./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh --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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:37:48,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:37:49,061 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 17:37:49,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:37:49,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:37:49,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:37:49,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:37:49,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:37:49,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:37:49,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:37:49,095 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:37:49,096 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:37:49,096 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:37:49,097 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:37:49,097 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:37:49,098 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:37:49,099 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:37:49,099 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:37:49,100 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:37:49,101 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:37:49,101 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:37:49,102 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:37:49,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:37:49,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:37:49,104 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:37:49,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:37:49,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:37:49,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:37:49,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:37:49,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:37:49,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:37:49,106 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 17:37:49,107 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:37:49,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:37:49,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:37:49,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:37:49,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:37:49,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:37:49,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:37:49,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:37:49,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:37:49,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:37:49,109 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:37:49,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:37:49,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:37:49,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:37:49,110 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:37:49,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:37:49,110 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_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-12-02 17:37:49,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:37:49,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:37:49,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:37:49,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:37:49,361 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:37:49,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-12-02 17:37:52,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:37:52,239 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:37:52,239 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-12-02 17:37:52,247 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/data/4483aa57e/32ac16eabd8f48b0abdd3d6ffaab38f5/FLAG08dc1890c [2023-12-02 17:37:52,258 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/data/4483aa57e/32ac16eabd8f48b0abdd3d6ffaab38f5 [2023-12-02 17:37:52,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:37:52,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:37:52,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:37:52,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:37:52,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:37:52,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c2350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52, skipping insertion in model container [2023-12-02 17:37:52,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:37:52,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:37:52,470 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:37:52,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:37:52,522 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:37:52,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52 WrapperNode [2023-12-02 17:37:52,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:37:52,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:37:52,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:37:52,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:37:52,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,580 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 353 [2023-12-02 17:37:52,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:37:52,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:37:52,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:37:52,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:37:52,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,623 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:37:52,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:37:52,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:37:52,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:37:52,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (1/1) ... [2023-12-02 17:37:52,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:37:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:37:52,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:37:52,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:37:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:37:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:37:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:37:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:37:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:37:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:37:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 17:37:52,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 17:37:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 17:37:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 17:37:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:37:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:37:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:37:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:37:52,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:37:52,713 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 17:37:52,837 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:37:52,839 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:37:53,526 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:37:53,546 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:37:53,547 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-02 17:37:53,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:53 BoogieIcfgContainer [2023-12-02 17:37:53,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:37:53,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:37:53,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:37:53,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:37:53,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:37:52" (1/3) ... [2023-12-02 17:37:53,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9caf212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:37:53, skipping insertion in model container [2023-12-02 17:37:53,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:37:52" (2/3) ... [2023-12-02 17:37:53,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9caf212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:37:53, skipping insertion in model container [2023-12-02 17:37:53,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:37:53" (3/3) ... [2023-12-02 17:37:53,558 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-12-02 17:37:53,567 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 17:37:53,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:37:53,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-12-02 17:37:53,579 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 17:37:53,701 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 17:37:53,738 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 531 places, 554 transitions, 1122 flow [2023-12-02 17:37:54,424 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21265 states, 21107 states have (on average 2.9367034633060123) internal successors, (61985), 21264 states have internal predecessors, (61985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:54,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:37:54,451 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;@2735c6fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:37:54,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-12-02 17:37:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 21265 states, 21107 states have (on average 2.9367034633060123) internal successors, (61985), 21264 states have internal predecessors, (61985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:37:54,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:54,507 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] [2023-12-02 17:37:54,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:37:54,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:54,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1499027220, now seen corresponding path program 1 times [2023-12-02 17:37:54,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:54,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397340977] [2023-12-02 17:37:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:54,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:37:54,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:54,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397340977] [2023-12-02 17:37:54,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397340977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:54,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:54,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:37:54,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967705200] [2023-12-02 17:37:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:54,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:54,820 INFO L87 Difference]: Start difference. First operand has 21265 states, 21107 states have (on average 2.9367034633060123) internal successors, (61985), 21264 states have internal predecessors, (61985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:55,208 INFO L93 Difference]: Finished difference Result 21264 states and 60665 transitions. [2023-12-02 17:37:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 17:37:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:55,377 INFO L225 Difference]: With dead ends: 21264 [2023-12-02 17:37:55,377 INFO L226 Difference]: Without dead ends: 21253 [2023-12-02 17:37:55,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:55,381 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 2 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:55,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 979 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:37:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21253 states. [2023-12-02 17:37:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21253 to 21253. [2023-12-02 17:37:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21253 states, 21096 states have (on average 2.87514220705347) internal successors, (60654), 21252 states have internal predecessors, (60654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21253 states to 21253 states and 60654 transitions. [2023-12-02 17:37:56,411 INFO L78 Accepts]: Start accepts. Automaton has 21253 states and 60654 transitions. Word has length 24 [2023-12-02 17:37:56,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:56,412 INFO L495 AbstractCegarLoop]: Abstraction has 21253 states and 60654 transitions. [2023-12-02 17:37:56,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 21253 states and 60654 transitions. [2023-12-02 17:37:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 17:37:56,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:56,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:56,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:37:56,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:37:56,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 834311248, now seen corresponding path program 1 times [2023-12-02 17:37:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608449767] [2023-12-02 17:37:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:37:56,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:56,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608449767] [2023-12-02 17:37:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608449767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:37:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449599450] [2023-12-02 17:37:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:56,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:56,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:56,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:56,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:56,583 INFO L87 Difference]: Start difference. First operand 21253 states and 60654 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:56,979 INFO L93 Difference]: Finished difference Result 20509 states and 58524 transitions. [2023-12-02 17:37:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-02 17:37:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:57,060 INFO L225 Difference]: With dead ends: 20509 [2023-12-02 17:37:57,060 INFO L226 Difference]: Without dead ends: 20509 [2023-12-02 17:37:57,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:57,062 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 456 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:57,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 502 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:37:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2023-12-02 17:37:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 20509. [2023-12-02 17:37:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20509 states, 20384 states have (on average 2.8710753532182105) internal successors, (58524), 20508 states have internal predecessors, (58524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20509 states to 20509 states and 58524 transitions. [2023-12-02 17:37:57,866 INFO L78 Accepts]: Start accepts. Automaton has 20509 states and 58524 transitions. Word has length 28 [2023-12-02 17:37:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:57,867 INFO L495 AbstractCegarLoop]: Abstraction has 20509 states and 58524 transitions. [2023-12-02 17:37:57,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 20509 states and 58524 transitions. [2023-12-02 17:37:57,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 17:37:57,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:57,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:37:57,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:37:57,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1998856167, now seen corresponding path program 1 times [2023-12-02 17:37:57,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:57,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573477855] [2023-12-02 17:37:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:37:58,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:58,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573477855] [2023-12-02 17:37:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573477855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:37:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686187292] [2023-12-02 17:37:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:58,028 INFO L87 Difference]: Start difference. First operand 20509 states and 58524 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 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) [2023-12-02 17:37:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:58,200 INFO L93 Difference]: Finished difference Result 20508 states and 58523 transitions. [2023-12-02 17:37:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 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 40 [2023-12-02 17:37:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:58,273 INFO L225 Difference]: With dead ends: 20508 [2023-12-02 17:37:58,273 INFO L226 Difference]: Without dead ends: 20508 [2023-12-02 17:37:58,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:58,275 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 2 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:58,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 936 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:37:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2023-12-02 17:37:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20508. [2023-12-02 17:37:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20508 states, 20384 states have (on average 2.871026295133438) internal successors, (58523), 20507 states have internal predecessors, (58523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20508 states to 20508 states and 58523 transitions. [2023-12-02 17:37:59,034 INFO L78 Accepts]: Start accepts. Automaton has 20508 states and 58523 transitions. Word has length 40 [2023-12-02 17:37:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:59,035 INFO L495 AbstractCegarLoop]: Abstraction has 20508 states and 58523 transitions. [2023-12-02 17:37:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 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) [2023-12-02 17:37:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 20508 states and 58523 transitions. [2023-12-02 17:37:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 17:37:59,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:59,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:37:59,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:37:59,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -82021650, now seen corresponding path program 1 times [2023-12-02 17:37:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208719981] [2023-12-02 17:37:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:59,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:37:59,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208719981] [2023-12-02 17:37:59,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208719981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:59,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:59,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:37:59,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550786290] [2023-12-02 17:37:59,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:59,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:37:59,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:59,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:37:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:59,091 INFO L87 Difference]: Start difference. First operand 20508 states and 58523 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:59,261 INFO L93 Difference]: Finished difference Result 20131 states and 57453 transitions. [2023-12-02 17:37:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:37:59,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-02 17:37:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:59,340 INFO L225 Difference]: With dead ends: 20131 [2023-12-02 17:37:59,340 INFO L226 Difference]: Without dead ends: 20131 [2023-12-02 17:37:59,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:37:59,342 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 429 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:59,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 507 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:37:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20131 states. [2023-12-02 17:37:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20131 to 20131. [2023-12-02 17:37:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20131 states, 20028 states have (on average 2.8686339125224687) internal successors, (57453), 20130 states have internal predecessors, (57453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20131 states to 20131 states and 57453 transitions. [2023-12-02 17:37:59,960 INFO L78 Accepts]: Start accepts. Automaton has 20131 states and 57453 transitions. Word has length 44 [2023-12-02 17:37:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:59,960 INFO L495 AbstractCegarLoop]: Abstraction has 20131 states and 57453 transitions. [2023-12-02 17:37:59,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:37:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 20131 states and 57453 transitions. [2023-12-02 17:37:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 17:37:59,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:59,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:59,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:37:59,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:37:59,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash 747242976, now seen corresponding path program 1 times [2023-12-02 17:37:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222257281] [2023-12-02 17:37:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:59,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:37:59,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45222449] [2023-12-02 17:37:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:59,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:37:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:37:59,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:37:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:38:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:00,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:00,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:00,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:00,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222257281] [2023-12-02 17:38:00,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45222449] [2023-12-02 17:38:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45222449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:00,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136962982] [2023-12-02 17:38:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:00,128 INFO L87 Difference]: Start difference. First operand 20131 states and 57453 transitions. Second operand has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:00,264 INFO L93 Difference]: Finished difference Result 20130 states and 57452 transitions. [2023-12-02 17:38:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-02 17:38:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:00,334 INFO L225 Difference]: With dead ends: 20130 [2023-12-02 17:38:00,334 INFO L226 Difference]: Without dead ends: 20130 [2023-12-02 17:38:00,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:00,336 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:00,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 935 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20130 states. [2023-12-02 17:38:00,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20130 to 20130. [2023-12-02 17:38:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20130 states, 20028 states have (on average 2.8685839824246058) internal successors, (57452), 20129 states have internal predecessors, (57452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20130 states to 20130 states and 57452 transitions. [2023-12-02 17:38:00,919 INFO L78 Accepts]: Start accepts. Automaton has 20130 states and 57452 transitions. Word has length 69 [2023-12-02 17:38:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:00,919 INFO L495 AbstractCegarLoop]: Abstraction has 20130 states and 57452 transitions. [2023-12-02 17:38:00,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 20130 states and 57452 transitions. [2023-12-02 17:38:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 17:38:00,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:00,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:00,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:01,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:01,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash 300817931, now seen corresponding path program 1 times [2023-12-02 17:38:01,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:01,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581811385] [2023-12-02 17:38:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:01,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:01,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529456102] [2023-12-02 17:38:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:01,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:01,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:01,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:01,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:38:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:01,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:01,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:01,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:01,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581811385] [2023-12-02 17:38:01,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529456102] [2023-12-02 17:38:01,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529456102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:01,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:01,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:01,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001758598] [2023-12-02 17:38:01,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:01,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:01,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:01,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:01,258 INFO L87 Difference]: Start difference. First operand 20130 states and 57452 transitions. Second operand has 3 states, 2 states have (on average 36.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:01,340 INFO L93 Difference]: Finished difference Result 19592 states and 55891 transitions. [2023-12-02 17:38:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:01,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 36.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-02 17:38:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:01,379 INFO L225 Difference]: With dead ends: 19592 [2023-12-02 17:38:01,379 INFO L226 Difference]: Without dead ends: 19592 [2023-12-02 17:38:01,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:01,380 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 397 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:01,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 543 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19592 states. [2023-12-02 17:38:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19592 to 19592. [2023-12-02 17:38:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19592 states, 19504 states have (on average 2.8656173092698936) internal successors, (55891), 19591 states have internal predecessors, (55891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19592 states to 19592 states and 55891 transitions. [2023-12-02 17:38:01,792 INFO L78 Accepts]: Start accepts. Automaton has 19592 states and 55891 transitions. Word has length 72 [2023-12-02 17:38:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:01,792 INFO L495 AbstractCegarLoop]: Abstraction has 19592 states and 55891 transitions. [2023-12-02 17:38:01,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 36.