./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-index.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-index.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --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 04b5785f32baf312774bbdd81055e04eea16b74acd932ddd06ae0cc7f49160c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:08:13,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:13,723 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-12 00:08:13,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:13,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:13,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:13,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:13,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:13,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:13,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:13,788 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:13,789 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:13,790 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:13,791 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:08:13,792 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:13,792 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:13,792 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:08:13,793 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:08:13,793 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:13,794 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:08:13,795 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:08:13,796 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:08:13,797 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:13,797 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:08:13,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:08:13,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:13,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:08:13,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:13,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:08:13,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:13,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:08:13,801 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 00:08:13,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:08:13,802 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:08:13,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:08:13,802 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:13,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:13,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:13,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:13,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:13,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:13,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:08:13,804 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:08:13,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:08:13,805 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:08:13,805 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:13,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:13,806 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04b5785f32baf312774bbdd81055e04eea16b74acd932ddd06ae0cc7f49160c1 [2023-11-12 00:08:14,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:14,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:14,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:14,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:14,135 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:14,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-index.i [2023-11-12 00:08:17,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:17,700 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:17,701 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/sv-benchmarks/c/pthread-race-challenges/per-thread-array-index.i [2023-11-12 00:08:17,727 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/data/e09e5f77d/180dd6d039134d7c96cef9b5c2e16389/FLAG49cabaedd [2023-11-12 00:08:17,745 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/data/e09e5f77d/180dd6d039134d7c96cef9b5c2e16389 [2023-11-12 00:08:17,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:17,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:17,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:17,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:17,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:17,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:17" (1/1) ... [2023-11-12 00:08:17,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccfc34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:17, skipping insertion in model container [2023-11-12 00:08:17,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:17" (1/1) ... [2023-11-12 00:08:17,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:18,013 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:08:18,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:18,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:08:18,357 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:08:18,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:18,500 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:08:18,508 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:08:18,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18 WrapperNode [2023-11-12 00:08:18,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:18,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:18,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:08:18,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:08:18,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,605 INFO L138 Inliner]: procedures = 266, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-11-12 00:08:18,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:18,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:08:18,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:08:18,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:08:18,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:08:18,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:08:18,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:08:18,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:08:18,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (1/1) ... [2023-11-12 00:08:18,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:18,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:18,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:08:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:08:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:08:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:08:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:08:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:08:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:08:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:08:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 00:08:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 00:08:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:08:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:08:18,794 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:08:18,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:08:19,034 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:08:19,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:08:19,299 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:08:19,307 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:08:19,308 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:08:19,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:19 BoogieIcfgContainer [2023-11-12 00:08:19,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:08:19,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:08:19,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:08:19,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:08:19,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:08:17" (1/3) ... [2023-11-12 00:08:19,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a7ed03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:19, skipping insertion in model container [2023-11-12 00:08:19,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:18" (2/3) ... [2023-11-12 00:08:19,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a7ed03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:19, skipping insertion in model container [2023-11-12 00:08:19,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:19" (3/3) ... [2023-11-12 00:08:19,329 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-array-index.i [2023-11-12 00:08:19,340 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:08:19,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:08:19,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 00:08:19,353 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:08:19,439 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 00:08:19,477 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:08:19,508 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 115 transitions, 237 flow [2023-11-12 00:08:19,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 115 transitions, 237 flow [2023-11-12 