./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0 --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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- 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-e04fb08 [2022-11-16 15:52:38,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:52:38,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:52:38,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:52:38,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:52:38,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:52:38,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:52:38,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:52:38,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:52:38,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:52:38,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:52:38,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:52:38,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:52:38,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:52:38,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:52:38,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:52:38,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:52:38,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:52:38,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:52:38,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:52:38,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:52:38,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:52:38,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:52:38,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:52:38,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:52:38,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:52:38,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:52:38,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:52:38,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:52:38,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:52:38,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:52:38,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:52:38,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:52:38,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:52:38,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:52:38,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:52:38,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:52:38,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:52:38,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:52:38,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:52:38,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:52:38,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-16 15:52:38,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:52:38,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:52:38,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:52:38,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:52:38,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:52:38,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:52:38,936 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:52:38,936 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:52:38,936 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:52:38,936 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:52:38,937 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:52:38,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:52:38,938 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:52:38,938 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:52:38,938 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:52:38,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:52:38,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:52:38,939 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:52:38,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:52:38,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 15:52:38,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 15:52:38,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:52:38,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 15:52:38,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:52:38,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:52:38,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:52:38,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:52:38,942 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 15:52:38,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 15:52:38,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:52:38,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:52:38,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:52:38,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:52:38,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:52:38,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:38,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:52:38,944 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:52:38,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:52:38,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:52:38,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:52:38,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:52:38,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:52:38,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:52:38,946 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_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-16 15:52:39,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:52:39,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:52:39,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:52:39,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:52:39,265 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:52:39,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-16 15:52:39,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/data/95bcc9d25/263fc747eeba44aba7630f0e3ac0ca7b/FLAGb5c6082ad [2022-11-16 15:52:39,885 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:52:39,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-16 15:52:39,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/data/95bcc9d25/263fc747eeba44aba7630f0e3ac0ca7b/FLAGb5c6082ad [2022-11-16 15:52:40,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/data/95bcc9d25/263fc747eeba44aba7630f0e3ac0ca7b [2022-11-16 15:52:40,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:52:40,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:52:40,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:40,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:52:40,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:52:40,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4103fccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40, skipping insertion in model container [2022-11-16 15:52:40,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:52:40,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:52:40,622 WARN L229 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_40ffa735-7bd9-40e8-8b24-2b914bf63159/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-16 15:52:40,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:40,645 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:52:40,705 WARN L229 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_40ffa735-7bd9-40e8-8b24-2b914bf63159/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-16 15:52:40,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:40,735 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:52:40,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40 WrapperNode [2022-11-16 15:52:40,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:40,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:40,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:52:40,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:52:40,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,803 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 341 [2022-11-16 15:52:40,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:40,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:52:40,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:52:40,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:52:40,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:52:40,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:52:40,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:52:40,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:52:40,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:40,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:40,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:52:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:52:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 15:52:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 15:52:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:52:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:52:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:52:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 15:52:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 15:52:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 15:52:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 15:52:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 15:52:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 15:52:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 15:52:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:52:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:52:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:52:40,965 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 15:52:41,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:52:41,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:52:42,099 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:52:42,127 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:52:42,127 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 15:52:42,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:42 BoogieIcfgContainer [2022-11-16 15:52:42,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:52:42,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:52:42,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:52:42,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:52:42,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:52:40" (1/3) ... [2022-11-16 15:52:42,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b1ddc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:42, skipping insertion in model container [2022-11-16 15:52:42,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (2/3) ... [2022-11-16 15:52:42,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b1ddc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:42, skipping insertion in model container [2022-11-16 15:52:42,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:42" (3/3) ... [2022-11-16 15:52:42,151 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-11-16 15:52:42,160 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 15:52:42,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:52:42,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2022-11-16 15:52:42,173 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 15:52:42,402 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 15:52:42,465 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 15:52:42,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 516 places, 539 transitions, 1094 flow [2022-11-16 15:52:42,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 516 places, 539 transitions, 1094 flow [2022-11-16 15:52:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 539 transitions, 1094 flow [2022-11-16 15:52:42,695 INFO L130 PetriNetUnfolder]: 30/537 cut-off events. [2022-11-16 15:52:42,695 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 15:52:42,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 537 events. 30/537 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 813 event pairs, 0 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 343. Up to 2 conditions per place. [2022-11-16 15:52:42,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 6986 [2022-11-16 15:53:27,487 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 170 DAG size of output: 166 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 15:53:30,020 INFO L134 LiptonReduction]: Checked pairs total: 52370 [2022-11-16 15:53:30,020 INFO L136 LiptonReduction]: Total number of compositions: 666 [2022-11-16 15:53:30,028 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 123 transitions, 262 flow [2022-11-16 15:53:30,245 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4961 states, 4803 states have (on average 2.936706225275869) internal successors, (14105), 4960 states have internal predecessors, (14105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:30,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:53:30,269 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;@5a4008df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:53:30,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2022-11-16 15:53:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 4961 states, 4803 states have (on average 2.936706225275869) internal successors, (14105), 4960 states have internal predecessors, (14105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 15:53:30,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:30,289 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 15:53:30,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1972, now seen corresponding path program 1 times [2022-11-16 15:53:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:30,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102784542] [2022-11-16 15:53:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:30,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:30,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102784542] [2022-11-16 15:53:30,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102784542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:30,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:30,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 15:53:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182573863] [2022-11-16 15:53:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 15:53:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 15:53:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 15:53:30,449 INFO L87 Difference]: Start difference. First operand has 4961 states, 4803 states have (on average 2.936706225275869) internal successors, (14105), 4960 states have internal predecessors, (14105), 0 states have call successors, (0), 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) [2022-11-16 15:53:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:30,625 INFO L93 Difference]: Finished difference Result 3497 states and 9991 transitions. [2022-11-16 15:53:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 15:53:30,633 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 [2022-11-16 15:53:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:30,678 INFO L225 Difference]: With dead ends: 3497 [2022-11-16 15:53:30,678 INFO L226 Difference]: Without dead ends: 3495 [2022-11-16 15:53:30,679 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 [2022-11-16 15:53:30,688 INFO L413 NwaCegarLoop]: 41 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, 41 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 [2022-11-16 15:53:30,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:53:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2022-11-16 15:53:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2022-11-16 15:53:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3468 states have (on average 2.8800461361014995) internal successors, (9988), 3494 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 9988 transitions. [2022-11-16 15:53:30,907 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 9988 transitions. Word has length 1 [2022-11-16 15:53:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:30,907 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 9988 transitions. [2022-11-16 15:53:30,908 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) [2022-11-16 15:53:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 9988 transitions. [2022-11-16 15:53:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 