:46,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053825066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:34:46,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067698882] [2022-11-22 01:34:46,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:34:46,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:34:46,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:34:46,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:34:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:34:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:34:47,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-22 01:34:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:34:47,349 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-22 01:34:47,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-22 01:34:47,453 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:34:47,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 01:34:47,550 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-22 01:34:47,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:34:47,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 01:34:48,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 01:34:48,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-22 01:34:48,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-22 01:34:48,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:34:48,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 116 [2022-11-22 01:34:48,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2022-11-22 01:34:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:34:52,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:34:52,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067698882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:34:52,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:34:52,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 24 [2022-11-22 01:34:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838548767] [2022-11-22 01:34:52,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:34:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:34:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:34:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:34:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=519, Unknown=1, NotChecked=0, Total=650 [2022-11-22 01:34:52,682 INFO L87 Difference]: Start difference. First operand 7217 states and 27859 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:34:58,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:00,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:02,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:04,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:10,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:12,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:14,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:17,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:19,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:21,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:23,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:25,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:35:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:25,479 INFO L93 Difference]: Finished difference Result 11556 states and 45007 transitions. [2022-11-22 01:35:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:35:25,480 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-22 01:35:25,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:25,533 INFO L225 Difference]: With dead ends: 11556 [2022-11-22 01:35:25,534 INFO L226 Difference]: Without dead ends: 11371 [2022-11-22 01:35:25,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=354, Invalid=975, Unknown=3, NotChecked=0, Total=1332 [2022-11-22 01:35:25,535 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 352 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 52 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:25,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 177 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 640 Invalid, 12 Unknown, 0 Unchecked, 26.2s Time] [2022-11-22 01:35:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2022-11-22 01:35:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 7143. [2022-11-22 01:35:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7143 states, 7140 states have (on average 3.8603641456582634) internal successors, (27563), 7142 states have internal predecessors, (27563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 27563 transitions. [2022-11-22 01:35:25,801 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 27563 transitions. Word has length 26 [2022-11-22 01:35:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:25,802 INFO L495 AbstractCegarLoop]: Abstraction has 7143 states and 27563 transitions. [2022-11-22 01:35:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 27563 transitions. [2022-11-22 01:35:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:35:25,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:25,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:25,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:35:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:35:26,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:35:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash -628047477, now seen corresponding path program 1 times [2022-11-22 01:35:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:26,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68917645] [2022-11-22 01:35:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:35:27,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68917645] [2022-11-22 01:35:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68917645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:27,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:35:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566899645] [2022-11-22 01:35:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:35:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:35:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:35:27,140 INFO L87 Difference]: Start difference. First operand 7143 states and 27563 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:28,245 INFO L93 Difference]: Finished difference Result 14108 states and 53880 transitions. [2022-11-22 01:35:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:35:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-22 01:35:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:28,294 INFO L225 Difference]: With dead ends: 14108 [2022-11-22 01:35:28,294 INFO L226 Difference]: Without dead ends: 13664 [2022-11-22 01:35:28,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:35:28,295 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 297 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:28,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 93 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:35:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13664 states. [2022-11-22 01:35:28,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13664 to 9535. [2022-11-22 01:35:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9535 states, 9532 states have (on average 3.855434326479228) internal successors, (36750), 9534 states have internal predecessors, (36750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 36750 transitions. [2022-11-22 01:35:28,624 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 36750 transitions. Word has length 27 [2022-11-22 01:35:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:28,625 INFO L495 AbstractCegarLoop]: Abstraction has 9535 states and 36750 transitions. [2022-11-22 01:35:28,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 36750 transitions. [2022-11-22 