00:08:19,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 237 flow [2023-11-12 00:08:19,600 INFO L124 PetriNetUnfolderBase]: 6/167 cut-off events. [2023-11-12 00:08:19,601 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 00:08:19,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 6/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 351 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2023-11-12 00:08:19,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 2242 [2023-11-12 00:08:33,989 INFO L134 LiptonReduction]: Checked pairs total: 11446 [2023-11-12 00:08:33,990 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-12 00:08:34,000 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 48 transitions, 103 flow [2023-11-12 00:08:34,055 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 385 states, 354 states have (on average 1.9519774011299436) internal successors, (691), 384 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:34,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:08:34,082 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=LoopHeads, 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;@3cd1da00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:08:34,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-12 00:08:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 354 states have (on average 1.9519774011299436) internal successors, (691), 384 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:08:34,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:34,092 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:08:34,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-12 00:08:34,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash 387, now seen corresponding path program 1 times [2023-11-12 00:08:34,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:34,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568296849] [2023-11-12 00:08:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:34,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568296849] [2023-11-12 00:08:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568296849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:08:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871543001] [2023-11-12 00:08:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:34,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:08:34,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:08:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:08:34,267 INFO L87 Difference]: Start difference. First operand has 385 states, 354 states have (on average 1.9519774011299436) internal successors, (691), 384 states have internal predecessors, (691), 0 states have call successors, (0), 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) [2023-11-12 00:08:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:34,350 INFO L93 Difference]: Finished difference Result 339 states and 603 transitions. [2023-11-12 00:08:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:08:34,353 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 [2023-11-12 00:08:34,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:34,375 INFO L225 Difference]: With dead ends: 339 [2023-11-12 00:08:34,376 INFO L226 Difference]: Without dead ends: 335 [2023-11-12 00:08:34,378 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 [2023-11-12 00:08:34,383 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:34,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:08:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-12 00:08:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-11-12 00:08:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 319 states have (on average 1.871473354231975) internal successors, (597), 334 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 597 transitions. [2023-11-12 00:08:34,481 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 597 transitions. Word has length 1 [2023-11-12 00:08:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:34,481 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 597 transitions. [2023-11-12 00:08:34,482 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) [2023-11-12 00:08:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 597 transitions. [2023-11-12 00:08:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:08:34,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:34,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:08:34,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-12 00:08:34,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 306528310, now seen corresponding path program 1 times [2023-11-12 00:08:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:34,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468424392] [2023-11-12 00:08:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:34,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:35,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468424392] [2023-11-12 00:08:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468424392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:08:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244631045] [2023-11-12 00:08:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:35,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:35,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:35,154 INFO L87 Difference]: Start difference. First operand 335 states and 597 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:35,446 INFO L93 Difference]: Finished difference Result 476 states and 837 transitions. [2023-11-12 00:08:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:08:35,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:08:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:35,450 INFO L225 Difference]: With dead ends: 476 [2023-11-12 00:08:35,451 INFO L226 Difference]: Without dead ends: 462 [2023-11-12 00:08:35,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:35,452 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:35,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 19 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:08:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-12 00:08:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 385. [2023-11-12 00:08:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 372 states have (on average 1.8602150537634408) internal successors, (692), 384 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 692 transitions. [2023-11-12 00:08:35,470 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 692 transitions. Word has length 7 [2023-11-12 00:08:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:35,470 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 692 transitions. [2023-11-12 00:08:35,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 692 transitions. [2023-11-12 00:08:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:08:35,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:35,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:35,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:08:35,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-12 00:08:35,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash -884729061, now seen corresponding path program 1 times [2023-11-12 00:08:35,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:35,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636724379] [2023-11-12 00:08:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:35,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636724379] [2023-11-12 00:08:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636724379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:35,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:08:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780620116] [2023-11-12 00:08:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:35,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:35,926 INFO L87 Difference]: Start difference. First operand 385 states and 692 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:36,112 INFO L93 Difference]: Finished difference Result 412 states and 736 transitions. [2023-11-12 00:08:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:08:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-11-12 00:08:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:36,116 INFO L225 Difference]: With dead ends: 412 [2023-11-12 00:08:36,116 INFO L226 Difference]: Without dead ends: 384 [2023-11-12 00:08:36,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:36,117 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:36,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:08:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-12 00:08:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2023-11-12 00:08:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 367 states have (on average 1.8719346049046321) internal successors, (687), 378 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 687 transitions. [2023-11-12 00:08:36,131 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 687 transitions. Word has length 14 [2023-11-12 00:08:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:36,132 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 