15:53:30,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:30,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:30,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:53:30,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:30,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1786614123, now seen corresponding path program 1 times [2022-11-16 15:53:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:30,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879797105] [2022-11-16 15:53:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:30,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:30,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:30,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693798753] [2022-11-16 15:53:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:30,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:30,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:30,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:53:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:31,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 15:53:31,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:31,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:31,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:31,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879797105] [2022-11-16 15:53:31,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:31,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693798753] [2022-11-16 15:53:31,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693798753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:31,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:31,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:53:31,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164027950] [2022-11-16 15:53:31,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:53:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:31,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:53:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:53:31,237 INFO L87 Difference]: Start difference. First operand 3495 states and 9988 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) [2022-11-16 15:53:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:31,575 INFO L93 Difference]: Finished difference Result 5051 states and 13782 transitions. [2022-11-16 15:53:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:53:31,575 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 [2022-11-16 15:53:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:31,604 INFO L225 Difference]: With dead ends: 5051 [2022-11-16 15:53:31,604 INFO L226 Difference]: Without dead ends: 5051 [2022-11-16 15:53:31,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:31,607 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 231 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:31,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 192 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 15:53:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2022-11-16 15:53:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 3889. [2022-11-16 15:53:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 3862 states have (on average 2.881149663386846) internal successors, (11127), 3888 states have internal predecessors, (11127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 11127 transitions. [2022-11-16 15:53:31,812 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 11127 transitions. Word has length 13 [2022-11-16 15:53:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 3889 states and 11127 transitions. [2022-11-16 15:53:31,813 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) [2022-11-16 15:53:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 11127 transitions. [2022-11-16 15:53:31,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 15:53:31,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:31,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:31,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:32,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 15:53:32,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1584977368, now seen corresponding path program 1 times [2022-11-16 15:53:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546085847] [2022-11-16 15:53:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:32,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123350166] [2022-11-16 15:53:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:32,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:32,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:32,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:53:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:32,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 15:53:32,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,388 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-16 15:53:32,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 15:53:32,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:53:32,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,479 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 15:53:32,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 29 [2022-11-16 15:53:32,548 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 11 treesize of output 7 [2022-11-16 15:53:32,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,576 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 21 treesize of output 20 [2022-11-16 15:53:32,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,611 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 30 treesize of output 32 [2022-11-16 15:53:32,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:32,656 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 39 treesize of output 44 [2022-11-16 15:53:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:32,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:32,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546085847] [2022-11-16 15:53:32,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123350166] [2022-11-16 15:53:32,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123350166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:32,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:32,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:53:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379897756] [2022-11-16 15:53:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:32,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 15:53:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 15:53:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:32,692 INFO L87 Difference]: Start difference. First operand 3889 states and 11127 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2022-11-16 15:53:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:33,714 INFO L93 Difference]: Finished difference Result 6342 states and 17945 transitions. [2022-11-16 15:53:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:53:33,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 [2022-11-16 15:53:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:33,769 INFO L225 Difference]: With dead ends: 6342 [2022-11-16 15:53:33,770 INFO L226 Difference]: Without dead ends: 6342 [2022-11-16 15:53:33,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:33,778 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 160 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:33,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 69 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 15:53:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2022-11-16 15:53:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 5698. [2022-11-16 15:53:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5671 states have (on average 2.9324634103332747) internal successors, (16630), 5697 states have internal predecessors, (16630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 16630 transitions. [2022-11-16 15:53:34,080 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 16630 transitions. Word has length 13 [2022-11-16 15:53:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:34,081 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 16630 transitions. [2022-11-16 15:53:34,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2022-11-16 15:53:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 16630 transitions. [2022-11-16 15:53:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 15:53:34,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:34,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:34,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:34,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:34,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash -18038242, now seen corresponding path program 1 times [2022-11-16 15:53:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020525882] [2022-11-16 15:53:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:34,304 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210896683] [2022-11-16 15:53:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:34,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:34,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:34,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 15:53:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:34,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 15:53:34,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:34,572 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:53:34,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2022-11-16 15:53:34,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:34,625 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 15:53:34,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:34,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 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 [2022-11-16 15:53:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:53:34,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:34,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:34,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020525882] [2022-11-16 15:53:34,708 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:34,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210896683] [2022-11-16 15:53:34,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210896683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:34,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:34,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 15:53:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163590619] [2022-11-16 15:53:34,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:34,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 15:53:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 15:53:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 15:53:34,712 INFO L87 Difference]: Start difference. First operand 5698 states and 16630 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2022-11-16 15:53:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:35,718 INFO L93 Difference]: Finished difference Result 12121 states and 35429 transitions. [2022-11-16 15:53:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:53:35,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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 [2022-11-16 15:53:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:35,783 INFO L225 Difference]: With dead ends: 12121 [2022-11-16 15:53:35,783 INFO L226 Difference]: Without dead ends: 12121 [2022-11-16 15:53:35,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-16 15:53:35,784 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 306 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:35,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 83 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 15:53:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2022-11-16 15:53:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 7693. [2022-11-16 15:53:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7693 states, 7666 states have (on average 2.9744325593529872) internal successors, (22802), 7692 states have internal predecessors, (22802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 22802 transitions. [2022-11-16 15:53:36,128 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 22802 transitions. Word has length 15 [2022-11-16 15:53:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:36,129 INFO L495 AbstractCegarLoop]: Abstraction has 7693 states and 22802 transitions. [2022-11-16 15:53:36,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2022-11-16 15:53:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 22802 transitions. [2022-11-16 15:53:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 15:53:36,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:36,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:36,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:36,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:36,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:36,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash 593733840, now seen corresponding path program 1 times [2022-11-16 15:53:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458344217] [2022-11-16 15:53:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:36,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:36,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565190872] [2022-11-16 15:53:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:36,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:36,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:36,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:36,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 15:53:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:36,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 15:53:36,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:36,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:36,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458344217] [2022-11-16 15:53:36,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565190872] [2022-11-16 15:53:36,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565190872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:36,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:36,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:53:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450909162] [2022-11-16 15:53:36,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:36,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:53:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:53:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:53:36,533 INFO L87 Difference]: Start difference. First operand 7693 states and 22802 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-11-16 15:53:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:36,989 INFO L93 Difference]: Finished difference Result 8560 states and 24995 transitions. [2022-11-16 15:53:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:53:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2022-11-16 15:53:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:37,035 INFO L225 Difference]: With dead ends: 8560 [2022-11-16 15:53:37,036 INFO L226 Difference]: Without dead ends: 8558 [2022-11-16 15:53:37,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:37,037 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:37,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 176 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 15:53:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8558 states. [2022-11-16 15:53:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8558 to 8287. [2022-11-16 15:53:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8287 states, 8260 states have (on average 2.96319612590799) internal successors, (24476), 8286 states have internal predecessors, (24476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 24476 transitions. [2022-11-16 15:53:37,373 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 24476 transitions. Word has length 15 [2022-11-16 15:53:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:37,374 INFO L495 AbstractCegarLoop]: Abstraction has 8287 states and 24476 transitions. [2022-11-16 15:53:37,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-11-16 15:53:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 24476 transitions. [2022-11-16 