01:35:28,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:35:28,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:28,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:28,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:35:28,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:35:28,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -460438991, now seen corresponding path program 2 times [2022-11-22 01:35:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:28,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588476478] [2022-11-22 01:35:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:35:29,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:29,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588476478] [2022-11-22 01:35:29,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588476478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:29,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:29,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:35:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756368830] [2022-11-22 01:35:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:29,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:35:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:35:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:35:29,511 INFO L87 Difference]: Start difference. First operand 9535 states and 36750 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:30,762 INFO L93 Difference]: Finished difference Result 15302 states and 59269 transitions. [2022-11-22 01:35:30,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:35:30,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-22 01:35:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:30,806 INFO L225 Difference]: With dead ends: 15302 [2022-11-22 01:35:30,806 INFO L226 Difference]: Without dead ends: 14858 [2022-11-22 01:35:30,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:35:30,806 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 222 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:30,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 121 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:35:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-11-22 01:35:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 9091. [2022-11-22 01:35:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9091 states, 9088 states have (on average 3.8687279929577465) internal successors, (35159), 9090 states have internal predecessors, (35159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9091 states to 9091 states and 35159 transitions. [2022-11-22 01:35:31,207 INFO L78 Accepts]: Start accepts. Automaton has 9091 states and 35159 transitions. Word has length 27 [2022-11-22 01:35:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:31,207 INFO L495 AbstractCegarLoop]: Abstraction has 9091 states and 35159 transitions. [2022-11-22 01:35:31,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 9091 states and 35159 transitions. [2022-11-22 01:35:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-22 01:35:31,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:31,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:31,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:35:31,220 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:35:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash 709164939, now seen corresponding path program 1 times [2022-11-22 01:35:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:31,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157758610] [2022-11-22 01:35:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:31,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:35:31,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:31,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157758610] [2022-11-22 01:35:31,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157758610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:35:31,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624150855] [2022-11-22 01:35:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:31,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:35:31,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:35:31,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:35:31,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:35:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:31,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:35:31,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:35:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:35:31,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:35:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:35:31,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624150855] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:35:31,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:35:31,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-11-22 01:35:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630749668] [2022-11-22 01:35:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:35:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:35:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:35:31,803 INFO L87 Difference]: Start difference. First operand 9091 states and 35159 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:32,071 INFO L93 Difference]: Finished difference Result 9091 states and 34859 transitions. [2022-11-22 01:35:32,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:35:32,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-22 01:35:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:32,095 INFO L225 Difference]: With dead ends: 9091 [2022-11-22 01:35:32,095 INFO L226 Difference]: Without dead ends: 9091 [2022-11-22 01:35:32,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:35:32,098 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 133 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:32,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 40 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:35:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9091 states. [2022-11-22 01:35:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9091 to 9091. [2022-11-22 01:35:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9091 states, 9088 states have (on average 3.835717429577465) internal successors, (34859), 9090 states have internal predecessors, (34859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9091 states to 9091 states and 34859 transitions. [2022-11-22 01:35:32,350 INFO L78 Accepts]: Start accepts. Automaton has 9091 states and 34859 transitions. Word has length 31 [2022-11-22 01:35:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:32,351 INFO L495 AbstractCegarLoop]: Abstraction has 9091 states and 34859 transitions. [2022-11-22 01:35:32,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:35:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 9091 states and 34859 transitions. [2022-11-22 01:35:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-22 01:35:32,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:32,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:32,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:35:32,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:35:32,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:35:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:32,570 INFO L85 PathProgramCache]: Analyzing trace with hash -874626508, now seen corresponding path program 3 times [2022-11-22 01:35:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:32,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151567895] [2022-11-22 01:35:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:32,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:35:34,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:34,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151567895] [2022-11-22 