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 19592 states and 55891 transitions. [2023-12-02 17:38:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 17:38:01,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:01,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:01,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:38:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:01,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:01,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash 541187617, now seen corresponding path program 1 times [2023-12-02 17:38:01,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:01,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196099159] [2023-12-02 17:38:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:02,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087323126] [2023-12-02 17:38:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:02,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:02,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:38:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:02,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 17:38:02,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:02,272 INFO L378 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 [2023-12-02 17:38:02,303 INFO L378 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 [2023-12-02 17:38:02,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:02,352 INFO L378 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 [2023-12-02 17:38:02,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:02,408 INFO L378 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 [2023-12-02 17:38:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:02,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:02,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196099159] [2023-12-02 17:38:02,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087323126] [2023-12-02 17:38:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087323126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:02,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 17:38:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208456266] [2023-12-02 17:38:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:02,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:38:02,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:38:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:38:02,454 INFO L87 Difference]: Start difference. First operand 19592 states and 55891 transitions. Second operand has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:03,061 INFO L93 Difference]: Finished difference Result 19644 states and 55946 transitions. [2023-12-02 17:38:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 17:38:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-02 17:38:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:03,106 INFO L225 Difference]: With dead ends: 19644 [2023-12-02 17:38:03,106 INFO L226 Difference]: Without dead ends: 19644 [2023-12-02 17:38:03,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:38:03,107 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 149 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:03,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2519 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:38:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19644 states. [2023-12-02 17:38:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19644 to 19622. [2023-12-02 17:38:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19622 states, 19534 states have (on average 2.862905702877035) internal successors, (55924), 19621 states have internal predecessors, (55924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19622 states to 19622 states and 55924 transitions. [2023-12-02 17:38:03,584 INFO L78 Accepts]: Start accepts. Automaton has 19622 states and 55924 transitions. Word has length 102 [2023-12-02 17:38:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:03,584 INFO L495 AbstractCegarLoop]: Abstraction has 19622 states and 55924 transitions. [2023-12-02 17:38:03,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19622 states and 55924 transitions. [2023-12-02 17:38:03,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 17:38:03,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:03,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:03,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:38:03,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:03,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:03,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash 783968234, now seen corresponding path program 1 times [2023-12-02 17:38:03,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:03,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38210773] [2023-12-02 17:38:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:03,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:03,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122204613] [2023-12-02 17:38:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:03,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:03,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:03,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:38:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:03,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:03,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:03,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:03,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38210773] [2023-12-02 17:38:03,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122204613] [2023-12-02 17:38:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122204613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:03,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:03,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802250094] [2023-12-02 17:38:03,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:03,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:03,933 INFO L87 Difference]: Start difference. First operand 19622 states and 55924 transitions. Second operand has 3 states, 2 states have (on average 51.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:04,177 INFO L93 Difference]: Finished difference Result 19621 states and 55923 transitions. [2023-12-02 17:38:04,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:04,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 51.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-02 17:38:04,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:04,224 INFO L225 Difference]: With dead ends: 19621 [2023-12-02 17:38:04,225 INFO L226 Difference]: Without dead ends: 19621 [2023-12-02 17:38:04,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:04,226 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 2 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:04,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 929 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19621 states. [2023-12-02 17:38:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19621 to 19621. [2023-12-02 17:38:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19621 states, 19534 states have (on average 2.86285451008498) internal successors, (55923), 19620 states have internal predecessors, (55923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19621 states to 19621 states and 55923 transitions. [2023-12-02 17:38:04,657 INFO L78 Accepts]: Start accepts. Automaton has 19621 states and 55923 transitions. Word has length 102 [2023-12-02 17:38:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 19621 states and 55923 transitions. [2023-12-02 17:38:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 51.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 19621 states and 55923 transitions. [2023-12-02 17:38:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 17:38:04,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:04,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:04,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:38:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:04,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:04,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash 439248047, now seen corresponding path program 1 times [2023-12-02 17:38:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:04,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373482004] [2023-12-02 17:38:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:04,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:04,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547405237] [2023-12-02 17:38:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:04,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:04,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:04,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:38:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:05,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 17:38:05,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:05,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:38:05,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-02 17:38:05,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:05,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-02 17:38:05,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:05,102 INFO L378 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 [2023-12-02 17:38:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:38:05,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:05,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373482004] [2023-12-02 17:38:05,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547405237] [2023-12-02 17:38:05,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547405237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:05,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:05,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301690502] [2023-12-02 17:38:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:05,137 INFO L87 Difference]: Start difference. First operand 19621 states and 55923 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:05,564 INFO L93 Difference]: Finished difference Result 19618 states and 55920 transitions. [2023-12-02 17:38:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-02 17:38:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:05,600 INFO L225 Difference]: With dead ends: 19618 [2023-12-02 17:38:05,600 INFO L226 Difference]: Without dead ends: 19618 [2023-12-02 17:38:05,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:05,601 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 12 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:05,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1148 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:38:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19618 states. [2023-12-02 17:38:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19618 to 19588. [2023-12-02 17:38:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19588 states, 19504 states have (on average 2.865412223133716) internal successors, (55887), 19587 states have internal predecessors, (55887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19588 states to 19588 states and 55887 transitions. [2023-12-02 17:38:05,910 INFO L78 Accepts]: Start accepts. Automaton has 19588 states and 55887 transitions. Word has length 117 [2023-12-02 17:38:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:05,911 INFO L495 AbstractCegarLoop]: Abstraction has 19588 states and 55887 transitions. [2023-12-02 17:38:05,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 19588 states and 55887 transitions. [2023-12-02 17:38:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-02 17:38:05,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:05,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:05,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:38:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:06,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1785525179, now seen corresponding path program 1 times [2023-12-02 17:38:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609639316] [2023-12-02 17:38:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:06,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:06,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:06,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418723530] [2023-12-02 17:38:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:06,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:06,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:06,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:06,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:38:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:06,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:06,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:06,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:06,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609639316] [2023-12-02 17:38:06,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418723530] [2023-12-02 17:38:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418723530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:06,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611925839] [2023-12-02 17:38:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:06,260 INFO L87 Difference]: Start difference. First operand 19588 states and 55887 transitions. Second operand has 3 states, 2 states have (on average 68.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:06,344 INFO L93 Difference]: Finished difference Result 19587 states and 55886 transitions. [2023-12-02 17:38:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 68.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-02 17:38:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:06,385 INFO L225 Difference]: With dead ends: 19587 [2023-12-02 17:38:06,385 INFO L226 Difference]: Without dead ends: 19587 [2023-12-02 17:38:06,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:06,386 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:06,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 921 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19587 states. [2023-12-02 17:38:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19587 to 19587. [2023-12-02 17:38:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19587 states, 19504 states have (on average 2.865360951599672) internal successors, (55886), 19586 states have internal predecessors, (55886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19587 states to 19587 states and 55886 transitions. [2023-12-02 17:38:06,813 INFO L78 Accepts]: Start accepts. Automaton has 19587 states and 55886 transitions. Word has length 136 [2023-12-02 17:38:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:06,813 INFO L495 AbstractCegarLoop]: Abstraction has 19587 states and 55886 transitions. [2023-12-02 17:38:06,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 68.0) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 19587 states and 55886 transitions. [2023-12-02 17:38:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 17:38:06,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:06,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:38:06,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:38:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 17:38:07,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:07,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1327389756, now seen corresponding path program 1 times [2023-12-02 17:38:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569119750] [2023-12-02 17:38:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:07,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:07,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620419733] [2023-12-02 17:38:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:07,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:07,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:07,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:07,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:38:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:07,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:07,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:07,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:07,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569119750] [2023-12-02 17:38:07,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620419733] [2023-12-02 17:38:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620419733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:07,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428076268] [2023-12-02 17:38:07,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:07,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:07,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:07,170 INFO L87 Difference]: Start difference. First operand 19587 states and 55886 transitions. Second operand has 3 states, 2 states have (on average 76.5) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:07,258 INFO L93 Difference]: Finished difference Result 19586 states and 55885 transitions. [2023-12-02 17:38:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:07,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 76.5) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-02 17:38:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:07,297 INFO L225 Difference]: With dead ends: 19586 [2023-12-02 17:38:07,297 INFO L226 Difference]: Without dead ends: 19586 [2023-12-02 17:38:07,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:07,297 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 2 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:07,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 916 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19586 states. [2023-12-02 17:38:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19586 to 19586. [2023-12-02 17:38:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19586 states, 19504 states have (on average 2.8653096800656277) internal successors, (55885), 19585 states have internal predecessors, (55885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19586 states to 19586 states and 55885 transitions. [2023-12-02 17:38:07,642 INFO L78 Accepts]: Start accepts. Automaton has 19586 states and 55885 transitions. Word has length 153 [2023-12-02 17:38:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:07,643 INFO L495 AbstractCegarLoop]: Abstraction has 19586 states and 55885 transitions. [2023-12-02 17:38:07,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 76.5) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 19586 states and 55885 transitions. [2023-12-02 17:38:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 17:38:07,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:07,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:07,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:38:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 17:38:07,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:07,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1080500561, now seen corresponding path program 1 times [2023-12-02 17:38:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:07,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077113247] [2023-12-02 17:38:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:07,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079955475] [2023-12-02 17:38:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:07,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:07,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:07,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:07,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:38:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:07,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:07,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:08,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:08,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077113247] [2023-12-02 17:38:08,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079955475] [2023-12-02 17:38:08,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079955475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:08,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:08,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371856277] [2023-12-02 17:38:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:08,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:08,005 INFO L87 Difference]: Start difference. First operand 19586 states and 55885 transitions. Second operand has 3 states, 2 states have (on average 80.5) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:08,158 INFO L93 Difference]: Finished difference Result 25978 states and 74309 transitions. [2023-12-02 17:38:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:08,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 80.5) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-02 17:38:08,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:08,224 INFO L225 Difference]: With dead ends: 25978 [2023-12-02 17:38:08,224 INFO L226 Difference]: Without dead ends: 25978 [2023-12-02 17:38:08,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:08,225 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 272 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:08,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 967 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:08,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25978 states. [2023-12-02 17:38:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25978 to 19225. [2023-12-02 17:38:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19225 states, 19156 states have (on average 2.8633326372937984) internal successors, (54850), 19224 states have internal predecessors, (54850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19225 states to 19225 states and 54850 transitions. [2023-12-02 17:38:08,707 INFO L78 Accepts]: Start accepts. Automaton has 19225 states and 54850 transitions. Word has length 161 [2023-12-02 17:38:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:08,707 INFO L495 AbstractCegarLoop]: Abstraction has 19225 states and 54850 transitions. [2023-12-02 17:38:08,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 80.5) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 19225 states and 54850 transitions. [2023-12-02 17:38:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 17:38:08,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:08,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:08,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:38:08,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:08,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:08,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2011473520, now seen corresponding path program 1 times [2023-12-02 17:38:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:08,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664451016] [2023-12-02 17:38:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:08,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:08,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315524127] [2023-12-02 17:38:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:08,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:08,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:08,930 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:08,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:38:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:09,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:09,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:09,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:09,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:09,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664451016] [2023-12-02 17:38:09,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:09,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315524127] [2023-12-02 17:38:09,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315524127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:09,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128312204] [2023-12-02 17:38:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:09,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:09,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:09,067 INFO L87 Difference]: Start difference. First operand 19225 states and 54850 transitions. Second operand has 3 states, 2 states have (on average 85.5) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:09,207 INFO L93 Difference]: Finished difference Result 23428 states and 66562 transitions. [2023-12-02 17:38:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 85.5) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-02 17:38:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:09,268 INFO L225 Difference]: With dead ends: 23428 [2023-12-02 17:38:09,268 INFO L226 Difference]: Without dead ends: 23428 [2023-12-02 17:38:09,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:09,269 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 202 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:09,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 995 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23428 states. [2023-12-02 17:38:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23428 to 18698. [2023-12-02 17:38:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18698 states, 18640 states have (on average 2.860461373390558) internal successors, (53319), 18697 states have internal predecessors, (53319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18698 states to 18698 states and 53319 transitions. [2023-12-02 17:38:09,724 INFO L78 Accepts]: Start accepts. Automaton has 18698 states and 53319 transitions. Word has length 171 [2023-12-02 17:38:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:09,725 INFO L495 AbstractCegarLoop]: Abstraction has 18698 states and 53319 transitions. [2023-12-02 17:38:09,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 85.5) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 18698 states and 53319 transitions. [2023-12-02 17:38:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-02 17:38:09,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:09,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:09,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 17:38:09,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 17:38:09,928 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:09,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 290810514, now seen corresponding path program 1 times [2023-12-02 17:38:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216720562] [2023-12-02 17:38:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:09,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:09,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823607325] [2023-12-02 17:38:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:09,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:09,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:09,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:09,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:38:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:10,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:10,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:10,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:10,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216720562] [2023-12-02 17:38:10,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823607325] [2023-12-02 17:38:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823607325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:10,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450353983] [2023-12-02 17:38:10,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:10,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:10,088 INFO L87 Difference]: Start difference. First operand 18698 states and 53319 transitions. Second operand has 3 states, 2 states have (on average 86.5) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:10,205 INFO L93 Difference]: Finished difference Result 21428 states and 60924 transitions. [2023-12-02 17:38:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:10,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 86.5) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-02 17:38:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:10,253 INFO L225 Difference]: With dead ends: 21428 [2023-12-02 17:38:10,253 INFO L226 Difference]: Without dead ends: 21428 [2023-12-02 17:38:10,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:10,254 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 202 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:10,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1023 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21428 states. [2023-12-02 17:38:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21428 to 17833. [2023-12-02 17:38:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17833 states, 17792 states have (on average 2.856002697841727) internal successors, (50814), 17832 states have internal predecessors, (50814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17833 states to 17833 states and 50814 transitions. [2023-12-02 17:38:10,678 INFO L78 Accepts]: Start accepts. Automaton has 17833 states and 50814 transitions. Word has length 173 [2023-12-02 17:38:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:10,678 INFO L495 AbstractCegarLoop]: Abstraction has 17833 states and 50814 transitions. [2023-12-02 17:38:10,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 86.5) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 17833 states and 50814 transitions. [2023-12-02 17:38:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-02 17:38:10,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:10,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:10,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 17:38:10,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:10,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -948663803, now seen corresponding path program 1 times [2023-12-02 17:38:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948846491] [2023-12-02 17:38:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:10,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:10,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316282412] [2023-12-02 17:38:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:10,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:10,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:10,904 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:10,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:38:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:11,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:38:11,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:11,247 INFO L378 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 [2023-12-02 17:38:11,265 INFO L378 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 [2023-12-02 17:38:11,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:11,288 INFO L378 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 [2023-12-02 17:38:11,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:11,320 INFO L378 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 [2023-12-02 17:38:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:11,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:11,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:11,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948846491] [2023-12-02 17:38:11,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316282412] [2023-12-02 17:38:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316282412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:38:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755227161] [2023-12-02 17:38:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:38:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:38:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:11,350 INFO L87 Difference]: Start difference. First operand 17833 states and 50814 transitions. Second operand has 7 states, 6 states have (on average 29.666666666666668) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:11,966 INFO L93 Difference]: Finished difference Result 26775 states and 75495 transitions. [2023-12-02 17:38:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:38:11,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 29.666666666666668) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2023-12-02 17:38:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:12,029 INFO L225 Difference]: With dead ends: 26775 [2023-12-02 17:38:12,029 INFO L226 Difference]: Without dead ends: 26775 [2023-12-02 17:38:12,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:12,030 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 815 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:12,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1258 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:38:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26775 states. [2023-12-02 17:38:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26775 to 24545. [2023-12-02 17:38:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24545 states, 24504 states have (on average 2.9008325171400586) internal successors, (71082), 24544 states have internal predecessors, (71082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24545 states to 24545 states and 71082 transitions. [2023-12-02 17:38:12,596 INFO L78 Accepts]: Start accepts. Automaton has 24545 states and 71082 transitions. Word has length 178 [2023-12-02 17:38:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:12,597 INFO L495 AbstractCegarLoop]: Abstraction has 24545 states and 71082 transitions. [2023-12-02 17:38:12,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 29.666666666666668) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 24545 states and 71082 transitions. [2023-12-02 17:38:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-02 17:38:12,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:12,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:12,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:38:12,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:12,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:12,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:12,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1435648662, now seen corresponding path program 1 times [2023-12-02 17:38:12,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:12,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36518054] [2023-12-02 17:38:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:12,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642075439] [2023-12-02 17:38:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:12,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:12,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:12,823 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:12,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:38:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:12,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:38:12,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:13,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:13,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36518054] [2023-12-02 17:38:13,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642075439] [2023-12-02 17:38:13,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642075439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:13,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:38:13,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458438429] [2023-12-02 17:38:13,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:13,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:38:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:38:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:13,120 INFO L87 Difference]: Start difference. First operand 24545 states and 71082 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:13,525 INFO L93 Difference]: Finished difference Result 31671 states and 90368 transitions. [2023-12-02 17:38:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:38:13,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-02 17:38:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:13,616 INFO L225 Difference]: With dead ends: 31671 [2023-12-02 17:38:13,616 INFO L226 Difference]: Without dead ends: 31671 [2023-12-02 17:38:13,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:38:13,617 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 737 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:13,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 2136 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:38:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2023-12-02 17:38:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 28238. [2023-12-02 17:38:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28238 states, 28197 states have (on average 2.896265560165975) internal successors, (81666), 28237 states have internal predecessors, (81666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28238 states to 28238 states and 81666 transitions. [2023-12-02 17:38:14,294 INFO L78 Accepts]: Start accepts. Automaton has 28238 states and 81666 transitions. Word has length 179 [2023-12-02 17:38:14,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:14,295 INFO L495 AbstractCegarLoop]: Abstraction has 28238 states and 81666 transitions. [2023-12-02 17:38:14,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 28238 states and 81666 transitions. [2023-12-02 17:38:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-02 17:38:14,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:14,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:38:14,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 17:38:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:14,500 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:14,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1295783549, now seen corresponding path program 1 times [2023-12-02 17:38:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566561776] [2023-12-02 17:38:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:14,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:14,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:14,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965161] [2023-12-02 17:38:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:14,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:14,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:14,521 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:14,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:38:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:14,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:38:14,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:14,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:14,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566561776] [2023-12-02 17:38:14,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965161] [2023-12-02 17:38:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:14,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:14,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714088925] [2023-12-02 17:38:14,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:14,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:38:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:14,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:38:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:14,739 INFO L87 Difference]: Start difference. First operand 28238 states and 81666 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:14,997 INFO L93 Difference]: Finished difference Result 33239 states and 95082 transitions. [2023-12-02 17:38:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:14,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-02 17:38:14,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:15,077 INFO L225 Difference]: With dead ends: 33239 [2023-12-02 17:38:15,077 INFO L226 Difference]: Without dead ends: 33239 [2023-12-02 17:38:15,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:15,078 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 284 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:15,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1823 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:38:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33239 states. [2023-12-02 17:38:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33239 to 31012. [2023-12-02 17:38:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31012 states, 30971 states have (on average 2.8896386942623744) internal successors, (89495), 31011 states have internal predecessors, (89495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31012 states to 31012 states and 89495 transitions. [2023-12-02 17:38:15,789 INFO L78 Accepts]: Start accepts. Automaton has 31012 states and 89495 transitions. Word has length 187 [2023-12-02 17:38:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:15,789 INFO L495 AbstractCegarLoop]: Abstraction has 31012 states and 89495 transitions. [2023-12-02 17:38:15,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 31012 states and 89495 transitions. [2023-12-02 17:38:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-02 17:38:15,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:15,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:15,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:38:15,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 17:38:15,995 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:15,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash 821925376, now seen corresponding path program 1 times [2023-12-02 17:38:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32550119] [2023-12-02 17:38:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:16,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772909056] [2023-12-02 17:38:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:16,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:16,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:16,020 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:16,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:38:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:16,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 17:38:16,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:16,340 INFO L378 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 [2023-12-02 17:38:16,355 INFO L378 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 [2023-12-02 17:38:16,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:16,380 INFO L378 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 [2023-12-02 17:38:16,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:16,410 INFO L378 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 [2023-12-02 17:38:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:16,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:16,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32550119] [2023-12-02 17:38:16,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772909056] [2023-12-02 17:38:16,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772909056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:16,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:38:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236041653] [2023-12-02 17:38:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:16,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:38:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:16,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:38:16,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:16,439 INFO L87 Difference]: Start difference. First operand 31012 states and 89495 transitions. Second operand has 7 states, 6 states have (on average 32.333333333333336) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:17,082 INFO L93 Difference]: Finished difference Result 31342 states and 90022 transitions. [2023-12-02 17:38:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:38:17,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 32.333333333333336) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2023-12-02 17:38:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:17,165 INFO L225 Difference]: With dead ends: 31342 [2023-12-02 17:38:17,165 INFO L226 Difference]: Without dead ends: 31342 [2023-12-02 17:38:17,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:17,166 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 600 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:17,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1472 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:38:17,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31342 states. [2023-12-02 17:38:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31342 to 31201. [2023-12-02 17:38:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31201 states, 31160 states have (on average 2.884370988446727) internal successors, (89877), 31200 states have internal predecessors, (89877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31201 states to 31201 states and 89877 transitions. [2023-12-02 17:38:17,676 INFO L78 Accepts]: Start accepts. Automaton has 31201 states and 89877 transitions. Word has length 194 [2023-12-02 17:38:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:17,677 INFO L495 AbstractCegarLoop]: Abstraction has 31201 states and 89877 transitions. [2023-12-02 17:38:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 32.333333333333336) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 31201 states and 89877 transitions. [2023-12-02 17:38:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-02 17:38:17,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:17,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:17,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:17,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:38:17,881 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:17,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:17,881 INFO L85 PathProgramCache]: Analyzing trace with hash -664766279, now seen corresponding path program 1 times [2023-12-02 17:38:17,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253647157] [2023-12-02 17:38:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:17,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:17,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899112127] [2023-12-02 17:38:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:17,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:17,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:17,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:17,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:38:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:18,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:38:18,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:18,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:18,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253647157] [2023-12-02 17:38:18,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899112127] [2023-12-02 17:38:18,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899112127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:18,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:18,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014593752] [2023-12-02 17:38:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:38:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:38:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:18,152 INFO L87 Difference]: Start difference. First operand 31201 states and 89877 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:18,342 INFO L93 Difference]: Finished difference Result 36291 states and 103374 transitions. [2023-12-02 17:38:18,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:18,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-02 17:38:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:18,421 INFO L225 Difference]: With dead ends: 36291 [2023-12-02 17:38:18,421 INFO L226 Difference]: Without dead ends: 36291 [2023-12-02 17:38:18,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:18,421 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 232 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:18,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1736 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:38:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36291 states. [2023-12-02 17:38:18,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36291 to 31416. [2023-12-02 17:38:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31416 states, 31375 states have (on average 2.8716175298804782) internal successors, (90097), 31415 states have internal predecessors, (90097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31416 states to 31416 states and 90097 transitions. [2023-12-02 17:38:18,975 INFO L78 Accepts]: Start accepts. Automaton has 31416 states and 90097 transitions. Word has length 196 [2023-12-02 17:38:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:18,976 INFO L495 AbstractCegarLoop]: Abstraction has 31416 states and 90097 transitions. [2023-12-02 17:38:18,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 31416 states and 90097 transitions. [2023-12-02 17:38:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-02 17:38:18,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:18,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:18,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:19,179 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:19,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1108738825, now seen corresponding path program 1 times [2023-12-02 17:38:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:19,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833898673] [2023-12-02 17:38:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:19,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144626562] [2023-12-02 17:38:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:19,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:19,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:19,196 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:19,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:38:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:19,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 17:38:19,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:19,619 INFO L378 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 [2023-12-02 17:38:19,639 INFO L378 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 [2023-12-02 17:38:19,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:19,668 INFO L378 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 [2023-12-02 17:38:19,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:19,705 INFO L378 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 [2023-12-02 17:38:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:19,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:19,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:19,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833898673] [2023-12-02 17:38:19,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:19,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144626562] [2023-12-02 17:38:19,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144626562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:19,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:19,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 17:38:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513468150] [2023-12-02 17:38:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:19,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 17:38:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 17:38:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:38:19,740 INFO L87 Difference]: Start difference. First operand 31416 states and 90097 transitions. Second operand has 13 states, 12 states have (on average 16.75) internal successors, (201), 13 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:20,217 INFO L93 Difference]: Finished difference Result 31526 states and 90209 transitions. [2023-12-02 17:38:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:38:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 16.75) internal successors, (201), 13 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2023-12-02 17:38:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:20,284 INFO L225 Difference]: With dead ends: 31526 [2023-12-02 17:38:20,284 INFO L226 Difference]: Without dead ends: 31526 [2023-12-02 17:38:20,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-12-02 17:38:20,285 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 803 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:20,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 2581 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:38:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31526 states. [2023-12-02 17:38:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31526 to 31518. [2023-12-02 17:38:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31518 states, 31477 states have (on average 2.865616164183372) internal successors, (90201), 31517 states have internal predecessors, (90201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31518 states to 31518 states and 90201 transitions. [2023-12-02 17:38:20,812 INFO L78 Accepts]: Start accepts. Automaton has 31518 states and 90201 transitions. Word has length 201 [2023-12-02 17:38:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:20,813 INFO L495 AbstractCegarLoop]: Abstraction has 31518 states and 90201 transitions. [2023-12-02 17:38:20,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 16.75) internal successors, (201), 13 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 31518 states and 90201 transitions. [2023-12-02 17:38:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-02 17:38:20,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:20,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:20,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 17:38:21,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:21,018 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:21,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1736811277, now seen corresponding path program 1 times [2023-12-02 17:38:21,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:21,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167962577] [2023-12-02 17:38:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:21,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:21,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419185508] [2023-12-02 17:38:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:21,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:21,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:21,041 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:21,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 17:38:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:21,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:38:21,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:21,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:38:21,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-02 17:38:21,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:21,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-02 17:38:21,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:21,279 INFO L378 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 [2023-12-02 17:38:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:38:21,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:21,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167962577] [2023-12-02 17:38:21,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419185508] [2023-12-02 17:38:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419185508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589075725] [2023-12-02 17:38:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:21,305 INFO L87 Difference]: Start difference. First operand 31518 states and 90201 transitions. Second operand has 6 states, 5 states have (on average 41.8) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:21,927 INFO L93 Difference]: Finished difference Result 36210 states and 104051 transitions. [2023-12-02 17:38:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 41.8) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2023-12-02 17:38:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:22,017 INFO L225 Difference]: With dead ends: 36210 [2023-12-02 17:38:22,017 INFO L226 Difference]: Without dead ends: 36210 [2023-12-02 17:38:22,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:22,018 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 207 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:22,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1926 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:38:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36210 states. [2023-12-02 17:38:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36210 to 34152. [2023-12-02 17:38:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34152 states, 34111 states have (on average 2.8724458385857936) internal successors, (97982), 34151 states have internal predecessors, (97982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34152 states to 34152 states and 97982 transitions. [2023-12-02 17:38:22,602 INFO L78 Accepts]: Start accepts. Automaton has 34152 states and 97982 transitions. Word has length 209 [2023-12-02 17:38:22,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:22,603 INFO L495 AbstractCegarLoop]: Abstraction has 34152 states and 97982 transitions. [2023-12-02 17:38:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 41.8) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 34152 states and 97982 transitions. [2023-12-02 17:38:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-02 17:38:22,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:22,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:22,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 17:38:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:22,807 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:22,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1757164615, now seen corresponding path program 1 times [2023-12-02 17:38:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959809376] [2023-12-02 17:38:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:22,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:22,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608879249] [2023-12-02 17:38:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:22,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:22,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:22,826 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:22,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 17:38:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:22,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:22,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:22,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:22,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959809376] [2023-12-02 17:38:22,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608879249] [2023-12-02 17:38:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608879249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:22,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855599789] [2023-12-02 17:38:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:22,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:22,982 INFO L87 Difference]: Start difference. First operand 34152 states and 97982 transitions. Second operand has 3 states, 2 states have (on average 105.