15:53:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 15:53:37,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:37,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:37,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:37,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:37,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:37,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:37,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1827925498, now seen corresponding path program 1 times [2022-11-16 15:53:37,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:37,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396320979] [2022-11-16 15:53:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:37,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:37,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:37,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431246269] [2022-11-16 15:53:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:37,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:37,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:37,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:37,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 15:53:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 15:53:37,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:37,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:37,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:37,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396320979] [2022-11-16 15:53:37,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431246269] [2022-11-16 15:53:37,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431246269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:37,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:37,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:53:37,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544127988] [2022-11-16 15:53:37,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:37,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:53:37,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:53:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:53:37,816 INFO L87 Difference]: Start difference. First operand 8287 states and 24476 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:38,250 INFO L93 Difference]: Finished difference Result 11641 states and 34100 transitions. [2022-11-16 15:53:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:53:38,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 15:53:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:38,303 INFO L225 Difference]: With dead ends: 11641 [2022-11-16 15:53:38,304 INFO L226 Difference]: Without dead ends: 11633 [2022-11-16 15:53:38,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:38,305 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 184 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:38,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 233 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 15:53:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2022-11-16 15:53:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 9154. [2022-11-16 15:53:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9154 states, 9127 states have (on average 2.9810452503560865) internal successors, (27208), 9153 states have internal predecessors, (27208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 27208 transitions. [2022-11-16 15:53:38,728 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 27208 transitions. Word has length 17 [2022-11-16 15:53:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 9154 states and 27208 transitions. [2022-11-16 15:53:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 27208 transitions. [2022-11-16 15:53:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 15:53:38,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:38,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:38,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:38,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:38,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1157699364, now seen corresponding path program 1 times [2022-11-16 15:53:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:38,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606342578] [2022-11-16 15:53:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:38,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:38,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030217401] [2022-11-16 15:53:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:38,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:38,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:38,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:38,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 15:53:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 15:53:39,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:39,206 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:53:39,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2022-11-16 15:53:39,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:39,270 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 15:53:39,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:39,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 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 [2022-11-16 15:53:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:53:39,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:39,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:39,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606342578] [2022-11-16 15:53:39,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:39,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030217401] [2022-11-16 15:53:39,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030217401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:39,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:39,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 15:53:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874902702] [2022-11-16 15:53:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 15:53:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 15:53:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:53:39,351 INFO L87 Difference]: Start difference. First operand 9154 states and 27208 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2022-11-16 15:53:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:40,171 INFO L93 Difference]: Finished difference Result 19431 states and 57747 transitions. [2022-11-16 15:53:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:53:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 [2022-11-16 15:53:40,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:40,242 INFO L225 Difference]: With dead ends: 19431 [2022-11-16 15:53:40,242 INFO L226 Difference]: Without dead ends: 19431 [2022-11-16 15:53:40,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:53:40,243 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 203 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:40,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 105 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:53:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19431 states. [2022-11-16 15:53:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19431 to 15984. [2022-11-16 15:53:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15984 states, 15957 states have (on average 3.046186626558877) internal successors, (48608), 15983 states have internal predecessors, (48608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15984 states to 15984 states and 48608 transitions. [2022-11-16 15:53:40,906 INFO L78 Accepts]: Start accepts. Automaton has 15984 states and 48608 transitions. Word has length 18 [2022-11-16 15:53:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:40,906 INFO L495 AbstractCegarLoop]: Abstraction has 15984 states and 48608 transitions. [2022-11-16 15:53:40,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2022-11-16 15:53:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 15984 states and 48608 transitions. [2022-11-16 15:53:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 15:53:40,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:40,910 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:40,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:41,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 15:53:41,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:41,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2032923745, now seen corresponding path program 1 times [2022-11-16 15:53:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:41,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551737774] [2022-11-16 15:53:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:41,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:41,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:41,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944517688] [2022-11-16 15:53:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:41,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:41,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:41,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:41,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 15:53:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:41,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 15:53:41,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:41,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:53:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:41,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551737774] [2022-11-16 15:53:41,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:41,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944517688] [2022-11-16 15:53:41,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944517688] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 15:53:41,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:53:41,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 15:53:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334806083] [2022-11-16 15:53:41,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:41,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 15:53:41,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 15:53:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:41,410 INFO L87 Difference]: Start difference. First operand 15984 states and 48608 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:41,735 INFO L93 Difference]: Finished difference Result 16760 states and 50492 transitions. [2022-11-16 15:53:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:53:41,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 15:53:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:41,800 INFO L225 Difference]: With dead ends: 16760 [2022-11-16 15:53:41,801 INFO L226 Difference]: Without dead ends: 16760 [2022-11-16 15:53:41,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:53:41,803 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 137 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:41,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 115 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 15:53:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2022-11-16 15:53:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 16669. [2022-11-16 15:53:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16669 states, 16636 states have (on average 3.0240442414041837) internal successors, (50308), 16668 states have internal predecessors, (50308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16669 states to 16669 states and 50308 transitions. [2022-11-16 15:53:42,534 INFO L78 Accepts]: Start accepts. Automaton has 16669 states and 50308 transitions. Word has length 20 [2022-11-16 15:53:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:42,534 INFO L495 AbstractCegarLoop]: Abstraction has 16669 states and 50308 transitions. [2022-11-16 15:53:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 16669 states and 50308 transitions. [2022-11-16 15:53:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 15:53:42,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:42,537 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] [2022-11-16 15:53:42,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:42,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:42,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2130861236, now seen corresponding path program 1 times [2022-11-16 15:53:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:42,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756601919] [2022-11-16 15:53:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:42,765 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119865385] [2022-11-16 15:53:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:42,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:42,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:42,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:42,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 15:53:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:42,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 15:53:42,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:43,032 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:53:43,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2022-11-16 15:53:43,086 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:43,086 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 15:53:43,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:43,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 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 [2022-11-16 15:53:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:53:43,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:43,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:43,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756601919] [2022-11-16 15:53:43,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119865385] [2022-11-16 15:53:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119865385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:43,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:43,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 15:53:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492577492] [2022-11-16 15:53:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 15:53:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 15:53:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 15:53:43,167 INFO L87 Difference]: Start difference. First operand 16669 states and 50308 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2022-11-16 15:53:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:44,299 INFO L93 Difference]: Finished difference Result 26054 states and 77616 transitions. [2022-11-16 15:53:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:53:44,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 [2022-11-16 15:53:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:44,366 INFO L225 Difference]: With dead ends: 26054 [2022-11-16 15:53:44,366 INFO L226 Difference]: Without dead ends: 26054 [2022-11-16 15:53:44,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-16 15:53:44,367 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 406 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:44,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 107 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 15:53:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26054 states. [2022-11-16 15:53:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26054 to 21441. [2022-11-16 15:53:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21441 states, 21408 states have (on average 3.0417600896860986) internal successors, (65118), 21440 states have internal predecessors, (65118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 65118 transitions. [2022-11-16 15:53:45,065 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 65118 transitions. Word has length 21 [2022-11-16 15:53:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:45,066 INFO L495 AbstractCegarLoop]: Abstraction has 21441 states and 65118 transitions. [2022-11-16 15:53:45,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2022-11-16 15:53:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 65118 transitions. [2022-11-16 