01:35:34,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151567895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:35:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858530486] [2022-11-22 01:35:34,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:35:34,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:35:34,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:35:34,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:35:34,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:43:30,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:43:30,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:43:30,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-22 01:43:30,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:30,608 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-22 01:43:30,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-22 01:43:30,683 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 01:43:30,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 01:43:31,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 01:43:31,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 01:43:31,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-22 01:43:31,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-22 01:43:31,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:43:31,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:43:31,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:43:31,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:43:31,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:43:32,115 INFO L321 Elim1Store]: treesize reduction 104, result has 48.3 percent of original size [2022-11-22 01:43:32,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 186 treesize of output 184 [2022-11-22 01:43:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 01:43:32,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:10,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:44:10,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:44:10,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:44:10,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:44:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:44:15,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858530486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1892394861] [2022-11-22 01:44:15,234 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:44:15,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:15,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 36 [2022-11-22 01:44:15,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540752168] [2022-11-22 01:44:15,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:15,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-22 01:44:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-22 01:44:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1162, Unknown=2, NotChecked=0, Total=1332 [2022-11-22 01:44:15,237 INFO L87 Difference]: Start difference. First operand 9091 states and 34859 transitions. Second operand has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:35,505 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 152 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:44:40,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 01:44:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:47,991 INFO L93 Difference]: Finished difference Result 16427 states and 63884 transitions. [2022-11-22 01:44:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 01:44:47,992 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-22 01:44:47,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:48,038 INFO L225 Difference]: With dead ends: 16427 [2022-11-22 01:44:48,038 INFO L226 Difference]: Without dead ends: 16242 [2022-11-22 01:44:48,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=583, Invalid=2385, Unknown=2, NotChecked=0, Total=2970 [2022-11-22 01:44:48,040 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1018 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:48,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 670 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2124 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-11-22 01:44:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16242 states. [2022-11-22 01:44:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16242 to 8499. [2022-11-22 01:44:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8499 states, 8496 states have (on average 3.824270244821092) internal successors, (32491), 8498 states have internal predecessors, (32491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 32491 transitions. [2022-11-22 01:44:48,387 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 32491 transitions. Word has length 32 [2022-11-22 01:44:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:48,387 INFO L495 AbstractCegarLoop]: Abstraction has 8499 states and 32491 transitions. [2022-11-22 01:44:48,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 37 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 32491 transitions. [2022-11-22 01:44:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 01:44:48,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:48,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:48,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:48,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 01:44:48,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:44:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2058156531, now seen corresponding path program 1 times [2022-11-22 01:44:48,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:48,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460247551] [2022-11-22 01:44:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:44:48,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:48,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460247551] [2022-11-22 01:44:48,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460247551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:48,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355395365] [2022-11-22 01:44:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:48,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:48,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:48,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:44:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:49,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:44:49,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:44:49,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:44:49,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355395365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [466213677] [2022-11-22 01:44:49,498 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:44:49,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:49,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-22 01:44:49,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422871923] [2022-11-22 01:44:49,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:49,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:44:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:44:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:44:49,501 INFO L87 Difference]: Start difference. First operand 8499 states and 32491 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:50,519 INFO L93 Difference]: Finished difference Result 6541 states and 24799 transitions. [2022-11-22 01:44:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:44:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-22 01:44:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:50,537 INFO L225 Difference]: With dead ends: 6541 [2022-11-22 01:44:50,537 INFO L226 Difference]: Without dead ends: 6541 [2022-11-22 01:44:50,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:44:50,538 