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:23,124 INFO L93 Difference]: Finished difference Result 34151 states and 97981 transitions. [2023-12-02 17:38:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:23,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 105.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2023-12-02 17:38:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:23,200 INFO L225 Difference]: With dead ends: 34151 [2023-12-02 17:38:23,200 INFO L226 Difference]: Without dead ends: 34151 [2023-12-02 17:38:23,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:23,201 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:23,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 897 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34151 states. [2023-12-02 17:38:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34151 to 34151. [2023-12-02 17:38:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34151 states, 34111 states have (on average 2.8724165225293894) internal successors, (97981), 34150 states have internal predecessors, (97981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34151 states to 34151 states and 97981 transitions. [2023-12-02 17:38:23,772 INFO L78 Accepts]: Start accepts. Automaton has 34151 states and 97981 transitions. Word has length 210 [2023-12-02 17:38:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:23,772 INFO L495 AbstractCegarLoop]: Abstraction has 34151 states and 97981 transitions. [2023-12-02 17:38:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 105.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:23,772 INFO L276 IsEmpty]: Start isEmpty. Operand 34151 states and 97981 transitions. [2023-12-02 17:38:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-02 17:38:23,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:23,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:23,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 17:38:23,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:23,976 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:23,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash -59613956, now seen corresponding path program 1 times [2023-12-02 17:38:23,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:23,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992510754] [2023-12-02 17:38:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:23,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:23,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:23,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363447159] [2023-12-02 17:38:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:23,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:23,997 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:23,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:38:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:24,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:38:24,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:24,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:38:24,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-02 17:38:24,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:24,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-02 17:38:24,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:24,229 INFO L378 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 [2023-12-02 17:38:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:38:24,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:24,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992510754] [2023-12-02 17:38:24,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363447159] [2023-12-02 17:38:24,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363447159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:24,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59785273] [2023-12-02 17:38:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:24,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:24,255 INFO L87 Difference]: Start difference. First operand 34151 states and 97981 transitions. Second operand has 6 states, 5 states have (on average 43.2) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:24,786 INFO L93 Difference]: Finished difference Result 37730 states and 108462 transitions. [2023-12-02 17:38:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 43.2) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2023-12-02 17:38:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:24,865 INFO L225 Difference]: With dead ends: 37730 [2023-12-02 17:38:24,865 INFO L226 Difference]: Without dead ends: 37730 [2023-12-02 17:38:24,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:24,866 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 206 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:24,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1603 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:38:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37730 states. [2023-12-02 17:38:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37730 to 36232. [2023-12-02 17:38:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36232 states, 36192 states have (on average 2.875) internal successors, (104052), 36231 states have internal predecessors, (104052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36232 states to 36232 states and 104052 transitions. [2023-12-02 17:38:25,698 INFO L78 Accepts]: Start accepts. Automaton has 36232 states and 104052 transitions. Word has length 216 [2023-12-02 17:38:25,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:25,698 INFO L495 AbstractCegarLoop]: Abstraction has 36232 states and 104052 transitions. [2023-12-02 17:38:25,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 43.2) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:25,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36232 states and 104052 transitions. [2023-12-02 17:38:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-02 17:38:25,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:25,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:38:25,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 17:38:25,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 17:38:25,904 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:25,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1764542220, now seen corresponding path program 1 times [2023-12-02 17:38:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145980165] [2023-12-02 17:38:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:25,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175479869] [2023-12-02 17:38:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:25,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:25,928 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:25,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:38:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:26,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:26,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:26,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:26,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:26,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145980165] [2023-12-02 17:38:26,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:26,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175479869] [2023-12-02 17:38:26,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175479869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:26,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:26,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:26,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947247971] [2023-12-02 17:38:26,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:26,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:26,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:26,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:26,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:26,139 INFO L87 Difference]: Start difference. First operand 36232 states and 104052 transitions. Second operand has 3 states, 2 states have (on average 109.0) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:26,340 INFO L93 Difference]: Finished difference Result 36231 states and 104051 transitions. [2023-12-02 17:38:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 109.0) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2023-12-02 17:38:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:26,435 INFO L225 Difference]: With dead ends: 36231 [2023-12-02 17:38:26,435 INFO L226 Difference]: Without dead ends: 36231 [2023-12-02 17:38:26,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:26,436 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 2 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:26,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 895 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36231 states. [2023-12-02 17:38:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36231 to 36231. [2023-12-02 17:38:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36231 states, 36192 states have (on average 2.8749723695844387) internal successors, (104051), 36230 states have internal predecessors, (104051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36231 states to 36231 states and 104051 transitions. [2023-12-02 17:38:27,248 INFO L78 Accepts]: Start accepts. Automaton has 36231 states and 104051 transitions. Word has length 218 [2023-12-02 17:38:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:27,248 INFO L495 AbstractCegarLoop]: Abstraction has 36231 states and 104051 transitions. [2023-12-02 17:38:27,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 109.0) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 36231 states and 104051 transitions. [2023-12-02 17:38:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-02 17:38:27,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:27,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:27,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 17:38:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:27,455 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:27,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 427331414, now seen corresponding path program 1 times [2023-12-02 17:38:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496394406] [2023-12-02 17:38:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:27,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:27,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485755800] [2023-12-02 17:38:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:27,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:27,476 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:27,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 17:38:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:27,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:27,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:27,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:27,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496394406] [2023-12-02 17:38:27,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485755800] [2023-12-02 17:38:27,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485755800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:27,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:27,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:27,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636950520] [2023-12-02 17:38:27,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:27,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:27,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:27,652 INFO L87 Difference]: Start difference. First operand 36231 states and 104051 transitions. Second operand has 3 states, 2 states have (on average 111.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:27,844 INFO L93 Difference]: Finished difference Result 36227 states and 104047 transitions. [2023-12-02 17:38:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 111.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-12-02 17:38:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:27,933 INFO L225 Difference]: With dead ends: 36227 [2023-12-02 17:38:27,934 INFO L226 Difference]: Without dead ends: 36227 [2023-12-02 17:38:27,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:27,934 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 67 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:27,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 829 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36227 states. [2023-12-02 17:38:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36227 to 36227. [2023-12-02 17:38:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36227 states, 36192 states have (on average 2.8748618479221926) internal successors, (104047), 36226 states have internal predecessors, (104047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36227 states to 36227 states and 104047 transitions. [2023-12-02 17:38:28,741 INFO L78 Accepts]: Start accepts. Automaton has 36227 states and 104047 transitions. Word has length 222 [2023-12-02 17:38:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:28,742 INFO L495 AbstractCegarLoop]: Abstraction has 36227 states and 104047 transitions. [2023-12-02 17:38:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 111.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36227 states and 104047 transitions. [2023-12-02 17:38:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-02 17:38:28,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:28,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:28,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:28,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 17:38:28,950 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:28,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 314141749, now seen corresponding path program 1 times [2023-12-02 17:38:28,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:28,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076303193] [2023-12-02 17:38:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:28,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560187707] [2023-12-02 17:38:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:28,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:28,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:28,977 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:28,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 17:38:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:29,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 17:38:29,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:29,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 17:38:29,188 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 17:38:29,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 17:38:29,296 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 17:38:29,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 17:38:29,489 INFO L378 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 [2023-12-02 17:38:29,508 INFO L378 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 [2023-12-02 17:38:29,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:29,540 INFO L378 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 [2023-12-02 17:38:29,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:29,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2023-12-02 17:38:29,636 INFO L378 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 56 treesize of output 45 [2023-12-02 17:38:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:38:29,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:29,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:29,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076303193] [2023-12-02 17:38:29,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:29,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560187707] [2023-12-02 17:38:29,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560187707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:29,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:29,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 17:38:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974817033] [2023-12-02 17:38:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 17:38:29,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 17:38:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:38:29,674 INFO L87 Difference]: Start difference. First operand 36227 states and 104047 transitions. Second operand has 13 states, 12 states have (on average 18.833333333333332) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:31,186 INFO L93 Difference]: Finished difference Result 39440 states and 113466 transitions. [2023-12-02 17:38:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 17:38:31,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 18.833333333333332) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2023-12-02 17:38:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:31,288 INFO L225 Difference]: With dead ends: 39440 [2023-12-02 17:38:31,288 INFO L226 Difference]: Without dead ends: 39440 [2023-12-02 17:38:31,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-12-02 17:38:31,289 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1135 mSDsluCounter, 3539 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:31,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 4101 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:38:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39440 states. [2023-12-02 17:38:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39440 to 36780. [2023-12-02 17:38:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36780 states, 36745 states have (on average 2.8781330793305213) internal successors, (105757), 36779 states have internal predecessors, (105757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36780 states to 36780 states and 105757 transitions. [2023-12-02 17:38:31,985 INFO L78 Accepts]: Start accepts. Automaton has 36780 states and 105757 transitions. Word has length 226 [2023-12-02 17:38:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:31,985 INFO L495 AbstractCegarLoop]: Abstraction has 36780 states and 105757 transitions. [2023-12-02 17:38:31,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 18.833333333333332) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 36780 states and 105757 transitions. [2023-12-02 17:38:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-02 17:38:31,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:31,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:31,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:32,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 17:38:32,192 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:32,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash -515535848, now seen corresponding path program 1 times [2023-12-02 17:38:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894170904] [2023-12-02 17:38:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:32,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050357606] [2023-12-02 17:38:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:32,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:32,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:32,215 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:32,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:38:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:32,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 17:38:32,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:32,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 17:38:32,425 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 17:38:32,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 17:38:32,620 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 17:38:32,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 17:38:33,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 17:38:33,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-02 17:38:33,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:38:33,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:38:33,144 INFO L378 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 37 treesize of output 26 [2023-12-02 17:38:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:38:33,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:33,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894170904] [2023-12-02 17:38:33,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050357606] [2023-12-02 17:38:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050357606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:33,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:33,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 17:38:33,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213018725] [2023-12-02 17:38:33,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:33,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 17:38:33,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 17:38:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:38:33,173 INFO L87 Difference]: Start difference. First operand 36780 states and 105757 transitions. Second operand has 13 states, 12 states have (on average 18.833333333333332) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:34,497 INFO L93 Difference]: Finished difference Result 45853 states and 130347 transitions. [2023-12-02 17:38:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 17:38:34,497 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 18.833333333333332) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2023-12-02 17:38:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:34,593 INFO L225 Difference]: With dead ends: 45853 [2023-12-02 17:38:34,594 INFO L226 Difference]: Without dead ends: 45853 [2023-12-02 17:38:34,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-12-02 17:38:34,594 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1719 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:34,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 3570 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 17:38:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45853 states. [2023-12-02 17:38:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45853 to 35765. [2023-12-02 17:38:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35765 states, 35730 states have (on average 2.874671144696334) internal successors, (102712), 35764 states have internal predecessors, (102712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35765 states to 35765 states and 102712 transitions. [2023-12-02 17:38:35,274 INFO L78 Accepts]: Start accepts. Automaton has 35765 states and 102712 transitions. Word has length 226 [2023-12-02 17:38:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:35,275 INFO L495 AbstractCegarLoop]: Abstraction has 35765 states and 102712 transitions. [2023-12-02 17:38:35,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 18.833333333333332) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 35765 states and 102712 transitions. [2023-12-02 17:38:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-02 17:38:35,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:35,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:35,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:38:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 17:38:35,481 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:35,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1541849317, now seen corresponding path program 1 times [2023-12-02 17:38:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903845674] [2023-12-02 17:38:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:35,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687044843] [2023-12-02 17:38:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:35,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:35,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:35,498 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:35,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 17:38:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:35,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:35,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:35,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:35,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:35,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903845674] [2023-12-02 17:38:35,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:35,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687044843] [2023-12-02 17:38:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687044843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:35,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:38:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573346194] [2023-12-02 17:38:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:35,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:38:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:38:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:38:35,661 INFO L87 Difference]: Start difference. First operand 35765 states and 102712 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:35,798 INFO L93 Difference]: Finished difference Result 35798 states and 102747 transitions. [2023-12-02 17:38:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:38:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2023-12-02 