15:53:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 15:53:45,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:45,070 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] [2022-11-16 15:53:45,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:45,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:45,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash 373733145, now seen corresponding path program 1 times [2022-11-16 15:53:45,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:45,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158371907] [2022-11-16 15:53:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:45,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:45,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812111701] [2022-11-16 15:53:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:45,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:45,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:45,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:45,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 15:53:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:45,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 15:53:45,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:45,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,759 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-16 15:53:45,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 15:53:45,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:53:45,790 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 15:53:45,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 1 [2022-11-16 15:53:45,898 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 11 treesize of output 7 [2022-11-16 15:53:45,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,928 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 21 treesize of output 20 [2022-11-16 15:53:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:45,968 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 30 treesize of output 32 [2022-11-16 15:53:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:46,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:46,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:46,013 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 39 treesize of output 44 [2022-11-16 15:53:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:53:46,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:46,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:46,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158371907] [2022-11-16 15:53:46,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:46,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812111701] [2022-11-16 15:53:46,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812111701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:46,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:46,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:53:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26675789] [2022-11-16 15:53:46,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:46,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 15:53:46,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 15:53:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:46,050 INFO L87 Difference]: Start difference. First operand 21441 states and 65118 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) 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) [2022-11-16 15:53:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:46,669 INFO L93 Difference]: Finished difference Result 21635 states and 65481 transitions. [2022-11-16 15:53:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:53:46,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) 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 [2022-11-16 15:53:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:46,720 INFO L225 Difference]: With dead ends: 21635 [2022-11-16 15:53:46,720 INFO L226 Difference]: Without dead ends: 21367 [2022-11-16 15:53:46,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:53:46,721 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 111 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:46,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 57 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 15:53:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21367 states. [2022-11-16 15:53:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21367 to 21324. [2022-11-16 15:53:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21324 states, 21292 states have (on average 3.036351681382679) internal successors, (64650), 21323 states have internal predecessors, (64650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21324 states to 21324 states and 64650 transitions. [2022-11-16 15:53:47,197 INFO L78 Accepts]: Start accepts. Automaton has 21324 states and 64650 transitions. Word has length 22 [2022-11-16 15:53:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:47,197 INFO L495 AbstractCegarLoop]: Abstraction has 21324 states and 64650 transitions. [2022-11-16 15:53:47,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) 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) [2022-11-16 15:53:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 21324 states and 64650 transitions. [2022-11-16 15:53:47,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 15:53:47,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:47,199 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] [2022-11-16 15:53:47,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:47,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:47,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:47,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -678487220, now seen corresponding path program 1 times [2022-11-16 15:53:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288680078] [2022-11-16 15:53:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:47,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:47,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164160306] [2022-11-16 15:53:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:47,423 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:47,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 15:53:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:47,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 15:53:47,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:47,618 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-16 15:53:47,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 38 treesize of output 37 [2022-11-16 15:53:47,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:47,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 55 treesize of output 57 [2022-11-16 15:53:47,676 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:47,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 77 [2022-11-16 15:53:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:53:47,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:47,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:47,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288680078] [2022-11-16 15:53:47,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:47,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164160306] [2022-11-16 15:53:47,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164160306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:47,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:47,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:53:47,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640206514] [2022-11-16 15:53:47,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:47,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 15:53:47,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 15:53:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:53:47,705 INFO L87 Difference]: Start difference. First operand 21324 states and 64650 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:48,535 INFO L93 Difference]: Finished difference Result 23643 states and 71115 transitions. [2022-11-16 15:53:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 15:53:48,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-16 15:53:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:48,598 INFO L225 Difference]: With dead ends: 23643 [2022-11-16 15:53:48,598 INFO L226 Difference]: Without dead ends: 23643 [2022-11-16 15:53:48,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:53:48,599 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 70 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:48,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 54 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 15:53:48,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23643 states. [2022-11-16 15:53:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23643 to 22719. [2022-11-16 15:53:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22719 states, 22688 states have (on average 3.0170574753173485) internal successors, (68451), 22718 states have internal predecessors, (68451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 68451 transitions. [2022-11-16 15:53:49,253 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 68451 transitions. Word has length 24 [2022-11-16 15:53:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:49,253 INFO L495 AbstractCegarLoop]: Abstraction has 22719 states and 68451 transitions. [2022-11-16 15:53:49,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 68451 transitions. [2022-11-16 15:53:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 15:53:49,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:49,256 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] [2022-11-16 15:53:49,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:49,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 15:53:49,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -217936658, now seen corresponding path program 1 times [2022-11-16 15:53:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:49,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765311394] [2022-11-16 15:53:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:49,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:49,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75094537] [2022-11-16 15:53:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:49,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:49,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:49,476 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:49,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 15:53:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:49,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 15:53:49,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:50,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2022-11-16 15:53:50,126 INFO L321 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2022-11-16 15:53:50,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 218 treesize of output 225 [2022-11-16 15:53:50,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 204 [2022-11-16 15:53:50,171 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-11-16 15:53:50,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 214 treesize of output 213 [2022-11-16 15:53:50,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 200 [2022-11-16 15:53:50,549 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:53:50,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2022-11-16 15:53:50,630 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 40 treesize of output 42 [2022-11-16 15:53:50,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 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 [2022-11-16 15:53:50,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:50,764 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 54 treesize of output 50 [2022-11-16 15:53:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:53:50,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:50,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:50,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765311394] [2022-11-16 15:53:50,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:50,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75094537] [2022-11-16 15:53:50,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75094537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:50,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:50,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 15:53:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38220341] [2022-11-16 15:53:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 15:53:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 15:53:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 15:53:50,803 INFO L87 Difference]: Start difference. First operand 22719 states and 68451 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 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) [2022-11-16 15:53:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:52,299 INFO L93 Difference]: Finished difference Result 29379 states and 87012 transitions. [2022-11-16 15:53:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 15:53:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 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 [2022-11-16 15:53:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:52,367 INFO L225 Difference]: With dead ends: 29379 [2022-11-16 15:53:52,367 INFO L226 Difference]: Without dead ends: 29379 [2022-11-16 15:53:52,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-16 15:53:52,368 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 218 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:52,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 141 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 15:53:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29379 states. [2022-11-16 15:53:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29379 to 23519. [2022-11-16 15:53:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23519 states, 23488 states have (on average 3.0205636920980927) internal successors, (70947), 23518 states have internal predecessors, (70947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23519 states to 23519 states and 70947 transitions. [2022-11-16 15:53:52,952 INFO L78 Accepts]: Start accepts. Automaton has 23519 states and 70947 transitions. Word has length 25 [2022-11-16 15:53:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:52,952 INFO L495 AbstractCegarLoop]: Abstraction has 23519 states and 70947 transitions. [2022-11-16 15:53:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 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) [2022-11-16 15:53:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23519 states and 70947 transitions. [2022-11-16 15:53:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 15:53:52,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:52,958 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] [2022-11-16 15:53:52,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 15:53:53,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 15:53:53,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash 28805729, now seen corresponding path program 1 times [2022-11-16 15:53:53,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:53,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014432918] [2022-11-16 15:53:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:53,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:53,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910899472] [2022-11-16 15:53:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:53,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:53,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:53,186 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:53,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 15:53:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:53,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 15:53:53,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:53,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 208 [2022-11-16 15:53:53,635 INFO L321 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2022-11-16 15:53:53,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 218 treesize of output 225 [2022-11-16 