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 329 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:50,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 247 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:44:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2022-11-22 01:44:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 6516. [2022-11-22 01:44:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6516 states, 6513 states have (on average 3.799938584369722) internal successors, (24749), 6515 states have internal predecessors, (24749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6516 states to 6516 states and 24749 transitions. [2022-11-22 01:44:50,673 INFO L78 Accepts]: Start accepts. Automaton has 6516 states and 24749 transitions. Word has length 34 [2022-11-22 01:44:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:50,674 INFO L495 AbstractCegarLoop]: Abstraction has 6516 states and 24749 transitions. [2022-11-22 01:44:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6516 states and 24749 transitions. [2022-11-22 01:44:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 01:44:50,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:50,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:50,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:50,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:50,890 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:44:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1191308271, now seen corresponding path program 2 times [2022-11-22 01:44:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:50,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776397363] [2022-11-22 01:44:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:44:52,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:52,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776397363] [2022-11-22 01:44:52,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776397363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:52,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471540186] [2022-11-22 01:44:52,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:44:52,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:52,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:52,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:52,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:44:52,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 01:44:52,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:44:52,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-22 01:44:52,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:52,741 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-22 01:44:52,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-22 01:44:52,794 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:44:52,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 01:44:52,884 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-22 01:44:52,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:44:53,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 01:44:53,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 01:44:53,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:44:53,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-22 01:44:53,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:44:53,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-22 01:44:53,616 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-11-22 01:44:53,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 116 [2022-11-22 01:44:53,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2022-11-22 01:44:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:44:53,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:55,988 INFO L321 Elim1Store]: treesize reduction 740, result has 12.2 percent of original size [2022-11-22 01:44:55,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 84 treesize of output 120 [2022-11-22 01:44:56,015 INFO L321 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2022-11-22 01:44:56,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 248 treesize of output 162 [2022-11-22 01:44:56,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-22 01:44:56,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 78 [2022-11-22 01:44:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:44:56,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471540186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:56,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385015967] [2022-11-22 01:44:56,471 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:44:56,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:56,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2022-11-22 01:44:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601589645] [2022-11-22 01:44:56,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:56,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 01:44:56,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 01:44:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=559, Unknown=20, NotChecked=0, Total=702 [2022-11-22 01:44:56,474 INFO L87 Difference]: Start difference. First operand 6516 states and 24749 transitions. Second operand has 27 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 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 01:45:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:04,161 INFO L93 Difference]: Finished difference Result 10151 states and 38517 transitions. [2022-11-22 01:45:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-22 01:45:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 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 37 [2022-11-22 01:45:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:04,188 INFO L225 Difference]: With dead ends: 10151 [2022-11-22 01:45:04,188 INFO L226 Difference]: Without dead ends: 10003 [2022-11-22 01:45:04,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=586, Invalid=1650, Unknown=20, NotChecked=0, Total=2256 [2022-11-22 01:45:04,189 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 416 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:04,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 438 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 01:45:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10003 states. [2022-11-22 01:45:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10003 to 5961. [2022-11-22 01:45:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5959 states have (on average 3.7868769927840242) internal successors, (22566), 5960 states have internal predecessors, (22566), 0 states have call successors, (0), 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 01:45:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 22566 transitions. [2022-11-22 01:45:04,336 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 22566 transitions. Word has length 37 [2022-11-22 01:45:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:04,336 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 22566 transitions. [2022-11-22 01:45:04,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 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 01:45:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 22566 transitions. [2022-11-22 01:45:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-22 01:45:04,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:04,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:04,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:04,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 01:45:04,546 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:45:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1296890149, now seen corresponding path program 1 times [2022-11-22 01:45:04,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:04,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21946279] [2022-11-22 