17:38:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:35,871 INFO L225 Difference]: With dead ends: 35798 [2023-12-02 17:38:35,871 INFO L226 Difference]: Without dead ends: 35798 [2023-12-02 17:38:35,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:35,872 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 50 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:35,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1341 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35798 states. [2023-12-02 17:38:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35798 to 35767. [2023-12-02 17:38:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35767 states, 35732 states have (on average 2.874566215157282) internal successors, (102714), 35766 states have internal predecessors, (102714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35767 states to 35767 states and 102714 transitions. [2023-12-02 17:38:36,475 INFO L78 Accepts]: Start accepts. Automaton has 35767 states and 102714 transitions. Word has length 228 [2023-12-02 17:38:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:36,475 INFO L495 AbstractCegarLoop]: Abstraction has 35767 states and 102714 transitions. [2023-12-02 17:38:36,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 35767 states and 102714 transitions. [2023-12-02 17:38:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-02 17:38:36,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:36,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:36,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-02 17:38:36,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 17:38:36,682 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:36,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash 38848209, now seen corresponding path program 1 times [2023-12-02 17:38:36,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:36,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777120171] [2023-12-02 17:38:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:36,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:36,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:36,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916712616] [2023-12-02 17:38:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:36,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:36,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:36,699 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:36,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 17:38:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:36,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:36,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:36,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:36,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777120171] [2023-12-02 17:38:36,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916712616] [2023-12-02 17:38:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916712616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:38:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118476663] [2023-12-02 17:38:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:38:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:38:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:38:36,873 INFO L87 Difference]: Start difference. First operand 35767 states and 102714 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:37,026 INFO L93 Difference]: Finished difference Result 35786 states and 102733 transitions. [2023-12-02 17:38:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:38:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-12-02 17:38:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:37,124 INFO L225 Difference]: With dead ends: 35786 [2023-12-02 17:38:37,124 INFO L226 Difference]: Without dead ends: 35786 [2023-12-02 17:38:37,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:37,125 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 26 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:37,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1341 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35786 states. [2023-12-02 17:38:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35786 to 35769. [2023-12-02 17:38:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35769 states, 35734 states have (on average 2.874461297363855) internal successors, (102716), 35768 states have internal predecessors, (102716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35769 states to 35769 states and 102716 transitions. [2023-12-02 17:38:37,844 INFO L78 Accepts]: Start accepts. Automaton has 35769 states and 102716 transitions. Word has length 230 [2023-12-02 17:38:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:37,844 INFO L495 AbstractCegarLoop]: Abstraction has 35769 states and 102716 transitions. [2023-12-02 17:38:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 35769 states and 102716 transitions. [2023-12-02 17:38:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-02 17:38:37,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:37,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:37,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 17:38:38,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 17:38:38,052 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:38,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash -209052032, now seen corresponding path program 1 times [2023-12-02 17:38:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079844226] [2023-12-02 17:38:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:38,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:38,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322063281] [2023-12-02 17:38:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:38,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:38,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:38,069 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:38,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 17:38:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:38,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:38:38,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:38,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:38,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079844226] [2023-12-02 17:38:38,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322063281] [2023-12-02 17:38:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322063281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:38:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798553962] [2023-12-02 17:38:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:38,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:38:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:38:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:38,243 INFO L87 Difference]: Start difference. First operand 35769 states and 102716 transitions. Second operand has 3 states, 2 states have (on average 116.5) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:38,371 INFO L93 Difference]: Finished difference Result 35781 states and 102728 transitions. [2023-12-02 17:38:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:38:38,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 116.5) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2023-12-02 17:38:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:38,445 INFO L225 Difference]: With dead ends: 35781 [2023-12-02 17:38:38,445 INFO L226 Difference]: Without dead ends: 35781 [2023-12-02 17:38:38,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:38:38,446 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 50 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:38,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 873 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:38:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35781 states. [2023-12-02 17:38:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35781 to 35765. [2023-12-02 17:38:39,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35765 states, 35734 states have (on average 2.8743493591537472) internal successors, (102712), 35764 states have internal predecessors, (102712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35765 states to 35765 states and 102712 transitions. [2023-12-02 17:38:39,149 INFO L78 Accepts]: Start accepts. Automaton has 35765 states and 102712 transitions. Word has length 233 [2023-12-02 17:38:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:39,150 INFO L495 AbstractCegarLoop]: Abstraction has 35765 states and 102712 transitions. [2023-12-02 17:38:39,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 116.5) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 35765 states and 102712 transitions. [2023-12-02 17:38:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-02 17:38:39,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:39,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:39,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 17:38:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:39,358 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:39,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 100940591, now seen corresponding path program 1 times [2023-12-02 17:38:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422913934] [2023-12-02 17:38:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:39,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97699204] [2023-12-02 17:38:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:39,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:39,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:39,375 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:39,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 17:38:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:39,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:38:39,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:39,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:39,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422913934] [2023-12-02 17:38:39,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97699204] [2023-12-02 17:38:39,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97699204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:39,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:39,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:38:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137184160] [2023-12-02 17:38:39,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:39,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:38:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:38:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:39,627 INFO L87 Difference]: Start difference. First operand 35765 states and 102712 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:40,114 INFO L93 Difference]: Finished difference Result 41950 states and 119667 transitions. [2023-12-02 17:38:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:38:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-02 17:38:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:40,200 INFO L225 Difference]: With dead ends: 41950 [2023-12-02 17:38:40,200 INFO L226 Difference]: Without dead ends: 41950 [2023-12-02 17:38:40,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:38:40,200 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 345 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:40,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 3349 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:38:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41950 states. [2023-12-02 17:38:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41950 to 40453. [2023-12-02 17:38:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40453 states, 40422 states have (on average 2.870169709564099) internal successors, (116018), 40452 states have internal predecessors, (116018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 116018 transitions. [2023-12-02 17:38:41,068 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 116018 transitions. Word has length 237 [2023-12-02 17:38:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:41,068 INFO L495 AbstractCegarLoop]: Abstraction has 40453 states and 116018 transitions. [2023-12-02 17:38:41,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 116018 transitions. [2023-12-02 17:38:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-02 17:38:41,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:41,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:38:41,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 17:38:41,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 17:38:41,277 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:41,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1958524787, now seen corresponding path program 1 times [2023-12-02 17:38:41,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:41,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585256381] [2023-12-02 17:38:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:41,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:41,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562708040] [2023-12-02 17:38:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:41,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:41,295 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:41,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 17:38:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:41,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:38:41,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:41,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:38:41,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-02 17:38:41,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:41,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-02 17:38:41,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:41,531 INFO L378 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 [2023-12-02 17:38:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 17:38:41,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:41,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585256381] [2023-12-02 17:38:41,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562708040] [2023-12-02 17:38:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562708040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:41,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57013796] [2023-12-02 17:38:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:41,552 INFO L87 Difference]: Start difference. First operand 40453 states and 116018 transitions. Second operand has 6 states, 5 states have (on average 42.2) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:41,818 INFO L93 Difference]: Finished difference Result 40452 states and 116014 transitions. [2023-12-02 17:38:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 42.2) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 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 246 [2023-12-02 17:38:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:41,900 INFO L225 Difference]: With dead ends: 40452 [2023-12-02 17:38:41,900 INFO L226 Difference]: Without dead ends: 40452 [2023-12-02 17:38:41,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:41,901 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 4 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:41,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1152 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:38:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40452 states. [2023-12-02 17:38:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40452 to 40324. [2023-12-02 17:38:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40324 states, 40294 states have (on average 2.87591204645853) internal successors, (115882), 40323 states have internal predecessors, (115882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40324 states to 40324 states and 115882 transitions. [2023-12-02 17:38:42,684 INFO L78 Accepts]: Start accepts. Automaton has 40324 states and 115882 transitions. Word has length 246 [2023-12-02 17:38:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:42,685 INFO L495 AbstractCegarLoop]: Abstraction has 40324 states and 115882 transitions. [2023-12-02 17:38:42,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 42.2) internal successors, (211), 6 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 40324 states and 115882 transitions. [2023-12-02 17:38:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-02 17:38:42,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:42,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:38:42,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 17:38:42,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 17:38:42,895 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:42,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1577171527, now seen corresponding path program 1 times [2023-12-02 17:38:42,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:42,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712654232] [2023-12-02 17:38:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:42,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:42,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:42,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15510311] [2023-12-02 17:38:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:42,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:42,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:42,917 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:42,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 17:38:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:43,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:38:43,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:43,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:43,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712654232] [2023-12-02 17:38:43,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15510311] [2023-12-02 17:38:43,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15510311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:43,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:43,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:43,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096009663] [2023-12-02 17:38:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:43,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:38:43,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:38:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:38:43,128 INFO L87 Difference]: Start difference. First operand 40324 states and 115882 transitions. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:43,496 INFO L93 Difference]: Finished difference Result 40328 states and 115885 transitions. [2023-12-02 17:38:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:38:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2023-12-02 17:38:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:43,572 INFO L225 Difference]: With dead ends: 40328 [2023-12-02 17:38:43,573 INFO L226 Difference]: Without dead ends: 40320 [2023-12-02 17:38:43,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:38:43,573 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 4 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:43,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1705 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:38:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40320 states. [2023-12-02 17:38:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40320 to 40320. [2023-12-02 17:38:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40320 states, 40290 states have (on average 2.87602382725242) internal successors, (115875), 40319 states have internal predecessors, (115875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40320 states to 40320 states and 115875 transitions. [2023-12-02 17:38:44,315 INFO L78 Accepts]: Start accepts. Automaton has 40320 states and 115875 transitions. Word has length 251 [2023-12-02 17:38:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:44,315 INFO L495 AbstractCegarLoop]: Abstraction has 40320 states and 115875 transitions. [2023-12-02 17:38:44,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 40320 states and 115875 transitions. [2023-12-02 17:38:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-02 17:38:44,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:44,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:44,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 17:38:44,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:44,526 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:44,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1214795545, now seen corresponding path program 1 times [2023-12-02 17:38:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460163613] [2023-12-02 17:38:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:44,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588044559] [2023-12-02 17:38:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:44,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:44,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:44,547 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:44,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 17:38:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:44,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 17:38:44,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:45,046 INFO L378 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 [2023-12-02 17:38:45,066 INFO L378 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 [2023-12-02 17:38:45,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:45,095 INFO L378 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 [2023-12-02 17:38:45,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:45,129 INFO L378 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 [2023-12-02 17:38:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:45,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:38:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:38:45,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460163613] [2023-12-02 17:38:45,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588044559] [2023-12-02 17:38:45,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588044559] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:38:45,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:38:45,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-12-02 17:38:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319531847] [2023-12-02 17:38:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:45,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:38:45,261 INFO L87 Difference]: Start difference. First operand 40320 states and 115875 transitions. Second operand has 6 states, 5 states have (on average 50.0) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:46,078 INFO L93 Difference]: Finished difference Result 48089 states and 138498 transitions. [2023-12-02 17:38:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:46,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 50.0) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 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 252 [2023-12-02 17:38:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:46,178 INFO L225 Difference]: With dead ends: 48089 [2023-12-02 17:38:46,178 INFO L226 Difference]: Without dead ends: 48089 [2023-12-02 17:38:46,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:38:46,179 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 150 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:46,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1728 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 17:38:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48089 states. [2023-12-02 17:38:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48089 to 41845. [2023-12-02 17:38:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41845 states, 41818 states have (on average 2.8771342484097757) internal successors, (120316), 41844 states have internal predecessors, (120316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41845 states to 41845 states and 120316 transitions. [2023-12-02 17:38:46,999 INFO L78 Accepts]: Start accepts. Automaton has 41845 states and 120316 transitions. Word has length 252 [2023-12-02 17:38:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:47,000 INFO L495 AbstractCegarLoop]: Abstraction has 41845 states and 120316 transitions. [2023-12-02 17:38:47,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 50.0) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 41845 states and 120316 transitions. [2023-12-02 17:38:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-02 17:38:47,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:47,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:47,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 17:38:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:47,211 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:47,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2017577551, now seen corresponding path program 1 times [2023-12-02 17:38:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949793852] [2023-12-02 17:38:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:47,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606989624] [2023-12-02 17:38:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:47,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:47,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:47,230 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:47,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 17:38:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:47,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:38:47,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:47,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-02 17:38:47,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2023-12-02 17:38:47,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:47,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2023-12-02 17:38:47,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:47,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 77 [2023-12-02 17:38:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:38:47,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:47,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949793852] [2023-12-02 17:38:47,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606989624] [2023-12-02 17:38:47,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606989624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:47,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:47,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:47,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580853974] [2023-12-02 17:38:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:47,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:47,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:47,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:47,688 INFO L87 Difference]: Start difference. First operand 41845 states and 120316 transitions. Second operand has 6 states, 5 states have (on average 52.0) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:48,241 INFO L93 Difference]: Finished difference Result 44780 states and 128864 transitions. [2023-12-02 17:38:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 52.0) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 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 262 [2023-12-02 17:38:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:48,343 INFO L225 Difference]: With dead ends: 44780 [2023-12-02 17:38:48,343 INFO L226 Difference]: Without dead ends: 44780 [2023-12-02 17:38:48,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:48,344 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 149 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:48,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 979 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:38:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44780 states. [2023-12-02 17:38:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44780 to 43370. [2023-12-02 17:38:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43370 states, 43346 states have (on average 2.878166382134453) internal successors, (124757), 43369 states have