15:53:53,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 204 [2022-11-16 15:53:53,704 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-11-16 15:53:53,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 214 treesize of output 213 [2022-11-16 15:53:53,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 200 [2022-11-16 15:53:54,048 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 11 treesize of output 7 [2022-11-16 15:53:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,091 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 21 treesize of output 20 [2022-11-16 15:53:54,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,130 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 30 treesize of output 32 [2022-11-16 15:53:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,185 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 39 treesize of output 44 [2022-11-16 15:53:54,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:53:54,258 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 41 treesize of output 37 [2022-11-16 15:53:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:53:54,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:54,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014432918] [2022-11-16 15:53:54,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:54,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910899472] [2022-11-16 15:53:54,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910899472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:54,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:54,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 15:53:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039736582] [2022-11-16 15:53:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:54,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 15:53:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 15:53:54,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 15:53:54,304 INFO L87 Difference]: Start difference. First operand 23519 states and 70947 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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) [2022-11-16 15:53:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:55,747 INFO L93 Difference]: Finished difference Result 29543 states and 87606 transitions. [2022-11-16 15:53:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 15:53:55,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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 [2022-11-16 15:53:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:55,823 INFO L225 Difference]: With dead ends: 29543 [2022-11-16 15:53:55,823 INFO L226 Difference]: Without dead ends: 29519 [2022-11-16 15:53:55,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-16 15:53:55,824 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 177 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:55,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 101 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 15:53:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29519 states. [2022-11-16 15:53:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29519 to 22719. [2022-11-16 15:53:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22719 states, 22691 states have (on average 3.016702657441276) internal successors, (68452), 22718 states have internal predecessors, (68452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 68452 transitions. [2022-11-16 15:53:56,393 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 68452 transitions. Word has length 25 [2022-11-16 15:53:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:56,393 INFO L495 AbstractCegarLoop]: Abstraction has 22719 states and 68452 transitions. [2022-11-16 15:53:56,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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) [2022-11-16 15:53:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 68452 transitions. [2022-11-16 15:53:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 15:53:56,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:56,399 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] [2022-11-16 15:53:56,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:56,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:56,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash -316340859, now seen corresponding path program 1 times [2022-11-16 15:53:56,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:56,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935768758] [2022-11-16 15:53:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:56,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:56,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774200457] [2022-11-16 15:53:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:56,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:56,624 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:56,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 15:53:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:53:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 15:53:56,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 15:53:56,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:53:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 15:53:57,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935768758] [2022-11-16 15:53:57,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774200457] [2022-11-16 15:53:57,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774200457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:53:57,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186624600] [2022-11-16 15:53:57,038 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) [2022-11-16 15:53:57,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 15:53:57,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 15:53:57,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214214186] [2022-11-16 15:53:57,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 15:53:57,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 15:53:57,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 15:53:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-16 15:53:57,043 INFO L87 Difference]: Start difference. First operand 22719 states and 68452 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:53:57,935 INFO L93 Difference]: Finished difference Result 39537 states and 116870 transitions. [2022-11-16 15:53:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 15:53:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2022-11-16 15:53:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:53:58,323 INFO L225 Difference]: With dead ends: 39537 [2022-11-16 15:53:58,323 INFO L226 Difference]: Without dead ends: 38497 [2022-11-16 15:53:58,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-16 15:53:58,324 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 323 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 15:53:58,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 533 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 15:53:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38497 states. [2022-11-16 15:53:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38497 to 34568. [2022-11-16 15:53:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34568 states, 34540 states have (on average 3.0570642733063114) internal successors, (105591), 34567 states have internal predecessors, (105591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34568 states to 34568 states and 105591 transitions. [2022-11-16 15:53:59,212 INFO L78 Accepts]: Start accepts. Automaton has 34568 states and 105591 transitions. Word has length 28 [2022-11-16 15:53:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:53:59,212 INFO L495 AbstractCegarLoop]: Abstraction has 34568 states and 105591 transitions. [2022-11-16 15:53:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:53:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 34568 states and 105591 transitions. [2022-11-16 15:53:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 15:53:59,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:53:59,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:53:59,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 15:53:59,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 15:53:59,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:53:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:53:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 336884430, now seen corresponding path program 2 times [2022-11-16 15:53:59,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:53:59,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753278631] [2022-11-16 15:53:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:53:59,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:53:59,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:53:59,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661196649] [2022-11-16 15:53:59,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 15:53:59,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:53:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:53:59,456 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:53:59,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 15:53:59,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 15:53:59,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:53:59,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 15:53:59,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:53:59,695 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:53:59,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 27 [2022-11-16 15:53:59,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:59,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 15:53:59,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:53:59,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 [2022-11-16 15:53:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 15:53:59,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:53:59,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:53:59,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753278631] [2022-11-16 15:53:59,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:53:59,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661196649] [2022-11-16 15:53:59,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661196649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:53:59,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:53:59,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:53:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766364378] [2022-11-16 15:53:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:53:59,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 15:53:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:53:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 15:53:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:53:59,773 INFO L87 Difference]: Start difference. First operand 34568 states and 105591 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:00,569 INFO L93 Difference]: Finished difference Result 39256 states and 119601 transitions. [2022-11-16 15:54:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 15:54:00,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 30 [2022-11-16 15:54:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:00,690 INFO L225 Difference]: With dead ends: 39256 [2022-11-16 15:54:00,690 INFO L226 Difference]: Without dead ends: 39256 [2022-11-16 15:54:00,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:00,691 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 76 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:00,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 56 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:54:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39256 states. [2022-11-16 15:54:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39256 to 36318. [2022-11-16 15:54:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36318 states, 36293 states have (on average 3.0533987270272505) internal successors, (110817), 36317 states have internal predecessors, (110817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36318 states to 36318 states and 110817 transitions. [2022-11-16 15:54:01,999 INFO L78 Accepts]: Start accepts. Automaton has 36318 states and 110817 transitions. Word has length 30 [2022-11-16 15:54:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:01,999 INFO L495 AbstractCegarLoop]: Abstraction has 36318 states and 110817 transitions. [2022-11-16 15:54:01,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 36318 states and 110817 transitions. [2022-11-16 15:54:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 15:54:02,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:02,015 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] [2022-11-16 15:54:02,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 15:54:02,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:02,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash -68533577, now seen corresponding path program 1 times [2022-11-16 15:54:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:02,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679997417] [2022-11-16 15:54:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:02,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:02,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868788450] [2022-11-16 15:54:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:02,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:02,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:02,246 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:02,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 15:54:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:02,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 15:54:02,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:02,503 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 15:54:02,535 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:02,535 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 [2022-11-16 15:54:02,564 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 15:54:02,565 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 [2022-11-16 15:54:02,684 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 [2022-11-16 15:54:02,725 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 [2022-11-16 15:54:02,761 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 [2022-11-16 15:54:02,804 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 [2022-11-16 15:54:02,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2022-11-16 15:54:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 15:54:02,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:02,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:02,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679997417] [2022-11-16 15:54:02,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:02,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868788450] [2022-11-16 15:54:02,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868788450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:02,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:02,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 15:54:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124325517] [2022-11-16 15:54:02,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:02,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 15:54:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 15:54:02,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 15:54:02,896 INFO L87 Difference]: Start difference. First operand 36318 states and 110817 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:03,986 INFO L93 Difference]: Finished difference Result 46350 states and 139406 transitions. [2022-11-16 15:54:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 15:54:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 15:54:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:04,100 INFO L225 Difference]: With dead ends: 46350 [2022-11-16 15:54:04,100 INFO L226 Difference]: Without dead ends: 46350 [2022-11-16 15:54:04,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-11-16 15:54:04,101 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 392 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 92 