687 transitions. [2023-11-12 00:08:36,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 687 transitions. [2023-11-12 00:08:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:08:36,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:36,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:36,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:08:36,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-12 00:08:36,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2124654859, now seen corresponding path program 1 times [2023-11-12 00:08:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:36,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634069731] [2023-11-12 00:08:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:36,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634069731] [2023-11-12 00:08:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634069731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:36,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:36,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:08:36,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221011716] [2023-11-12 00:08:36,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:36,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:36,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:36,522 INFO L87 Difference]: Start difference. First operand 379 states and 687 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:36,904 INFO L93 Difference]: Finished difference Result 481 states and 872 transitions. [2023-11-12 00:08:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:08:36,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 00:08:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:36,909 INFO L225 Difference]: With dead ends: 481 [2023-11-12 00:08:36,910 INFO L226 Difference]: Without dead ends: 460 [2023-11-12 00:08:36,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:36,911 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 68 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:36,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 47 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:08:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-12 00:08:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2023-11-12 00:08:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 448 states have (on average 1.859375) internal successors, (833), 459 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 833 transitions. [2023-11-12 00:08:36,929 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 833 transitions. Word has length 16 [2023-11-12 00:08:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:36,930 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 833 transitions. [2023-11-12 00:08:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 833 transitions. [2023-11-12 00:08:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:08:36,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:36,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-12 00:08:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:08:36,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-12 00:08:36,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 960106128, now seen corresponding path program 1 times [2023-11-12 00:08:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:36,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056600910] [2023-11-12 00:08:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:08:36,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:08:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:08:37,029 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:08:37,029 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:08:37,033 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-12 00:08:37,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-12 00:08:37,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-12 00:08:37,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-12 00:08:37,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-12 00:08:37,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-12 00:08:37,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-12 00:08:37,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-12 00:08:37,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-12 00:08:37,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-12 00:08:37,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-12 00:08:37,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:08:37,040 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 00:08:37,042 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:08:37,042 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 00:08:37,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:08:37,088 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:08:37,089 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 136 transitions, 288 flow [2023-11-12 00:08:37,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 136 transitions, 288 flow [2023-11-12 00:08:37,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 136 transitions, 288 flow [2023-11-12 00:08:37,190 INFO L124 PetriNetUnfolderBase]: 11/295 cut-off events. [2023-11-12 00:08:37,190 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 00:08:37,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 11/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 748 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 169. Up to 8 conditions per place. [2023-11-12 00:08:37,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 5700 [2023-11-12 00:08:58,376 INFO L134 LiptonReduction]: Checked pairs total: 28326 [2023-11-12 00:08:58,377 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-11-12 00:08:58,378 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 61 transitions, 138 flow [2023-11-12 00:08:58,592 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4266 states, 4154 states have (on average 2.7022147327876747) internal successors, (11225), 4265 states have internal predecessors, (11225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:58,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:08:58,595 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=LoopHeads, 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;@3cd1da00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:08:58,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 00:08:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 4266 states, 4154 states have (on average 2.7022147327876747) internal successors, (11225), 4265 states have internal predecessors, (11225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:08:58,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:58,612 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:08:58,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:08:58,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash 640, now seen corresponding path program 1 times [2023-11-12 00:08:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281002325] [2023-11-12 00:08:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:58,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:58,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:58,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281002325] [2023-11-12 00:08:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281002325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:58,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:58,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:08:58,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834160689] [2023-11-12 00:08:58,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:08:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:58,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:08:58,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:08:58,639 INFO L87 Difference]: Start difference. First operand has 4266 states, 4154 states have (on average 2.7022147327876747) internal successors, (11225), 4265 states have internal predecessors, (11225), 0 states have call successors, (0), 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) [2023-11-12 00:08:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:58,707 INFO L93 Difference]: Finished difference Result 3418 states and 8876 transitions. [2023-11-12 00:08:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:08:58,708 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 [2023-11-12 00:08:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:58,740 INFO L225 Difference]: With dead ends: 3418 [2023-11-12 00:08:58,740 INFO L226 Difference]: Without dead ends: 3410 [2023-11-12 00:08:58,741 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 [2023-11-12 00:08:58,742 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:58,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:08:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2023-11-12 00:08:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3410. [2023-11-12 00:08:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3364 states have (on average 2.633769322235434) internal successors, (8860), 3409 states have internal predecessors, (8860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 