internal predecessors, (124757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43370 states to 43370 states and 124757 transitions. [2023-12-02 17:38:49,292 INFO L78 Accepts]: Start accepts. Automaton has 43370 states and 124757 transitions. Word has length 262 [2023-12-02 17:38:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:49,292 INFO L495 AbstractCegarLoop]: Abstraction has 43370 states and 124757 transitions. [2023-12-02 17:38:49,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 52.0) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43370 states and 124757 transitions. [2023-12-02 17:38:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-02 17:38:49,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:49,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:49,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 17:38:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 17:38:49,502 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:49,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2096743014, now seen corresponding path program 1 times [2023-12-02 17:38:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207442207] [2023-12-02 17:38:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:49,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:49,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642431390] [2023-12-02 17:38:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:49,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:49,520 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:49,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 17:38:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:49,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:38:49,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:38:49,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:49,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207442207] [2023-12-02 17:38:49,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642431390] [2023-12-02 17:38:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642431390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 17:38:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289193950] [2023-12-02 17:38:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:38:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:38:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:38:49,857 INFO L87 Difference]: Start difference. First operand 43370 states and 124757 transitions. Second operand has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:50,135 INFO L93 Difference]: Finished difference Result 44870 states and 128409 transitions. [2023-12-02 17:38:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:38:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-12-02 17:38:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:50,225 INFO L225 Difference]: With dead ends: 44870 [2023-12-02 17:38:50,225 INFO L226 Difference]: Without dead ends: 41413 [2023-12-02 17:38:50,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:38:50,226 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 112 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:50,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2604 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:38:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41413 states. [2023-12-02 17:38:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41413 to 41269. [2023-12-02 17:38:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 41245 states have (on average 2.8932476663838043) internal successors, (119332), 41268 states have internal predecessors, (119332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 119332 transitions. [2023-12-02 17:38:51,159 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 119332 transitions. Word has length 264 [2023-12-02 17:38:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:51,160 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 119332 transitions. [2023-12-02 17:38:51,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 119332 transitions. [2023-12-02 17:38:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-02 17:38:51,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:51,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:51,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 17:38:51,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 17:38:51,368 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:51,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:51,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1237220710, now seen corresponding path program 1 times [2023-12-02 17:38:51,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:51,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114461984] [2023-12-02 17:38:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:51,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470476299] [2023-12-02 17:38:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:51,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:51,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:51,398 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:51,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 17:38:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:51,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:38:51,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:51,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:38:51,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-02 17:38:51,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:51,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-02 17:38:51,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:51,704 INFO L378 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 [2023-12-02 17:38:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:38:51,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:38:51,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:51,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114461984] [2023-12-02 17:38:51,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470476299] [2023-12-02 17:38:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470476299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:51,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:38:51,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:38:51,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402979512] [2023-12-02 17:38:51,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:51,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:38:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:38:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:51,728 INFO L87 Difference]: Start difference. First operand 41269 states and 119332 transitions. Second operand has 6 states, 5 states have (on average 53.4) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:52,282 INFO L93 Difference]: Finished difference Result 43278 states and 125114 transitions. [2023-12-02 17:38:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:38:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 53.4) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 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 269 [2023-12-02 17:38:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:52,372 INFO L225 Difference]: With dead ends: 43278 [2023-12-02 17:38:52,372 INFO L226 Difference]: Without dead ends: 43278 [2023-12-02 17:38:52,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:38:52,373 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 143 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:52,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1327 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:38:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43278 states. [2023-12-02 17:38:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43278 to 42667. [2023-12-02 17:38:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42667 states, 42643 states have (on average 2.8923621696409727) internal successors, (123339), 42666 states have internal predecessors, (123339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42667 states to 42667 states and 123339 transitions. [2023-12-02 17:38:53,371 INFO L78 Accepts]: Start accepts. Automaton has 42667 states and 123339 transitions. Word has length 269 [2023-12-02 17:38:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:53,372 INFO L495 AbstractCegarLoop]: Abstraction has 42667 states and 123339 transitions. [2023-12-02 17:38:53,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 53.4) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:38:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 42667 states and 123339 transitions. [2023-12-02 17:38:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-02 17:38:53,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:53,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:38:53,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 17:38:53,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 17:38:53,592 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:38:53,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1004800265, now seen corresponding path program 1 times [2023-12-02 17:38:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:53,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36568961] [2023-12-02 17:38:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:53,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:53,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:53,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987418362] [2023-12-02 17:38:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:53,748 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:53,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 17:38:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:53,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-02 17:38:54,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:55,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:38:55,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:38:55,241 INFO L378 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 27 treesize of output 20 [2023-12-02 17:38:55,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:38:55,302 INFO L378 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 27 treesize of output 20 [2023-12-02 17:38:55,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:38:55,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 17:38:55,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-12-02 17:38:55,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:55,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-12-02 17:38:55,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:55,577 INFO L378 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 [2023-12-02 17:38:55,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:38:55,626 INFO L378 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 56 treesize of output 45 [2023-12-02 17:38:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:38:55,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:38:55,678 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_thread2Thread1of1ForFork1_~j~0 4))) (and (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| .cse0 1)) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| 2 .cse0)) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| 3 .cse0)) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= |c_thread2Thread1of1ForFork1_#t~nondet8| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| .cse0)))))) is different from false [2023-12-02 17:38:55,698 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread2Thread1of1ForFork1_~j~0 4))) (let ((.cse2 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| 3 .cse1))) (let ((.cse0 (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse2 |c_thread2Thread1of1ForFork1_#t~nondet8|)))) (and (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| 2 .cse1)) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse2) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= |c_thread2Thread1of1ForFork1_#t~nondet8| (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| .cse1)))) (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| .cse1 1)) |c_thread2Thread1of1ForFork1_#t~nondet8|)))))) is different from false [2023-12-02 17:38:55,718 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread2Thread1of1ForFork1_~j~0 4))) (let ((.cse3 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| 2 .cse1)) (.cse2 (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| 3 .cse1))) (let ((.cse0 (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (store (select |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse3 |c_thread2Thread1of1ForFork1_#t~nondet8|) .cse2 |c_thread2Thread1of1ForFork1_#t~nondet8|)))) (and (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| .cse1)) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse2) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) .cse3) |c_thread2Thread1of1ForFork1_#t~nondet8|)) (forall ((v_ArrVal_2647 (Array Int Int))) (= |c_thread2Thread1of1ForFork1_#t~nondet8| (select (select (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2647) |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ |c_thread2Thread1of1ForFork1_#t~mem6.offset| .cse1 1)))))))) is different from false [2023-12-02 17:38:55,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:55,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 67 [2023-12-02 17:38:55,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:55,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 35 [2023-12-02 17:38:55,948 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-12-02 17:38:55,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2023-12-02 17:38:55,953 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-12-02 17:38:55,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2023-12-02 17:38:55,960 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-12-02 17:38:55,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2023-12-02 17:38:56,081 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2640 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2640) c_~B~0.base) c_~B~0.offset) |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2023-12-02 17:38:56,100 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2640 (Array Int Int)) (v_ArrVal_2639 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2639) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2640) c_~B~0.base) c_~B~0.offset)))) is different from false [2023-12-02 17:38:56,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:56,159 INFO L378 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 26 treesize of output 27 [2023-12-02 17:38:56,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:38:56,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 127 [2023-12-02 17:38:56,173 INFO L378 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 52 treesize of output 50 [2023-12-02 17:38:56,177 INFO L378 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 50 treesize of output 46 [2023-12-02 17:38:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-12-02 17:38:57,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36568961] [2023-12-02 17:38:57,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987418362] [2023-12-02 17:38:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987418362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:38:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332818323] [2023-12-02 17:38:57,190 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:38:57,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:38:57,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2023-12-02 17:38:57,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768761633] [2023-12-02 17:38:57,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:38:57,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 17:38:57,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 17:38:57,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=934, Unknown=12, NotChecked=330, Total=1406 [2023-12-02 17:38:57,195 INFO L87 Difference]: Start difference. First operand 42667 states and 123339 transitions. Second operand has 38 states, 37 states have (on average 14.297297297297296) internal successors, (529), 38 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:01,034 INFO L93 Difference]: Finished difference Result 80271 states and 231397 transitions. [2023-12-02 17:39:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 17:39:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 14.297297297297296) internal successors, (529), 38 states have internal predecessors, (529), 0 states have call successors, (0), 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 273 [2023-12-02 17:39:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:01,220 INFO L225 Difference]: With dead ends: 80271 [2023-12-02 17:39:01,220 INFO L226 Difference]: Without dead ends: 80271 [2023-12-02 17:39:01,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 511 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=392, Invalid=2166, Unknown=12, NotChecked=510, Total=3080 [2023-12-02 17:39:01,222 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1498 mSDsluCounter, 7792 mSDsCounter, 0 mSdLazyCounter, 3534 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 9229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5675 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:01,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 8354 Invalid, 9229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3534 Invalid, 0 Unknown, 5675 Unchecked, 2.6s Time] [2023-12-02 17:39:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80271 states. [2023-12-02 17:39:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80271 to 53516. [2023-12-02 17:39:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53516 states, 53492 states have (on average 2.9220818066252896) internal successors, (156308), 53515 states have internal predecessors, (156308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53516 states to 53516 states and 156308 transitions. [2023-12-02 17:39:02,601 INFO L78 Accepts]: Start accepts. Automaton has 53516 states and 156308 transitions. Word has length 273 [2023-12-02 17:39:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:02,601 INFO L495 AbstractCegarLoop]: Abstraction has 53516 states and 156308 transitions. [2023-12-02 17:39:02,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 14.297297297297296) internal successors, (529), 38 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 53516 states and 156308 transitions. [2023-12-02 17:39:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-02 17:39:02,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:02,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:39:02,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 17:39:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-02 17:39:02,813 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:39:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash 758861122, now seen corresponding path program 1 times [2023-12-02 17:39:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:02,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665015178] [2023-12-02 17:39:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:02,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:39:02,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159961341] [2023-12-02 17:39:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:02,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:02,834 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 17:39:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:03,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 17:39:03,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:39:04,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:39:04,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:39:04,930 INFO L378 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 27 treesize of output 20 [2023-12-02 17:39:05,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:39:05,021 INFO L378 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 27 treesize of output 20 [2023-12-02 17:39:05,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:39:05,304 INFO L378 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 [2023-12-02 17:39:05,332 INFO L378 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 [2023-12-02 17:39:05,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:39:05,363 INFO L378 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 23 treesize of output 16 [2023-12-02 17:39:05,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:05,391 INFO L378 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 [2023-12-02 17:39:05,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:05,425 INFO L378 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 [2023-12-02 17:39:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:39:05,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:39:05,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:05,671 INFO L378 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 2 case distinctions, treesize of input 25 treesize of output 31 [2023-12-02 17:39:05,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:05,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 28 [2023-12-02 17:39:05,680 INFO L378 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 7 treesize of output 3 [2023-12-02 17:39:05,684 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-12-02 17:39:05,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:39:06,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:06,010 INFO L378 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 25 treesize of output 26 [2023-12-02 17:39:06,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:06,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 118 [2023-12-02 17:39:06,024 INFO L378 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 24 treesize of output 20 [2023-12-02 17:39:06,030 INFO L378 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 27 treesize of output 25 [2023-12-02 17:39:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:39:07,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665015178] [2023-12-02 17:39:07,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:39:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159961341] [2023-12-02 17:39:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159961341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:39:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1366702993] [2023-12-02 17:39:07,102 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:39:07,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:39:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-12-02 17:39:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106071572] [2023-12-02 17:39:07,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:39:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-02 17:39:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-02 17:39:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1322, Unknown=22, NotChecked=0, Total=1482 [2023-12-02 17:39:07,107 INFO L87 Difference]: Start difference. First operand 53516 states and 156308 transitions. Second operand has 39 states, 38 states have (on average 13.947368421052632) internal successors, (530), 39 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:12,898 INFO L93 Difference]: Finished difference Result 101871 states and 291219 transitions. [2023-12-02 17:39:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 17:39:12,899 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 13.947368421052632) internal successors, (530), 39 states have internal predecessors, (530), 0 states have call successors, (0), 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 273 [2023-12-02 17:39:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:13,139 INFO L225 Difference]: With dead ends: 101871 [2023-12-02 17:39:13,139 INFO L226 Difference]: Without dead ends: 101871 [2023-12-02 17:39:13,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=640, Invalid=3498, Unknown=22, NotChecked=0, Total=4160 [2023-12-02 17:39:13,141 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 4766 mSDsluCounter, 11600 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 12226 SdHoareTripleChecker+Invalid, 5939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:13,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 12226 Invalid, 5939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 17:39:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101871 states. [2023-12-02 17:39:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101871 to 63221. [2023-12-02 17:39:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63221 states, 63197 states have (on average 2.9473867430416) internal successors, (186266), 63220 states have internal predecessors, (186266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63221 states to 63221 states and 186266 transitions. [2023-12-02 17:39:14,792 INFO L78 Accepts]: Start accepts. Automaton has 63221 states and 186266 transitions. Word has length 273 [2023-12-02 17:39:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:14,792 INFO L495 AbstractCegarLoop]: Abstraction has 63221 states and 186266 transitions. [2023-12-02 17:39:14,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 13.947368421052632) internal successors, (530), 39 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:14,792 INFO L276 IsEmpty]: Start isEmpty. Operand 63221 states and 186266 transitions. [2023-12-02 17:39:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-02 17:39:14,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:14,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-02 17:39:14,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 17:39:15,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 17:39:15,004 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:39:15,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1183154916, now seen corresponding path program 2 times [2023-12-02 17:39:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019869546] [2023-12-02 17:39:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:15,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:39:15,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975994631] [2023-12-02 17:39:15,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:39:15,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:15,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:15,030 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:15,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 17:39:15,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 17:39:15,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:39:15,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:39:15,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:39:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:39:15,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:39:15,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019869546] [2023-12-02 17:39:15,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:39:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975994631] [2023-12-02 17:39:15,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975994631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:39:15,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:39:15,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 17:39:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666927375] [2023-12-02 17:39:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:15,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:39:15,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:39:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:39:15,584 INFO L87 Difference]: Start difference. First operand 63221 states and 186266 transitions. Second operand has 10 states, 10 states have (on average 27.1) internal successors, (271), 10 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:16,394 INFO L93 Difference]: Finished difference Result 63171 states and 184536 transitions. [2023-12-02 17:39:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 17:39:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.1) internal successors, (271), 10 states have internal predecessors, (271), 0 states have call successors, (0), 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 273 [2023-12-02 17:39:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:16,723 INFO L225 Difference]: With dead ends: 63171 [2023-12-02 17:39:16,723 INFO L226 Difference]: Without dead ends: 63171 [2023-12-02 17:39:16,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:39:16,724 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1446 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:16,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3184 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:39:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63171 states. [2023-12-02 17:39:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63171 to 58096. [2023-12-02 17:39:17,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58096 states, 58072 states have (on average 2.9491837718694036) internal successors, (171265), 58095 states have internal predecessors, (171265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58096 states to 58096 states and 171265 transitions. [2023-12-02 17:39:17,815 INFO L78 Accepts]: Start accepts. Automaton has 58096 states and 171265 transitions. Word has length 273 [2023-12-02 17:39:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:17,816 INFO L495 AbstractCegarLoop]: Abstraction has 58096 states and 171265 transitions. [2023-12-02 17:39:17,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.1) internal successors, (271), 10 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 58096 states and 171265 transitions. [2023-12-02 17:39:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-02 17:39:17,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:17,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:39:17,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 17:39:18,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:18,046 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:39:18,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash 664940740, now seen corresponding path program 1 times [2023-12-02 17:39:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:18,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865796012] [2023-12-02 17:39:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:18,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:18,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:39:18,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234546406] [2023-12-02 17:39:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:18,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:18,073 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:18,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 17:39:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:18,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-02 17:39:18,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:39:18,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 17:39:18,917 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 17:39:18,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 17:39:19,132 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 17:39:19,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 17:39:19,307 INFO L378 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 [2023-12-02 17:39:19,332 INFO L378 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 [2023-12-02 17:39:19,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:19,363 INFO L378 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 [2023-12-02 17:39:19,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:19,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2023-12-02 17:39:19,480 INFO L378 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 56 treesize of output 45 [2023-12-02 17:39:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:39:19,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:39:19,531 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_thread1Thread1of1ForFork0_~i~0 4))) (and (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset .cse0 1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset 2 .