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 15:54:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46350 states. [2022-11-16 15:54:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46350 to 38637. [2022-11-16 15:54:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38637 states, 38612 states have (on average 3.0567440174039158) internal successors, (118027), 38636 states have internal predecessors, (118027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38637 states to 38637 states and 118027 transitions. [2022-11-16 15:54:05,443 INFO L78 Accepts]: Start accepts. Automaton has 38637 states and 118027 transitions. Word has length 30 [2022-11-16 15:54:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:05,443 INFO L495 AbstractCegarLoop]: Abstraction has 38637 states and 118027 transitions. [2022-11-16 15:54:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38637 states and 118027 transitions. [2022-11-16 15:54:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 15:54:05,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:05,450 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] [2022-11-16 15:54:05,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:05,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 15:54:05,654 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1914949833, now seen corresponding path program 1 times [2022-11-16 15:54:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:05,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270787030] [2022-11-16 15:54:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:05,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:05,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813676696] [2022-11-16 15:54:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:05,685 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:05,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 15:54:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:05,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 15:54:05,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:05,978 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 15:54:06,004 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 15:54:06,004 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 [2022-11-16 15:54:06,041 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 15:54:06,041 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 [2022-11-16 15:54:06,148 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 [2022-11-16 15:54:06,175 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 [2022-11-16 15:54:06,217 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 [2022-11-16 15:54:06,271 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 [2022-11-16 15:54:06,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2022-11-16 15:54:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 15:54:06,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:06,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270787030] [2022-11-16 15:54:06,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:06,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813676696] [2022-11-16 15:54:06,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813676696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:06,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:06,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 15:54:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912214611] [2022-11-16 15:54:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 15:54:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 15:54:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 15:54:06,368 INFO L87 Difference]: Start difference. First operand 38637 states and 118027 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:07,618 INFO L93 Difference]: Finished difference Result 39932 states and 120148 transitions. [2022-11-16 15:54:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 15:54:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 15:54:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:07,735 INFO L225 Difference]: With dead ends: 39932 [2022-11-16 15:54:07,735 INFO L226 Difference]: Without dead ends: 39932 [2022-11-16 15:54:07,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-11-16 15:54:07,736 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 380 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:07,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 81 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 15:54:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39932 states. [2022-11-16 15:54:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39932 to 37302. [2022-11-16 15:54:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37302 states, 37277 states have (on average 3.0503795906322932) internal successors, (113709), 37301 states have internal predecessors, (113709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37302 states to 37302 states and 113709 transitions. [2022-11-16 15:54:08,707 INFO L78 Accepts]: Start accepts. Automaton has 37302 states and 113709 transitions. Word has length 30 [2022-11-16 15:54:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:08,708 INFO L495 AbstractCegarLoop]: Abstraction has 37302 states and 113709 transitions. [2022-11-16 15:54:08,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 37302 states and 113709 transitions. [2022-11-16 15:54:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 15:54:08,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:08,713 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] [2022-11-16 15:54:08,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 15:54:08,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:08,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1092024790, now seen corresponding path program 1 times [2022-11-16 15:54:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:08,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492060622] [2022-11-16 15:54:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:08,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:08,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267000695] [2022-11-16 15:54:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:08,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:08,932 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:08,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 15:54:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 15:54:09,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:09,200 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:54:09,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 27 [2022-11-16 15:54:09,228 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:09,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-16 15:54:09,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:09,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 [2022-11-16 15:54:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:54:09,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:09,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:09,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492060622] [2022-11-16 15:54:09,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267000695] [2022-11-16 15:54:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267000695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:09,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:09,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:54:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050300702] [2022-11-16 15:54:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:09,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 15:54:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 15:54:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:09,274 INFO L87 Difference]: Start difference. First operand 37302 states and 113709 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:10,440 INFO L93 Difference]: Finished difference Result 39848 states and 121211 transitions. [2022-11-16 15:54:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 15:54:10,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 15:54:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:10,535 INFO L225 Difference]: With dead ends: 39848 [2022-11-16 15:54:10,535 INFO L226 Difference]: Without dead ends: 39848 [2022-11-16 15:54:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:10,536 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 64 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 60 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 15:54:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2022-11-16 15:54:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 39848. [2022-11-16 15:54:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39848 states, 39823 states have (on average 3.043743565276348) internal successors, (121211), 39847 states have internal predecessors, (121211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39848 states to 39848 states and 121211 transitions. [2022-11-16 15:54:11,519 INFO L78 Accepts]: Start accepts. Automaton has 39848 states and 121211 transitions. Word has length 30 [2022-11-16 15:54:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:11,519 INFO L495 AbstractCegarLoop]: Abstraction has 39848 states and 121211 transitions. [2022-11-16 15:54:11,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 39848 states and 121211 transitions. [2022-11-16 15:54:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:54:11,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:11,526 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, 1] [2022-11-16 15:54:11,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 15:54:11,727 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 39112812, now seen corresponding path program 1 times [2022-11-16 15:54:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:11,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231474467] [2022-11-16 15:54:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:11,747 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:11,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595646952] [2022-11-16 15:54:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:11,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:11,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:11,748 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:11,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 15:54:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:12,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 15:54:12,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:12,457 INFO L321 Elim1Store]: treesize reduction 145, result has 19.9 percent of original size [2022-11-16 15:54:12,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 320 treesize of output 329 [2022-11-16 15:54:12,527 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 15:54:12,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 300 treesize of output 305 [2022-11-16 15:54:12,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 272 [2022-11-16 15:54:12,780 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-16 15:54:12,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 75 [2022-11-16 15:54:13,057 INFO L321 Elim1Store]: treesize reduction 68, result has 32.7 percent of original size [2022-11-16 15:54:13,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 68 treesize of output 87 [2022-11-16 15:54:13,394 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-16 15:54:13,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 84 [2022-11-16 15:54:13,918 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 [2022-11-16 15:54:13,992 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 [2022-11-16 15:54:14,068 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 [2022-11-16 15:54:14,436 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 [2022-11-16 15:54:14,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:14,520 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 54 treesize of output 50 [2022-11-16 15:54:14,600 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 54 treesize of output 50 [2022-11-16 15:54:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:54:14,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:14,709 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_thread1Thread1of1ForFork0_~i~0 4))) (and (forall ((v_ArrVal_2355 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse0 1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset 2 .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset 3 .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)))) is different from false [2022-11-16 15:54:14,738 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_thread1Thread1of1ForFork0_~i~0 4))) (and (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset 2 .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse0 1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset 3 .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)))) is different from false [2022-11-16 15:54:14,770 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse2 (+ c_~A~0.offset 3 .cse1))) (let ((.cse0 (store |c_#race| c_~A~0.base (store (select |c_#race| c_~A~0.base) .cse2 |c_thread1Thread1of1ForFork0_#t~nondet3|)))) (and (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse1 1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= |c_thread1Thread1of1ForFork0_#t~nondet3| (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse1)))) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) .cse2) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset 2 .cse1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)))))) is different from false [2022-11-16 15:54:14,799 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse2 (+ c_~A~0.offset 2 .cse1)) (.cse3 (+ c_~A~0.offset 3 .cse1))) (let ((.cse0 (store |c_#race| c_~A~0.base (store (store (select |c_#race| c_~A~0.base) .cse2 |c_thread1Thread1of1ForFork0_#t~nondet3|) .cse3 |c_thread1Thread1of1ForFork0_#t~nondet3|)))) (and (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse1 1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) .cse2) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) (+ c_~A~0.offset .cse1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_2355 (Array Int Int)) (v_ArrVal_2354 (Array Int Int))) (= (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2354) c_~B~0.base v_ArrVal_2355) c_~A~0.base) .cse3) |c_thread1Thread1of1ForFork0_#t~nondet3|)))))) is different from false [2022-11-16 15:54:17,098 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:17,099 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 4 case distinctions, treesize of input 54 treesize of output 70 [2022-11-16 15:54:17,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:17,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 291 treesize of output 148 [2022-11-16 15:54:17,118 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 120 treesize of output 106 [2022-11-16 15:54:17,128 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 106 treesize of output 78 [2022-11-16 15:54:17,166 INFO L321 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2022-11-16 15:54:17,167 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 1 [2022-11-16 15:54:17,176 INFO L321 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2022-11-16 15:54:17,177 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 1 [2022-11-16 15:54:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:54:17,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:17,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231474467] [2022-11-16 15:54:17,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:17,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595646952] [2022-11-16 15:54:17,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595646952] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:17,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:54:17,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 21 [2022-11-16 15:54:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467893176] [2022-11-16 15:54:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:17,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 15:54:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 