8860 transitions. [2023-11-12 00:08:58,889 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 8860 transitions. Word has length 1 [2023-11-12 00:08:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:58,889 INFO L495 AbstractCegarLoop]: Abstraction has 3410 states and 8860 transitions. [2023-11-12 00:08:58,890 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) [2023-11-12 00:08:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 8860 transitions. [2023-11-12 00:08:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:08:58,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:58,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:08:58,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:08:58,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2120528556, now seen corresponding path program 1 times [2023-11-12 00:08:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061476737] [2023-11-12 00:08:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:59,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061476737] [2023-11-12 00:08:59,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061476737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:59,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:59,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:08:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731379632] [2023-11-12 00:08:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:08:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:08:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:59,126 INFO L87 Difference]: Start difference. First operand 3410 states and 8860 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:59,631 INFO L93 Difference]: Finished difference Result 5827 states and 15048 transitions. [2023-11-12 00:08:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:08:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:08:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:59,687 INFO L225 Difference]: With dead ends: 5827 [2023-11-12 00:08:59,687 INFO L226 Difference]: Without dead ends: 5795 [2023-11-12 00:08:59,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:08:59,688 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:59,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 30 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:08:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2023-11-12 00:08:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 4329. [2023-11-12 00:08:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 4286 states have (on average 2.6362575828278114) internal successors, (11299), 4328 states have internal predecessors, (11299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 11299 transitions. [2023-11-12 00:08:59,879 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 11299 transitions. Word has length 7 [2023-11-12 00:08:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:59,879 INFO L495 AbstractCegarLoop]: Abstraction has 4329 states and 11299 transitions. [2023-11-12 00:08:59,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:08:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 11299 transitions. [2023-11-12 00:08:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:08:59,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:59,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:59,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:08:59,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:08:59,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1836908894, now seen corresponding path program 1 times [2023-11-12 00:08:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:59,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353521207] [2023-11-12 00:08:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:00,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353521207] [2023-11-12 00:09:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353521207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:00,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:09:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198252023] [2023-11-12 00:09:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:09:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:09:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:00,244 INFO L87 Difference]: Start difference. First operand 4329 states and 11299 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:00,549 INFO L93 Difference]: Finished difference Result 4752 states and 12330 transitions. [2023-11-12 00:09:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:09:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-11-12 00:09:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:00,591 INFO L225 Difference]: With dead ends: 4752 [2023-11-12 00:09:00,591 INFO L226 Difference]: Without dead ends: 4689 [2023-11-12 00:09:00,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:00,592 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 44 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:00,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 37 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:09:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2023-11-12 00:09:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 4592. [2023-11-12 00:09:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4550 states have (on average 2.641098901098901) internal successors, (12017), 4591 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 12017 transitions. [2023-11-12 00:09:00,919 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 12017 transitions. Word has length 14 [2023-11-12 00:09:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:00,923 INFO L495 AbstractCegarLoop]: Abstraction has 4592 states and 12017 transitions. [2023-11-12 00:09:00,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 12017 transitions. [2023-11-12 00:09:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:09:00,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:00,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:00,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:09:00,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:09:00,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1281937530, now seen corresponding path program 1 times [2023-11-12 00:09:00,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:00,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428639714] [2023-11-12 00:09:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:00,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:01,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428639714] [2023-11-12 00:09:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428639714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:09:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771720] [2023-11-12 00:09:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:09:01,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:09:01,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:01,309 INFO L87 Difference]: Start difference. First operand 4592 states and 12017 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:02,098 INFO L93 Difference]: Finished difference Result 7335 states and 19512 transitions. [2023-11-12 00:09:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:09:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 00:09:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:02,162 INFO L225 Difference]: With dead ends: 7335 [2023-11-12 00:09:02,162 INFO L226 Difference]: Without dead ends: 7300 [2023-11-12 00:09:02,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:02,164 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 107 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:02,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 79 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:09:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7300 states. [2023-11-12 00:09:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7300 to 5925. [2023-11-12 00:09:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5925 states, 5883 states have (on average 2.6727859935407103) internal successors, (15724), 5924 states have internal predecessors, (15724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 15724 transitions. [2023-11-12 00:09:02,433 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 15724 transitions. Word has length 16 [2023-11-12 00:09:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:02,434 INFO L495 AbstractCegarLoop]: Abstraction has 5925 states and 15724 transitions. [2023-11-12 00:09:02,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 15724 transitions. [2023-11-12 00:09:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:09:02,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:02,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:02,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:09:02,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:09:02,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1738267289, now seen corresponding path program 1 times [2023-11-12 00:09:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112130692] [2023-11-12 