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store |c_#race| c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset 3 .cse0)) |c_thread1Thread1of1ForFork0_#t~nondet3|)))) is different from false [2023-12-02 17:39:19,571 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse2 (+ c_~A~0.offset 3 .cse1))) (let ((.cse0 (store |c_#race| c_~A~0.base (store (select |c_#race| c_~A~0.base) .cse2 |c_thread1Thread1of1ForFork0_#t~nondet3|)))) (and (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store .cse0 c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset 2 .cse1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store .cse0 c_~B~0.base v_ArrVal_3210) c_~A~0.base) .cse2) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store .cse0 c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset .cse1 1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)) (forall ((v_ArrVal_3210 (Array Int Int))) (= (select (select (store .cse0 c_~B~0.base v_ArrVal_3210) c_~A~0.base) (+ c_~A~0.offset .cse1)) |c_thread1Thread1of1ForFork0_#t~nondet3|)))))) is different from false [2023-12-02 17:39:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:39:20,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865796012] [2023-12-02 17:39:20,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:39:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234546406] [2023-12-02 17:39:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234546406] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:39:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:39:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [28] total 42 [2023-12-02 17:39:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276687008] [2023-12-02 17:39:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 17:39:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 17:39:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1473, Unknown=2, NotChecked=158, Total=1806 [2023-12-02 17:39:20,352 INFO L87 Difference]: Start difference. First operand 58096 states and 171265 transitions. Second operand has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:24,319 INFO L93 Difference]: Finished difference Result 82792 states and 240455 transitions. [2023-12-02 17:39:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 17:39:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2023-12-02 17:39:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:24,565 INFO L225 Difference]: With dead ends: 82792 [2023-12-02 17:39:24,565 INFO L226 Difference]: Without dead ends: 82792 [2023-12-02 17:39:24,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 557 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=806, Invalid=7210, Unknown=2, NotChecked=354, Total=8372 [2023-12-02 17:39:24,567 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1396 mSDsluCounter, 13851 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 15012 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3047 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:24,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 15012 Invalid, 7329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 4229 Invalid, 0 Unknown, 3047 Unchecked, 2.4s Time] [2023-12-02 17:39:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82792 states. [2023-12-02 17:39:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82792 to 60269. [2023-12-02 17:39:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60269 states, 60245 states have (on average 2.9514316540791765) internal successors, (177809), 60268 states have internal predecessors, (177809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60269 states to 60269 states and 177809 transitions. [2023-12-02 17:39:25,748 INFO L78 Accepts]: Start accepts. Automaton has 60269 states and 177809 transitions. Word has length 300 [2023-12-02 17:39:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:25,748 INFO L495 AbstractCegarLoop]: Abstraction has 60269 states and 177809 transitions. [2023-12-02 17:39:25,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 60269 states and 177809 transitions. [2023-12-02 17:39:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-02 17:39:25,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:25,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:39:25,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-02 17:39:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:25,970 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:39:25,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1468404010, now seen corresponding path program 2 times [2023-12-02 17:39:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160071441] [2023-12-02 17:39:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:25,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:39:25,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946856940] [2023-12-02 17:39:25,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:39:25,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:25,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:25,993 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:25,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 17:39:26,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 17:39:26,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:39:26,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-02 17:39:26,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:39:26,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 17:39:26,484 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 17:39:26,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 17:39:26,577 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 17:39:26,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 17:39:27,063 INFO L378 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 [2023-12-02 17:39:27,085 INFO L378 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 [2023-12-02 17:39:27,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:27,115 INFO L378 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 [2023-12-02 17:39:27,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:27,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2023-12-02 17:39:27,228 INFO L378 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 56 treesize of output 45 [2023-12-02 17:39:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:39:27,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:39:27,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:27,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160071441] [2023-12-02 17:39:27,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:39:27,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946856940] [2023-12-02 17:39:27,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946856940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:39:27,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:39:27,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-02 17:39:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192027694] [2023-12-02 17:39:27,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:27,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 17:39:27,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 17:39:27,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-02 17:39:27,260 INFO L87 Difference]: Start difference. First operand 60269 states and 177809 transitions. Second operand has 21 states, 20 states have (on average 14.9) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:30,678 INFO L93 Difference]: Finished difference Result 146756 states and 437520 transitions. [2023-12-02 17:39:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-02 17:39:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 14.9) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 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 300 [2023-12-02 17:39:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:31,192 INFO L225 Difference]: With dead ends: 146756 [2023-12-02 17:39:31,192 INFO L226 Difference]: Without dead ends: 146756 [2023-12-02 17:39:31,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=434, Invalid=2758, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 17:39:31,193 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1604 mSDsluCounter, 5966 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 3528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:31,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 6533 Invalid, 3528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3474 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 17:39:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146756 states. [2023-12-02 17:39:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146756 to 81678. [2023-12-02 17:39:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81678 states, 81654 states have (on average 2.9867489651456145) internal successors, (243880), 81677 states have internal predecessors, (243880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81678 states to 81678 states and 243880 transitions. [2023-12-02 17:39:33,243 INFO L78 Accepts]: Start accepts. Automaton has 81678 states and 243880 transitions. Word has length 300 [2023-12-02 17:39:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:33,243 INFO L495 AbstractCegarLoop]: Abstraction has 81678 states and 243880 transitions. [2023-12-02 17:39:33,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 14.9) internal successors, (298), 21 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 81678 states and 243880 transitions. [2023-12-02 17:39:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-02 17:39:33,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:33,264 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:39:33,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 17:39:33,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:33,464 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:39:33,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:33,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1123609742, now seen corresponding path program 1 times [2023-12-02 17:39:33,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981227713] [2023-12-02 17:39:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:33,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:39:33,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211288425] [2023-12-02 17:39:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:33,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:33,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:33,488 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:33,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 17:39:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:33,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-02 17:39:33,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:39:33,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 17:39:34,421 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 17:39:34,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 17:39:34,530 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 17:39:34,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 17:39:34,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 17:39:34,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-02 17:39:34,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:39:34,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:39:35,029 INFO L378 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 37 treesize of output 26 [2023-12-02 17:39:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:39:35,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:39:35,221 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread2Thread1of1ForFork1_~i~1 4))) (let ((.cse2 (+ .cse1 3 c_~B~0.offset))) (let ((.cse0 (store |c_#race| c_~B~0.base (store (select |c_#race| c_~B~0.base) .cse2 0)))) (and (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) (+ .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse2) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= 0 (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) (+ .cse1 c_~B~0.offset 1)))) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) (+ .cse1 2 c_~B~0.offset)) 0)))))) is different from false [2023-12-02 17:39:35,239 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_thread2Thread1of1ForFork1_~i~1 4))) (let ((.cse2 (+ .cse1 2 c_~B~0.offset)) (.cse3 (+ .cse1 3 c_~B~0.offset))) (let ((.cse0 (store |c_#race| c_~B~0.base (store (store (select |c_#race| c_~B~0.base) .cse2 0) .cse3 0)))) (and (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) (+ .cse1 c_~B~0.offset 1)) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse2) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) (+ .cse1 c_~B~0.offset)) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse3) 0)))))) is different from false [2023-12-02 17:39:35,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:35,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 67 [2023-12-02 17:39:35,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:35,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 39 [2023-12-02 17:39:35,420 INFO L378 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 10 treesize of output 3 [2023-12-02 17:39:35,425 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-12-02 17:39:35,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2023-12-02 17:39:35,430 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-12-02 17:39:35,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2023-12-02 17:39:35,436 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-12-02 17:39:35,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2023-12-02 17:39:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:39:36,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:36,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981227713] [2023-12-02 17:39:36,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:39:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211288425] [2023-12-02 17:39:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211288425] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:39:36,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:39:36,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [26] total 44 [2023-12-02 17:39:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944700939] [2023-12-02 17:39:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:36,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 17:39:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 17:39:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1566, Unknown=42, NotChecked=166, Total=1980 [2023-12-02 17:39:36,147 INFO L87 Difference]: Start difference. First operand 81678 states and 243880 transitions. Second operand has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:38,581 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (* c_thread2Thread1of1ForFork1_~i~1 4))) (let ((.cse4 (+ .cse5 c_~B~0.offset 1)) (.cse3 (+ .cse5 2 c_~B~0.offset)) (.cse1 (+ .cse5 3 c_~B~0.offset))) (let ((.cse2 (< c_~M~0 1)) (.cse0 (store |c_#race| c_~B~0.base (store (store (store (select |c_#race| c_~B~0.base) .cse4 0) .cse3 0) .cse1 0)))) (and (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse1) 0)) (or .cse2 (not (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0))) (or .cse2 (not (= (select |c_#valid| c_~A~0.base) 0))) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse3) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse4) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= 0 (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) (+ .cse5 c_~B~0.offset)))))))) is different from false [2023-12-02 17:39:42,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 17:39:45,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 17:39:47,004 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (* c_thread2Thread1of1ForFork1_~i~1 4))) (let ((.cse6 (select |c_#race| c_~B~0.base)) (.cse1 (+ .cse7 c_~B~0.offset 1)) (.cse4 (+ .cse7 2 c_~B~0.offset)) (.cse3 (+ .cse7 3 c_~B~0.offset))) (let ((.cse2 (store |c_#race| c_~B~0.base (store (store (store .cse6 .cse1 0) .cse4 0) .cse3 0))) (.cse5 (+ .cse7 c_~B~0.offset)) (.cse0 (store |c_#race| c_~B~0.base (store (store .cse6 .cse4 0) .cse3 0)))) (and (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse1) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse2 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse3) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse4) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse2 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse4) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse2 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse1) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= 0 (select (select (store .cse2 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse5))) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse5) 0)) (forall ((v_ArrVal_3646 (Array Int Int))) (= (select (select (store .cse0 c_~A~0.base v_ArrVal_3646) c_~B~0.base) .cse3) 0)))))) is different from false [2023-12-02 17:39:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:39:48,880 INFO L93 Difference]: Finished difference Result 211857 states and 630296 transitions. [2023-12-02 17:39:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-02 17:39:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2023-12-02 17:39:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:39:49,495 INFO L225 Difference]: With dead ends: 211857 [2023-12-02 17:39:49,496 INFO L226 Difference]: Without dead ends: 211857 [2023-12-02 17:39:49,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 554 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=712, Invalid=6562, Unknown=52, NotChecked=684, Total=8010 [2023-12-02 17:39:49,499 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 2149 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 3745 mSolverCounterSat, 121 mSolverCounterUnsat, 564 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 13599 SdHoareTripleChecker+Invalid, 11446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3745 IncrementalHoareTripleChecker+Invalid, 564 IncrementalHoareTripleChecker+Unknown, 7016 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:39:49,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 13599 Invalid, 11446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 3745 Invalid, 564 Unknown, 7016 Unchecked, 10.3s Time] [2023-12-02 17:39:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211857 states. [2023-12-02 17:39:52,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211857 to 155199. [2023-12-02 17:39:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155199 states, 155175 states have (on average 3.040444659255679) internal successors, (471801), 155198 states have internal predecessors, (471801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155199 states to 155199 states and 471801 transitions. [2023-12-02 17:39:53,660 INFO L78 Accepts]: Start accepts. Automaton has 155199 states and 471801 transitions. Word has length 300 [2023-12-02 17:39:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:39:53,661 INFO L495 AbstractCegarLoop]: Abstraction has 155199 states and 471801 transitions. [2023-12-02 17:39:53,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 15.789473684210526) internal successors, (300), 20 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:39:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 155199 states and 471801 transitions. [2023-12-02 17:39:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-02 17:39:53,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:39:53,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:39:53,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 17:39:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:53,889 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:39:53,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:39:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1123646942, now seen corresponding path program 2 times [2023-12-02 17:39:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:39:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420931090] [2023-12-02 17:39:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:39:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:39:53,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:39:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126362493] [2023-12-02 17:39:53,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:39:53,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:39:53,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:39:53,915 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:39:53,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 17:39:54,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 17:39:54,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:39:54,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-02 17:39:54,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:39:54,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 17:39:54,541 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 17:39:54,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 17:39:54,704 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 17:39:54,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 17:39:55,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 17:39:55,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-02 17:39:55,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:39:55,815 INFO L378 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 30 treesize of output 21 [2023-12-02 17:39:55,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:39:55,868 INFO L378 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 [2023-12-02 17:39:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:39:55,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:39:55,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:39:55,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420931090] [2023-12-02 17:39:55,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:39:55,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126362493] [2023-12-02 17:39:55,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126362493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:39:55,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:39:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 17:39:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135491681] [2023-12-02 17:39:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:39:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 17:39:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:39:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 17:39:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2023-12-02 17:39:55,917 INFO L87 Difference]: Start difference. First operand 155199 states and 471801 transitions. Second operand has 23 states, 22 states have (on average 13.545454545454545) internal successors, (298), 23 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:40:02,523 INFO L93 Difference]: Finished difference Result 358899 states and 1085345 transitions. [2023-12-02 17:40:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-02 17:40:02,524 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 13.545454545454545) internal successors, (298), 23 states have internal predecessors, (298), 0 states have call successors, (0), 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 300 [2023-12-02 17:40:02,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:40:03,644 INFO L225 Difference]: With dead ends: 358899 [2023-12-02 17:40:03,645 INFO L226 Difference]: Without dead ends: 358899 [2023-12-02 17:40:03,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=586, Invalid=3574, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 17:40:03,646 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1850 mSDsluCounter, 6731 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 7270 SdHoareTripleChecker+Invalid, 4543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:40:03,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 7270 Invalid, 4543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 17:40:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358899 states. [2023-12-02 17:40:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358899 to 230817. [2023-12-02 17:40:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230817 states, 230793 states have (on average 3.0519686472293355) internal successors, (704373), 230816 states have internal