15:54:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=254, Unknown=18, NotChecked=148, Total=506 [2022-11-16 15:54:17,576 INFO L87 Difference]: Start difference. First operand 39848 states and 121211 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:19,321 INFO L93 Difference]: Finished difference Result 83317 states and 251511 transitions. [2022-11-16 15:54:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 15:54:19,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2022-11-16 15:54:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:19,595 INFO L225 Difference]: With dead ends: 83317 [2022-11-16 15:54:19,595 INFO L226 Difference]: Without dead ends: 83317 [2022-11-16 15:54:19,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=119, Invalid=452, Unknown=45, NotChecked=196, Total=812 [2022-11-16 15:54:19,596 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 123 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1462 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:19,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 204 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 1462 Unchecked, 0.5s Time] [2022-11-16 15:54:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83317 states. [2022-11-16 15:54:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83317 to 42060. [2022-11-16 15:54:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42060 states, 42035 states have (on average 3.0574045438325204) internal successors, (128518), 42059 states have internal predecessors, (128518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42060 states to 42060 states and 128518 transitions. [2022-11-16 15:54:21,307 INFO L78 Accepts]: Start accepts. Automaton has 42060 states and 128518 transitions. Word has length 32 [2022-11-16 15:54:21,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:21,307 INFO L495 AbstractCegarLoop]: Abstraction has 42060 states and 128518 transitions. [2022-11-16 15:54:21,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 42060 states and 128518 transitions. [2022-11-16 15:54:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:54:21,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:21,312 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, 1] [2022-11-16 15:54:21,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:21,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:21,513 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash 39291372, now seen corresponding path program 2 times [2022-11-16 15:54:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:21,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167597576] [2022-11-16 15:54:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:21,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:21,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:21,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059365584] [2022-11-16 15:54:21,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 15:54:21,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:21,535 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:21,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 15:54:21,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 15:54:21,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:54:21,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 15:54:21,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:22,179 INFO L321 Elim1Store]: treesize reduction 145, result has 19.9 percent of original size [2022-11-16 15:54:22,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 320 treesize of output 329 [2022-11-16 15:54:22,301 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-16 15:54:22,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 300 treesize of output 305 [2022-11-16 15:54:22,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 272 [2022-11-16 15:54:22,624 INFO L321 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-16 15:54:22,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 34 [2022-11-16 15:54:22,853 INFO L321 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2022-11-16 15:54:22,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 36 treesize of output 61 [2022-11-16 15:54:23,015 INFO L321 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2022-11-16 15:54:23,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 25 [2022-11-16 15:54:23,587 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 [2022-11-16 15:54:23,713 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 [2022-11-16 15:54:23,803 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 [2022-11-16 15:54:23,906 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 [2022-11-16 15:54:24,049 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 54 treesize of output 50 [2022-11-16 15:54:24,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:24,142 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 54 treesize of output 50 [2022-11-16 15:54:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 15:54:24,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:24,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167597576] [2022-11-16 15:54:24,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059365584] [2022-11-16 15:54:24,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059365584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:24,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:24,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 15:54:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586601273] [2022-11-16 15:54:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 15:54:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 15:54:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 15:54:24,205 INFO L87 Difference]: Start difference. First operand 42060 states and 128518 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:26,502 INFO L93 Difference]: Finished difference Result 48832 states and 147144 transitions. [2022-11-16 15:54:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 15:54:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2022-11-16 15:54:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:26,624 INFO L225 Difference]: With dead ends: 48832 [2022-11-16 15:54:26,624 INFO L226 Difference]: Without dead ends: 48832 [2022-11-16 15:54:26,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-16 15:54:26,625 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 309 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:26,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 112 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 15:54:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48832 states. [2022-11-16 15:54:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48832 to 40036. [2022-11-16 15:54:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40036 states, 40011 states have (on average 3.05460998225488) internal successors, (122218), 40035 states have internal predecessors, (122218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40036 states to 40036 states and 122218 transitions. [2022-11-16 15:54:27,735 INFO L78 Accepts]: Start accepts. Automaton has 40036 states and 122218 transitions. Word has length 32 [2022-11-16 15:54:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:27,736 INFO L495 AbstractCegarLoop]: Abstraction has 40036 states and 122218 transitions. [2022-11-16 15:54:27,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40036 states and 122218 transitions. [2022-11-16 15:54:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:54:27,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:27,743 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, 1] [2022-11-16 15:54:27,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:27,943 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:27,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -798953496, now seen corresponding path program 1 times [2022-11-16 15:54:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:27,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459297723] [2022-11-16 15:54:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:27,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:27,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812003213] [2022-11-16 15:54:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:27,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:27,970 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:27,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 15:54:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:28,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 15:54:28,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:28,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,420 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-16 15:54:28,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 15:54:28,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,476 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 15:54:28,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2022-11-16 15:54:28,818 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 15:54:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:28,917 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 25 treesize of output 25 [2022-11-16 15:54:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,004 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 25 treesize of output 25 [2022-11-16 15:54:29,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2022-11-16 15:54:29,247 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 11 treesize of output 7 [2022-11-16 15:54:29,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,326 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 21 treesize of output 20 [2022-11-16 15:54:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,420 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 30 treesize of output 32 [2022-11-16 15:54:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,525 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 39 treesize of output 44 [2022-11-16 15:54:29,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,641 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 41 treesize of output 37 [2022-11-16 15:54:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,692 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 41 treesize of output 37 [2022-11-16 15:54:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,734 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 41 treesize of output 37 [2022-11-16 15:54:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,785 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 41 treesize of output 37 [2022-11-16 15:54:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:29,966 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 41 treesize of output 37 [2022-11-16 15:54:30,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:30,007 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 41 treesize of output 37 [2022-11-16 15:54:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:30,037 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 41 treesize of output 37 [2022-11-16 15:54:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:30,090 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 41 treesize of output 37 [2022-11-16 15:54:30,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:30,233 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 41 treesize of output 37 [2022-11-16 15:54:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 15:54:30,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:30,371 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2746 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_2746 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_2746 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_2746 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0))) is different from false [2022-11-16 15:54:37,268 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0))))) is different from false [2022-11-16 15:54:37,303 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0))))) is different from false [2022-11-16 15:54:37,348 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0) .cse3 0)))) (and (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_2746 (Array Int Int)) (v_ArrVal_2745 (Array Int Int)) (v_ArrVal_2741 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_2741) c_~F~0.base v_ArrVal_2745) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_2746) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0))))) is different from false [2022-11-16 15:54:37,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:37,378 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 4 case distinctions, treesize of input 41 treesize of output 57 [2022-11-16 15:54:37,390 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:37,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1132 treesize of output 1062 [2022-11-16 15:54:37,488 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 491 treesize of output 459 [2022-11-16 15:54:37,803 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 950 treesize of output 822 [2022-11-16 15:54:37,814 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 822 treesize of output 758 [2022-11-16 15:54:38,079 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-16 15:54:38,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 1 [2022-11-16 15:54:38,091 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-16 15:54:38,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2022-11-16 15:54:38,104 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-16 15:54:38,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2022-11-16 15:54:38,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:38,492 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 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-16 15:54:38,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:38,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:38,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35 [2022-11-16 15:54:38,510 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 20 treesize of output 18 [2022-11-16 15:54:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 15:54:38,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:38,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459297723] [2022-11-16 15:54:38,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:38,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812003213] [2022-11-16 15:54:38,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812003213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:38,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [578367707] [2022-11-16 15:54:38,790 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) [2022-11-16 15:54:38,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 15:54:38,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 31 [2022-11-16 15:54:38,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677971992] [2022-11-16 15:54:38,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 15:54:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 15:54:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 15:54:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=683, Unknown=36, NotChecked=228, Total=1056 [2022-11-16 15:54:38,792 INFO L87 Difference]: Start difference. First operand 40036 states and 122218 transitions. Second operand has 33 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:47,514 INFO L93 Difference]: Finished difference Result 70445 states and 209974 transitions. [2022-11-16 15:54:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 15:54:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2022-11-16 15:54:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:47,703 INFO L225 Difference]: With dead ends: 70445 [2022-11-16 15:54:47,703 INFO L226 Difference]: Without dead ends: 70442 [2022-11-16 15:54:47,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 4 IntricatePredicates, 6 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=525, Invalid=2198, Unknown=49, NotChecked=420, Total=3192 [2022-11-16 15:54:47,704 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1033 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2681 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:47,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 305 Invalid, 5528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2540 