00:09:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:02,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:09:02,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112130692] [2023-11-12 00:09:02,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112130692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:02,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:02,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:09:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768683283] [2023-11-12 00:09:02,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:02,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:09:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:02,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:09:02,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:02,988 INFO L87 Difference]: Start difference. First operand 5925 states and 15724 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:04,003 INFO L93 Difference]: Finished difference Result 8617 states and 22850 transitions. [2023-11-12 00:09:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:09:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2023-11-12 00:09:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:04,042 INFO L225 Difference]: With dead ends: 8617 [2023-11-12 00:09:04,042 INFO L226 Difference]: Without dead ends: 8603 [2023-11-12 00:09:04,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:09:04,043 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 151 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:04,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 82 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:09:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8603 states. [2023-11-12 00:09:04,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8603 to 5802. [2023-11-12 00:09:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 5761 states have (on average 2.658739802117688) internal successors, (15317), 5801 states have internal predecessors, (15317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 15317 transitions. [2023-11-12 00:09:04,298 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 15317 transitions. Word has length 20 [2023-11-12 00:09:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:04,300 INFO L495 AbstractCegarLoop]: Abstraction has 5802 states and 15317 transitions. [2023-11-12 00:09:04,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 15317 transitions. [2023-11-12 00:09:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:09:04,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:04,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:04,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:09:04,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:09:04,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash -281328664, now seen corresponding path program 1 times [2023-11-12 00:09:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:04,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227913918] [2023-11-12 00:09:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:04,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227913918] [2023-11-12 00:09:04,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227913918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:09:04,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532057104] [2023-11-12 00:09:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:04,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:04,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:04,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:04,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:09:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:04,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:09:04,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:05,042 INFO L351 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 [2023-11-12 00:09:05,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:09:05,079 INFO L351 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 16 treesize of output 11 [2023-11-12 00:09:05,102 INFO L351 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 19 treesize of output 18 [2023-11-12 00:09:05,162 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:05,162 INFO L351 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 26 treesize of output 28 [2023-11-12 00:09:05,219 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:05,219 INFO L351 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 33 treesize of output 38 [2023-11-12 00:09:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:05,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:05,298 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#race| c_~datas~0.base v_ArrVal_284) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) is different from false [2023-11-12 00:09:05,312 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:05,313 INFO L351 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 1 case distinctions, treesize of input 18 treesize of output 19 [2023-11-12 00:09:05,318 INFO L351 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 30 treesize of output 22 [2023-11-12 00:09:05,323 INFO L351 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 5 treesize of output 3 [2023-11-12 00:09:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:09:05,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532057104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:09:05,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1417373224] [2023-11-12 00:09:05,356 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:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) 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) [2023-11-12 00:09:05,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:09:05,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-12 00:09:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926983472] [2023-11-12 00:09:05,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:09:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:09:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:09:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=128, Unknown=1, NotChecked=24, Total=210 [2023-11-12 00:09:05,361 INFO L87 Difference]: Start difference. First operand 5802 states and 15317 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:05,724 INFO L93 Difference]: Finished difference Result 5488 states and 14451 transitions. [2023-11-12 00:09:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:09:05,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2023-11-12 00:09:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:05,746 INFO L225 Difference]: With dead ends: 5488 [2023-11-12 00:09:05,747 INFO L226 Difference]: Without dead ends: 5441 [2023-11-12 00:09:05,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=179, Unknown=1, NotChecked=30, Total=306 [2023-11-12 00:09:05,748 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:05,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 150 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2023-11-12 00:09:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2023-11-12 00:09:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 4220. [2023-11-12 00:09:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4220 states, 4200 states have (on average 2.6395238095238094) internal successors, (11086), 4219 states have internal predecessors, (11086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4220 states to 4220 states and 11086 transitions. [2023-11-12 00:09:05,948 INFO L78 Accepts]: Start accepts. Automaton has 4220 states and 11086 transitions. Word has length 20 [2023-11-12 00:09:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:05,948 INFO L495 AbstractCegarLoop]: Abstraction has 4220 states and 11086 transitions. [2023-11-12 00:09:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4220 states and 11086 transitions. [2023-11-12 00:09:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 00:09:05,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:05,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:05,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:06,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:09:06,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:09:06,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash -4413794, now seen corresponding path program 1 times [2023-11-12 00:09:06,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:06,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730430392] [2023-11-12 00:09:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:06,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:09:06,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730430392] [2023-11-12 00:09:06,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730430392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:06,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:06,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:09:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291690342] [2023-11-12 