01:45:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:45:06,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:06,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21946279] [2022-11-22 01:45:06,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21946279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:06,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451799379] [2022-11-22 01:45:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:06,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:06,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:06,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:45:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:06,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-22 01:45:06,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:06,601 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-22 01:45:06,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-22 01:45:06,727 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:45:06,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 01:45:06,833 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-22 01:45:06,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:45:07,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 01:45:07,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 01:45:07,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-22 01:45:07,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-22 01:45:08,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:08,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 37 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 155 [2022-11-22 01:45:08,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 128 [2022-11-22 01:45:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 01:45:08,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:08,561 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 (* c_thread2Thread1of1ForFork2_~i~1 4))) (let ((.cse2 (store |c_#race| c_~A~0.base (store (store (store (store (select |c_#race| c_~A~0.base) (+ c_~A~0.offset .cse3) 0) (+ c_~A~0.offset .cse3 1) 0) (+ c_~A~0.offset 2 .cse3) 0) (+ c_~A~0.offset 3 .cse3) 0)))) (store .cse2 c_~B~0.base (store (store (store (store (select .cse2 c_~B~0.base) (+ c_~B~0.offset .cse3) 0) (+ c_~B~0.offset .cse3 1) 0) (+ 2 c_~B~0.offset .cse3) 0) (+ 3 c_~B~0.offset .cse3) 0))))) (.cse1 (* c_thread1Thread1of1ForFork1_~i~0 4))) (and (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 c_~B~0.offset 1)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ 2 .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 3 c_~B~0.offset)) 0)))) is different from false [2022-11-22 01:45:08,985 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread1Thread1of1ForFork1_~i~0 4))) (let ((.cse2 (+ .cse1 3 c_~B~0.offset))) (let ((.cse0 (let ((.cse4 (* c_thread2Thread1of1ForFork2_~i~1 4))) (let ((.cse3 (let ((.cse5 (store |c_#race| c_~B~0.base (store (select |c_#race| c_~B~0.base) .cse2 0)))) (store .cse5 c_~A~0.base (store (store (store (store (select .cse5 c_~A~0.base) (+ c_~A~0.offset .cse4) 0) (+ c_~A~0.offset .cse4 1) 0) (+ c_~A~0.offset 2 .cse4) 0) (+ c_~A~0.offset 3 .cse4) 0))))) (store .cse3 c_~B~0.base (store (store (store (store (select .cse3 c_~B~0.base) (+ c_~B~0.offset .cse4) 0) (+ c_~B~0.offset .cse4 1) 0) (+ 2 c_~B~0.offset .cse4) 0) (+ 3 c_~B~0.offset .cse4) 0)))))) (and (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ 2 .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse2) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 c_~B~0.offset 1)) 0)))))) is different from false [2022-11-22 01:45:09,325 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread1Thread1of1ForFork1_~i~0 4))) (let ((.cse2 (+ 2 .cse1 c_~B~0.offset)) (.cse3 (+ .cse1 3 c_~B~0.offset))) (let ((.cse0 (let ((.cse5 (* c_thread2Thread1of1ForFork2_~i~1 4))) (let ((.cse4 (let ((.cse6 (store |c_#race| c_~B~0.base (store (store (select |c_#race| c_~B~0.base) .cse2 0) .cse3 0)))) (store .cse6 c_~A~0.base (store (store (store (store (select .cse6 c_~A~0.base) (+ c_~A~0.offset .cse5) 0) (+ c_~A~0.offset .cse5 1) 0) (+ c_~A~0.offset 2 .cse5) 0) (+ c_~A~0.offset 3 .cse5) 0))))) (store .cse4 c_~B~0.base (store (store (store (store (select .cse4 c_~B~0.base) (+ c_~B~0.offset .cse5) 0) (+ c_~B~0.offset .cse5 1) 0) (+ 2 c_~B~0.offset .cse5) 0) (+ 3 c_~B~0.offset .cse5) 0)))))) (and (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse2) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) (+ .cse1 c_~B~0.offset 1)) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse3) 0)))))) is different from false [2022-11-22 01:45:12,544 INFO L321 Elim1Store]: treesize reduction 3278, result has 4.5 percent of original size [2022-11-22 01:45:12,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 12 case distinctions, treesize of input 266 treesize of output 168 [2022-11-22 01:45:12,618 INFO L321 Elim1Store]: treesize reduction 732, result has 0.1 percent of original size [2022-11-22 01:45:12,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 70 [2022-11-22 01:45:12,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:45:12,857 INFO L321 Elim1Store]: treesize reduction 3431, result has 0.0 percent of original size [2022-11-22 01:45:12,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 12 case distinctions, treesize of input 267 treesize of output 1 [2022-11-22 01:45:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 2 not checked. [2022-11-22 01:45:13,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451799379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:13,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1532856398] [2022-11-22 01:45:13,142 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:45:13,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:13,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 33 [2022-11-22 01:45:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573443778] [2022-11-22 01:45:13,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:13,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-22 01:45:13,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-22 01:45:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=759, Unknown=13, NotChecked=180, Total=1122 [2022-11-22 01:45:13,144 INFO L87 Difference]: Start difference. First operand 5961 states and 22566 transitions. Second operand has 34 states, 33 states have (on average 3.393939393939394) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 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 01:45:24,503 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse15 (* c_thread1Thread1of1ForFork1_~i~0 4)) (.cse18 (* c_thread2Thread1of1ForFork2_~i~1 4))) (let ((.cse7 (+ c_~B~0.offset .cse18)) (.cse8 (+ c_~B~0.offset .cse18 1)) (.cse9 (+ 2 c_~B~0.offset .cse18)) (.cse10 (+ 3 c_~B~0.offset .cse18)) (.cse11 (+ c_~A~0.offset .cse18)) (.cse12 (+ c_~A~0.offset .cse18 1)) (.cse13 (+ c_~A~0.offset 2 .cse18)) (.cse14 (+ c_~A~0.offset 3 .cse18)) (.cse3 (+ .cse15 c_~B~0.offset 1)) (.cse5 (+ 2 .cse15 c_~B~0.offset)) (.cse1 (+ .cse15 3 c_~B~0.offset))) (let ((.cse0 (let ((.cse16 (let ((.cse17 (store |c_#race| c_~B~0.base (store (store (store (select |c_#race| c_~B~0.base) .cse3 0) .cse5 0) .cse1 0)))) (store .cse17 c_~A~0.base (store (store (store (store (select .cse17 c_~A~0.base) .cse11 0) .cse12 0) .cse13 0) .cse14 0))))) (store .cse16 c_~B~0.base (store (store (store (store (select .cse16 c_~B~0.base) .cse7 0) .cse8 0) .cse9 0) .cse10 0)))) (.cse4 (+ .cse15 c_~B~0.offset)) (.cse2 (let ((.cse6 (store |c_#race| c_~A~0.base (store (store (store (store (select |c_#race| c_~A~0.base) .cse11 0) .cse12 0) .cse13 0) .cse14 0)))) (store .cse6 c_~B~0.base (store (store (store (store (select .cse6 c_~B~0.base) .cse7 0) .cse8 0) .cse9 0) .cse10 0))))) (and (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse1) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse2 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse3) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse0 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse4) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse2 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse5) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse2 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse4) 0)) (forall ((v_ArrVal_2641 (Array Int Int))) (= (select (select (store .cse2 c_~C~0.base v_ArrVal_2641) c_~B~0.base) .cse1) 0)))))) is different from false [2022-11-22 01:45:49,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 01:45:54,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 01:45:57,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 01:46:03,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-22 01:46:11,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:46:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:14,143 INFO L93 Difference]: Finished difference Result 21971 states and 84936 transitions. [2022-11-22 01:46:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-22 01:46:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.393939393939394) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 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 43 [2022-11-22 01:46:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:14,209 INFO L225 Difference]: With dead ends: 21971 [2022-11-22 01:46:14,210 INFO L226 Difference]: Without dead ends: 21934 [2022-11-22 01:46:14,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 66 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=777, Invalid=3361, Unknown=38, NotChecked=516, Total=4692 [2022-11-22 01:46:14,211 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 800 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 154 mSolverCounterUnsat, 192 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 3760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 192 IncrementalHoareTripleChecker+Unknown, 930 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:14,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 753 Invalid, 3760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2484 Invalid, 192 Unknown, 930 Unchecked, 38.7s Time] [2022-11-22 01:46:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21934 states. [2022-11-22 01:46:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21934 to 12495. [2022-11-22 01:46:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12495 states, 12493 states have (on average 3.9639798287040744) internal successors, (49522), 12494 states have internal predecessors, (49522), 0 states have call successors, (0), 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 01:46:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12495 states to 12495 states and 49522 transitions. [2022-11-22 01:46:14,661 INFO L78 Accepts]: Start accepts. Automaton has 12495 states and 49522 transitions. Word has length 43 [2022-11-22 01:46:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:14,662 INFO L495 AbstractCegarLoop]: Abstraction has 12495 states and 49522 transitions. [2022-11-22 01:46:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.393939393939394) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 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 01:46:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12495 states and 49522 transitions. [2022-11-22 01:46:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-22 01:46:14,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:14,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:46:14,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:46:14,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:14,880 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-22 01:46:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1296139639, now seen corresponding path program 2 times [2022-11-22 01:46:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:14,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959355758] [2022-11-22 01:46:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:46:16,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959355758] [2022-11-22 01:46:16,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959355758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:46:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961219036] [2022-11-22 01:46:16,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:46:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:46:16,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:46:16,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e17f7e21-4f43-41b5-850c-ca76e1a4534a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:46:16,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 01:46:16,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:46:16,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-22 01:46:16,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:46:17,028 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-22 01:46:17,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-22 01:46:17,065 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:46:17,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 01:46:17,134 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-22 01:46:17,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:46:17,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 01:46:17,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 01:46:17,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:46:17,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-22 01:46:17,709 INFO L321 Elim1Store]: treesize reduction 527, result has 6.4 percent of original size [2022-11-22 01:46:17,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 145 [2022-11-22 01:46:17,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 123 [2022-11-22 01:46:17,931 INFO L321 Elim1Store]: treesize reduction 289, result has 14.2 percent of original size [2022-11-22 01:46:17,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 31 case distinctions, treesize of input 146 treesize of output 175 [2022-11-22 01:46:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 01:46:18,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:46:26,465 INFO L321 Elim1Store]: treesize reduction 2652, result has 5.0 percent of original size [2022-11-22 01:46:26,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 11 case distinctions, treesize of input 234 treesize of output 155 [2022-11-22 01:46:26,520 INFO L321 Elim1Store]: treesize reduction 599, result has 0.2 percent of original size [2022-11-22 01:46:26,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 170 treesize of output 66 [2022-11-22 01:46:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 01:46:26,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961219036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:46:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [914195859] [2022-11-22 01:46:26,763 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:46:26,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:46:26,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-11-22 01:46:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502435512] [2022-11-22 01:46:26,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:46:26,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-22 01:46:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-22 01:46:26,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=633, Unknown=2, NotChecked=0, Total=756 [2022-11-22 01:46:26,766 INFO L87 Difference]: Start difference. First operand 12495 states and 49522 transitions. Second operand has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 28 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)