Invalid, 0 Unknown, 2681 Unchecked, 4.2s Time] [2022-11-16 15:54:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70442 states. [2022-11-16 15:54:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70442 to 49869. [2022-11-16 15:54:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49869 states, 49844 states have (on average 3.069135703394591) internal successors, (152978), 49868 states have internal predecessors, (152978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49869 states to 49869 states and 152978 transitions. [2022-11-16 15:54:48,900 INFO L78 Accepts]: Start accepts. Automaton has 49869 states and 152978 transitions. Word has length 32 [2022-11-16 15:54:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:48,900 INFO L495 AbstractCegarLoop]: Abstraction has 49869 states and 152978 transitions. [2022-11-16 15:54:48,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.0) internal successors, (64), 32 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 49869 states and 152978 transitions. [2022-11-16 15:54:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:54:48,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:48,912 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, 1] [2022-11-16 15:54:48,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:49,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:49,113 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1819858714, now seen corresponding path program 2 times [2022-11-16 15:54:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:49,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438568747] [2022-11-16 15:54:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:49,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:49,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063943357] [2022-11-16 15:54:49,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 15:54:49,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:49,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:49,137 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:49,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 15:54:49,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 15:54:49,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:54:49,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 15:54:49,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:54:50,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:50,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:50,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438568747] [2022-11-16 15:54:50,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 15:54:50,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063943357] [2022-11-16 15:54:50,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063943357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:50,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:50,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 15:54:50,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904480073] [2022-11-16 15:54:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:50,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 15:54:50,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 15:54:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 15:54:50,381 INFO L87 Difference]: Start difference. First operand 49869 states and 152978 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:51,376 INFO L93 Difference]: Finished difference Result 51955 states and 157844 transitions. [2022-11-16 15:54:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:54:51,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2022-11-16 15:54:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:51,513 INFO L225 Difference]: With dead ends: 51955 [2022-11-16 15:54:51,513 INFO L226 Difference]: Without dead ends: 51906 [2022-11-16 15:54:51,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 15:54:51,514 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 70 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:51,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 237 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 62 Unchecked, 0.6s Time] [2022-11-16 15:54:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51906 states. [2022-11-16 15:54:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51906 to 51805. [2022-11-16 15:54:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51805 states, 51778 states have (on average 3.0436865077832285) internal successors, (157596), 51804 states have internal predecessors, (157596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51805 states to 51805 states and 157596 transitions. [2022-11-16 15:54:52,706 INFO L78 Accepts]: Start accepts. Automaton has 51805 states and 157596 transitions. Word has length 32 [2022-11-16 15:54:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:52,706 INFO L495 AbstractCegarLoop]: Abstraction has 51805 states and 157596 transitions. [2022-11-16 15:54:52,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 51805 states and 157596 transitions. [2022-11-16 15:54:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 15:54:52,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:52,717 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, 1] [2022-11-16 15:54:52,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:52,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 15:54:52,917 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-11-16 15:54:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash -503263582, now seen corresponding path program 3 times [2022-11-16 15:54:52,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:52,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273833231] [2022-11-16 15:54:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:52,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 15:54:52,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853933880] [2022-11-16 15:54:52,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 15:54:52,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:52,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:52,939 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:52,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ffa735-7bd9-40e8-8b24-2b914bf63159/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 15:54:53,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 15:54:53,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:54:53,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-16 15:54:53,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:53,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,548 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-16 15:54:53,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 15:54:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:53,617 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-16 15:54:53,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 40 [2022-11-16 15:54:53,699 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 15:54:53,812 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 15:54:53,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 15:54:53,993 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-16 15:54:53,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 15:54:54,248 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 [2022-11-16 15:54:54,258 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 15:54:54,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:54,443 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 57 treesize of output 53 [2022-11-16 15:54:54,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:54,458 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 18 treesize of output 20 [2022-11-16 15:54:54,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:54,726 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 57 treesize of output 53 [2022-11-16 15:54:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:54,741 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 18 treesize of output 20 [2022-11-16 15:54:55,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:55,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2022-11-16 15:54:55,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:55,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-16 15:54:55,723 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 11 treesize of output 7 [2022-11-16 15:54:55,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:55,805 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 21 treesize of output 20 [2022-11-16 15:54:55,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:55,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:55,922 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 30 treesize of output 32 [2022-11-16 15:54:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,066 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 32 treesize of output 30 [2022-11-16 15:54:56,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,113 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 32 treesize of output 30 [2022-11-16 15:54:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,170 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 32 treesize of output 30 [2022-11-16 15:54:56,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,248 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 39 treesize of output 44 [2022-11-16 15:54:56,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,416 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 41 treesize of output 37 [2022-11-16 15:54:56,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,675 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 41 treesize of output 37 [2022-11-16 15:54:56,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,736 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 41 treesize of output 37 [2022-11-16 15:54:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,795 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 41 treesize of output 37 [2022-11-16 15:54:56,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:56,843 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 41 treesize of output 37 [2022-11-16 15:54:57,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:57,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:57,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:57,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:57,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 15:54:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 15:54:57,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:57,401 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| (* c_thread2Thread1of1ForFork1_~j~0 4)))) (and (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int)) (= (select (select (let ((.cse0 (store |c_#race| c_~F~0.base v_ArrVal_3098))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int)) (= (select (select (let ((.cse2 (store |c_#race| c_~F~0.base v_ArrVal_3098))) (store .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int)) (= (select (select (let ((.cse3 (store |c_#race| c_~F~0.base v_ArrVal_3098))) (store .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int)) (= (select (select (let ((.cse4 (store |c_#race| c_~F~0.base v_ArrVal_3098))) (store .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)))) is different from false [2022-11-16 15:54:57,533 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| (* c_thread2Thread1of1ForFork1_~j~0 4)))) (and (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#race| c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse2 (store (store |c_#race| c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse3 (store (store |c_#race| c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse4 (store (store |c_#race| c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)))) is different from false [2022-11-16 15:54:58,161 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| (* c_thread2Thread1of1ForFork1_~j~0 4))) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse0 (store (store (let ((.cse2 (store |c_#race| c_~B~0.base v_ArrVal_3091))) (store .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse4 (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_3091))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse6 (store (store (let ((.cse7 (store |c_#race| c_~B~0.base v_ArrVal_3091))) (store .cse7 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse6 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse6 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse8 (store (store (let ((.cse9 (store |c_#race| c_~B~0.base v_ArrVal_3091))) (store .cse9 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse8 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse8 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) is different from false [2022-11-16 15:54:58,265 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse1 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| (* c_thread2Thread1of1ForFork1_~j~0 4))) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse4 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse11 0)))) (and (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse0 (store (store (let ((.cse2 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse5 (store (store (let ((.cse6 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse5 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse5 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse7 (store (store (let ((.cse8 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse8 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse7 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse7 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse9 (store (store (let ((.cse10 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse10 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse9 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse9 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse11) 0))))) is different from false [2022-11-16 15:54:58,330 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) (.cse12 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse1 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| (* c_thread2Thread1of1ForFork1_~j~0 4))) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse4 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse5 0) .cse12 0)))) (and (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse0 (store (store (let ((.cse2 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse5) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse6 (store (store (let ((.cse7 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse7 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse6 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse6 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= (select (select (let ((.cse8 (store (store (let ((.cse9 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse9 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse8 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse8 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_3098 (Array Int Int)) (v_ArrVal_3100 Int) (v_ArrVal_3091 (Array Int Int)) (v_ArrVal_3094 (Array Int Int))) (= 0 (select (select (let ((.cse10 (store (store (let ((.cse11 (store .cse4 c_~B~0.base v_ArrVal_3091))) (store .cse11 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~B~0.base v_ArrVal_3094) c_~F~0.base v_ArrVal_3098))) (store .cse10 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse10 |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse1 v_ArrVal_3100))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse12)))))) is different from false [2022-11-16 15:54:58,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:58,368 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 3 case distinctions, treesize of input 137 treesize of output 94 [2022-11-16 15:54:58,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 15:54:58,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1120626 treesize of output 1115348 [2022-11-16 15:55:02,101 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 1428662 treesize of output 1305654 [2022-11-16 15:55:06,239 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 1370422 treesize of output 1326390 [2022-11-16 15:55:11,006 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 1367862 treesize of output 1331958