00:09:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:06,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:09:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:09:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:06,540 INFO L87 Difference]: Start difference. First operand 4220 states and 11086 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:07,533 INFO L93 Difference]: Finished difference Result 6552 states and 17320 transitions. [2023-11-12 00:09:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:09:07,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-12 00:09:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:07,560 INFO L225 Difference]: With dead ends: 6552 [2023-11-12 00:09:07,561 INFO L226 Difference]: Without dead ends: 6503 [2023-11-12 00:09:07,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:09:07,562 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:07,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 102 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:09:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2023-11-12 00:09:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 5242. [2023-11-12 00:09:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5222 states have (on average 2.6514745308310994) internal successors, (13846), 5241 states have internal predecessors, (13846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 13846 transitions. [2023-11-12 00:09:07,741 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 13846 transitions. Word has length 26 [2023-11-12 00:09:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:07,742 INFO L495 AbstractCegarLoop]: Abstraction has 5242 states and 13846 transitions. [2023-11-12 00:09:07,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 13846 transitions. [2023-11-12 00:09:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 00:09:07,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:07,745 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] [2023-11-12 00:09:07,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:09:07,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:09:07,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:07,746 INFO L85 PathProgramCache]: Analyzing trace with hash -397890423, now seen corresponding path program 1 times [2023-11-12 00:09:07,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:07,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638589811] [2023-11-12 00:09:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:07,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:07,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:07,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638589811] [2023-11-12 00:09:07,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638589811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:09:07,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056355028] [2023-11-12 00:09:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:07,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:07,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:07,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:07,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:09:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:08,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:09:08,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:08,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:09:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056355028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:09:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491346147] [2023-11-12 00:09:08,173 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:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) 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) [2023-11-12 00:09:08,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:09:08,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-12 00:09:08,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197977795] [2023-11-12 00:09:08,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:09:08,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:09:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:09:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:09:08,177 INFO L87 Difference]: Start difference. First operand 5242 states and 13846 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:08,379 INFO L93 Difference]: Finished difference Result 4426 states and 11467 transitions. [2023-11-12 00:09:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:09:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-12 00:09:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:08,397 INFO L225 Difference]: With dead ends: 4426 [2023-11-12 00:09:08,398 INFO L226 Difference]: Without dead ends: 4426 [2023-11-12 00:09:08,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:09:08,399 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 193 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:08,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 153 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:09:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2023-11-12 00:09:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4290. [2023-11-12 00:09:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4273 states have (on average 2.627194008893049) internal successors, (11226), 4289 states have internal predecessors, (11226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 11226 transitions. [2023-11-12 00:09:08,528 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 11226 transitions. Word has length 26 [2023-11-12 00:09:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:08,528 INFO L495 AbstractCegarLoop]: Abstraction has 4290 states and 11226 transitions. [2023-11-12 00:09:08,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:09:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 11226 transitions. [2023-11-12 00:09:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:09:08,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:08,532 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] [2023-11-12 00:09:08,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:09:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 00:09:08,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-12 00:09:08,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash -921857020, now seen corresponding path program 1 times [2023-11-12 00:09:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:08,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023734257] [2023-11-12 00:09:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:09:09,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023734257] [2023-11-12 00:09:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023734257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:09:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146401009] [2023-11-12 00:09:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:09,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:09:09,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:09,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:09:09,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6823635c-391b-47f3-aa94-eff6c34af672/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:09:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:09,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 00:09:09,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:09:09,654 INFO L351 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 60 treesize of output 58 [2023-11-12 00:09:09,807 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-12 00:09:09,808 INFO L351 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2023-11-12 00:09:09,850 INFO L351 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 25 treesize of output 13 [2023-11-12 00:09:09,875 INFO L351 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 [2023-11-12 00:09:09,896 INFO L351 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 [2023-11-12 00:09:09,919 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:09,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 42 [2023-11-12 00:09:09,983 INFO L351 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 44 treesize of output 35 [2023-11-12 00:09:10,005 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:09:10,006 INFO L351 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 [2023-11-12 00:09:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:09:10,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:09:10,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146401009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:10,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:09:10,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 11 [2023-11-12 00:09:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071462027] [2023-11-12 00:09:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:10,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:09:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:09:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:09:10,026 INFO L87 Difference]: Start difference. First operand 4290 states and 11226 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)