predecessors, (704373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230817 states to 230817 states and 704373 transitions. [2023-12-02 17:40:10,787 INFO L78 Accepts]: Start accepts. Automaton has 230817 states and 704373 transitions. Word has length 300 [2023-12-02 17:40:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:40:10,788 INFO L495 AbstractCegarLoop]: Abstraction has 230817 states and 704373 transitions. [2023-12-02 17:40:10,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 13.545454545454545) internal successors, (298), 23 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 230817 states and 704373 transitions. [2023-12-02 17:40:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:40:10,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:40:10,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:40:10,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-02 17:40:11,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-02 17:40:11,025 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:40:11,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:40:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash -530884825, now seen corresponding path program 1 times [2023-12-02 17:40:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:40:11,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980804925] [2023-12-02 17:40:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:11,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:40:11,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:40:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830668805] [2023-12-02 17:40:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:11,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:40:11,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:40:11,052 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:40:11,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 17:40:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:40:11,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-02 17:40:11,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:40:14,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:40:14,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:14,659 INFO L378 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 27 treesize of output 20 [2023-12-02 17:40:14,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:14,782 INFO L378 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 27 treesize of output 20 [2023-12-02 17:40:15,063 INFO L378 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 [2023-12-02 17:40:15,183 INFO L378 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 [2023-12-02 17:40:15,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:40:15,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,323 INFO L378 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 23 treesize of output 16 [2023-12-02 17:40:15,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,347 INFO L378 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 23 treesize of output 16 [2023-12-02 17:40:15,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,365 INFO L378 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 23 treesize of output 16 [2023-12-02 17:40:15,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,389 INFO L378 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 23 treesize of output 16 [2023-12-02 17:40:15,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:40:15,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:40:15,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,662 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,689 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:15,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,712 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:15,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,737 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:15,849 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:40:15,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:40:15,971 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4105 (Array Int Int))) (= 0 (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)))) (forall ((v_ArrVal_4105 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_4105 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_4105 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0))) is different from false [2023-12-02 17:40:18,944 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse3 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset))) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_4098 (Array Int Int)) (v_ArrVal_4104 (Array Int Int)) (v_ArrVal_4105 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_4098))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4104) .cse3 v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_4098 (Array Int Int)) (v_ArrVal_4104 (Array Int Int)) (v_ArrVal_4105 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_4098))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4104) .cse3 v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_4098 (Array Int Int)) (v_ArrVal_4104 (Array Int Int)) (v_ArrVal_4105 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_4098))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4104) .cse3 v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_4098 (Array Int Int)) (v_ArrVal_4104 (Array Int Int)) (v_ArrVal_4105 (Array Int Int))) (= (select (select (store (store (let ((.cse6 (store |c_#race| c_~B~0.base v_ArrVal_4098))) (store .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4104) .cse3 v_ArrVal_4105) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)))) is different from false [2023-12-02 17:40:19,249 INFO L378 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 7 treesize of output 3 [2023-12-02 17:40:19,256 INFO L378 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 24 treesize of output 16 [2023-12-02 17:40:19,262 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,263 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:19,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-12-02 17:40:19,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:19,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 26 [2023-12-02 17:40:19,287 INFO L378 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 [2023-12-02 17:40:19,289 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,292 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,297 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-12-02 17:40:19,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 17:40:19,545 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) (not (= c_~F~0.base |c_ULTIMATE.start_main_~#t1~0#1.base|)) (forall ((v_ArrVal_4091 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4091) c_~B~0.base) c_~B~0.offset))))) is different from false [2023-12-02 17:40:19,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:19,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-12-02 17:40:19,787 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:19,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:19,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2023-12-02 17:40:19,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-02 17:40:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:40:21,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:40:21,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980804925] [2023-12-02 17:40:21,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:40:21,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830668805] [2023-12-02 17:40:21,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830668805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:40:21,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2062819709] [2023-12-02 17:40:21,887 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:40:21,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:40:21,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-02 17:40:21,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139752306] [2023-12-02 17:40:21,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:40:21,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 17:40:21,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:40:21,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 17:40:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2176, Unknown=75, NotChecked=294, Total=2756 [2023-12-02 17:40:21,891 INFO L87 Difference]: Start difference. First operand 230817 states and 704373 transitions. Second operand has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:40:37,107 INFO L93 Difference]: Finished difference Result 276844 states and 827237 transitions. [2023-12-02 17:40:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 17:40:37,108 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:40:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:40:38,196 INFO L225 Difference]: With dead ends: 276844 [2023-12-02 17:40:38,196 INFO L226 Difference]: Without dead ends: 276844 [2023-12-02 17:40:38,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 553 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1041, Invalid=6894, Unknown=87, NotChecked=534, Total=8556 [2023-12-02 17:40:38,199 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 5102 mSDsluCounter, 14195 mSDsCounter, 0 mSdLazyCounter, 7905 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5102 SdHoareTripleChecker+Valid, 14758 SdHoareTripleChecker+Invalid, 12619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 7905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4301 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:40:38,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5102 Valid, 14758 Invalid, 12619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [413 Valid, 7905 Invalid, 0 Unknown, 4301 Unchecked, 9.9s Time] [2023-12-02 17:40:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276844 states. [2023-12-02 17:40:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276844 to 233290. [2023-12-02 17:40:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233290 states, 233266 states have (on average 3.052245076436343) internal successors, (711985), 233289 states have internal predecessors, (711985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233290 states to 233290 states and 711985 transitions. [2023-12-02 17:40:44,174 INFO L78 Accepts]: Start accepts. Automaton has 233290 states and 711985 transitions. Word has length 303 [2023-12-02 17:40:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:40:44,174 INFO L495 AbstractCegarLoop]: Abstraction has 233290 states and 711985 transitions. [2023-12-02 17:40:44,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:40:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 233290 states and 711985 transitions. [2023-12-02 17:40:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:40:44,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:40:44,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:40:44,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-02 17:40:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-02 17:40:44,415 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:40:44,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:40:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1130402339, now seen corresponding path program 2 times [2023-12-02 17:40:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:40:44,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064429105] [2023-12-02 17:40:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:40:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:40:44,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:40:44,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70874032] [2023-12-02 17:40:44,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:40:44,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:40:44,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:40:44,442 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:40:44,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 17:40:44,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 17:40:44,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:40:44,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-02 17:40:44,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:40:47,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:40:48,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:48,254 INFO L378 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 27 treesize of output 20 [2023-12-02 17:40:48,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:48,406 INFO L378 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 27 treesize of output 20 [2023-12-02 17:40:48,721 INFO L378 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 [2023-12-02 17:40:48,780 INFO L378 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 [2023-12-02 17:40:48,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:40:48,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:40:49,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,055 INFO L378 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 30 treesize of output 21 [2023-12-02 17:40:49,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,090 INFO L378 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 30 treesize of output 21 [2023-12-02 17:40:49,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,121 INFO L378 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 30 treesize of output 21 [2023-12-02 17:40:49,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,222 INFO L378 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 30 treesize of output 21 [2023-12-02 17:40:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-12-02 17:40:49,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,601 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 17:40:49,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2023-12-02 17:40:49,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,702 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:49,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,729 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:49,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,758 INFO L378 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 37 treesize of output 26 [2023-12-02 17:40:49,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:40:49,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2023-12-02 17:40:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:40:49,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:40:50,421 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse0 (store |c_#race| c_~F~0.base v_ArrVal_4345))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse1 (store |c_#race| c_~F~0.base v_ArrVal_4345))) (store .cse1 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse1 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= 0 (select (select (let ((.cse2 (store |c_#race| c_~F~0.base v_ArrVal_4345))) (store .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)))) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse3 (store |c_#race| c_~F~0.base v_ArrVal_4345))) (store .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0))) is different from false [2023-12-02 17:40:50,603 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse1 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse5 0)))) (and (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse0 (store .cse1 c_~F~0.base v_ArrVal_4345))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse2 (store .cse1 c_~F~0.base v_ArrVal_4345))) (store .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse2 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse3 (store .cse1 c_~F~0.base v_ArrVal_4345))) (store .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse3 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse4 (store .cse1 c_~F~0.base v_ArrVal_4345))) (store .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse5) 0))))) is different from false [2023-12-02 17:40:50,876 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse0 (store (let ((.cse1 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse1 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0))) c_~F~0.base v_ArrVal_4345))) (store .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse0 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (not (= (select v_ArrVal_4340 .cse3) 0)))) (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse4 (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0))) c_~F~0.base v_ArrVal_4345))) (store .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse4 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (not (= (select v_ArrVal_4340 .cse3) 0)))) (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse3) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse6 (store (let ((.cse7 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse7 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0))) c_~F~0.base v_ArrVal_4345))) (store .cse6 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse6 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse3) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse8 (store (let ((.cse9 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse9 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0))) c_~F~0.base v_ArrVal_4345))) (store .cse8 |c_thread2Thread1of1ForFork1_#t~mem6.base| (store (select .cse8 |c_thread2Thread1of1ForFork1_#t~mem6.base|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))))) is different from false [2023-12-02 17:40:51,096 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) .cse0)) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse0) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse1 (store (let ((.cse2 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~F~0.base v_ArrVal_4345))) (store .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)))) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse0) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse5 (store (let ((.cse6 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~F~0.base v_ArrVal_4345))) (store .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse7 (store (let ((.cse8 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse8 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~F~0.base v_ArrVal_4345))) (store .cse7 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse7 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (not (= (select v_ArrVal_4340 .cse0) 0)))) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse0) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse9 (store (let ((.cse10 (store |c_#race| c_~B~0.base v_ArrVal_4340))) (store .cse10 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) c_~F~0.base v_ArrVal_4345))) (store .cse9 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse9 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0))))))))) is different from false [2023-12-02 17:40:53,194 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)) (.cse8 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse1 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse8 0))) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse4 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) .cse3))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse0 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_4345))) (store .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (not (= (select v_ArrVal_4340 .cse3) 0)))) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse5 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_4345))) (store .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (not (= (select v_ArrVal_4340 .cse3) 0)))))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse6 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_4345))) (store .cse6 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse6 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (not (= (select v_ArrVal_4340 .cse3) 0)))) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse3) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse7 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_4345))) (store .cse7 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse7 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse8) 0)))) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|)))))) is different from false [2023-12-02 17:40:55,311 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)) (.cse4 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) (.cse8 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse2 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4 0) .cse8 0))) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse5 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) .cse0))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse0) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse1 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse2 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0)) c_~F~0.base v_ArrVal_4345))) (store .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4) 0)))) (< .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (< .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse0) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse6 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse2 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0)) c_~F~0.base v_ArrVal_4345))) (store .cse6 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse6 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse7 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse2 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0)) c_~F~0.base v_ArrVal_4345))) (store .cse7 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse7 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse8) 0)) (not (= (select v_ArrVal_4340 .cse0) 0)))) (< .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_31| Int)) (or (forall ((v_ArrVal_4340 (Array Int Int))) (or (not (= (select v_ArrVal_4340 .cse0) 0)) (forall ((|thread2Thread1of1ForFork1_#t~nondet8| Int) (v_ArrVal_4345 (Array Int Int)) (|thread2Thread1of1ForFork1_#t~mem6.offset| Int) (thread2Thread1of1ForFork1_~j~0 Int)) (= (select (select (let ((.cse9 (store (store (store |c_#race| c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse2 c_~B~0.base v_ArrVal_4340) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0)) c_~F~0.base v_ArrVal_4345))) (store .cse9 |v_thread2Thread1of1ForFork1_#t~mem6.base_31| (store (select .cse9 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|) (+ (* thread2Thread1of1ForFork1_~j~0 4) |thread2Thread1of1ForFork1_#t~mem6.offset|) |thread2Thread1of1ForFork1_#t~nondet8|))) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)))) (< .cse5 |v_thread2Thread1of1ForFork1_#t~mem6.base_31|)))))) is different from false [2023-12-02 17:40:55,409 INFO L349 Elim1Store]: treesize reduction 23, result has 62.9 percent of original size [2023-12-02 17:40:55,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1774 treesize of output 1372 [2023-12-02 17:40:55,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:55,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 520 treesize of output 508 [2023-12-02 17:40:55,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:55,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 532 treesize of output 522 [2023-12-02 17:40:55,530 INFO L378 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 562 treesize of output 546 [2023-12-02 17:40:55,821 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,826 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:55,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 106 [2023-12-02 17:40:55,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 122 [2023-12-02 17:40:55,878 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-12-02 17:40:55,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 66 [2023-12-02 17:40:55,904 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,907 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,915 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-02 17:40:55,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 1 [2023-12-02 17:40:55,922 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:55,926 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:56,162 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) (not (= c_~F~0.base |c_ULTIMATE.start_main_~#t1~0#1.base|)) (forall ((v_ArrVal_4332 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4332) c_~B~0.base) c_~B~0.offset) 1) |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2023-12-02 17:40:56,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:56,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-12-02 17:40:56,431 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:40:56,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:40:56,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2023-12-02 17:40:56,452 INFO L378 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 7 treesize of output 5 [2023-12-02 17:40:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:40:58,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:40:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064429105] [2023-12-02 17:40:58,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:40:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70874032] [2023-12-02 17:40:58,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70874032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:40:58,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1154124585] [2023-12-02 17:40:58,563 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:40:58,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:40:58,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 54 [2023-12-02 17:40:58,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082904841] [2023-12-02 17:40:58,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:40:58,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-02 17:40:58,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:40:58,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-02 17:40:58,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2055, Unknown=10, NotChecked=686, Total=2970 [2023-12-02 17:40:58,566 INFO L87 Difference]: Start difference. First operand 233290 states and 711985 transitions. Second operand has 55 states, 54 states have (on average 10.925925925925926) internal successors, (590), 55 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:41:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:41:15,387 INFO L93 Difference]: Finished difference Result 278072 states and 830537 transitions. [2023-12-02 17:41:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 17:41:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 10.925925925925926) internal successors, (590), 55 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:41:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:41:16,463 INFO L225 Difference]: With dead ends: 278072 [2023-12-02 17:41:16,463 INFO L226 Difference]: Without dead ends: 278072 [2023-12-02 17:41:16,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 551 SyntacticMatches, 8 SemanticMatches, 100 ConstructedPredicates, 7 IntricatePredicates, 4 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1279, Invalid=7669, Unknown=10, NotChecked=1344, Total=10302 [2023-12-02 17:41:16,466 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 3639 mSDsluCounter, 10653 mSDsCounter, 0 mSdLazyCounter, 5965 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 11259 SdHoareTripleChecker+Invalid, 17386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 5965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11061 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:41:16,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3639 Valid, 11259 Invalid, 17386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [360 Valid, 5965 Invalid, 0 Unknown, 11061 Unchecked, 9.6s Time] [2023-12-02 17:41:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278072 states. [2023-12-02 17:41:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278072 to 233690. [2023-12-02 17:41:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233690 states, 233666 states have (on average 3.052498009980057) internal successors, (713265), 233689 states have internal predecessors, (713265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:41:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233690 states to 233690 states and 713265 transitions. [2023-12-02 17:41:22,169 INFO L78 Accepts]: Start accepts. Automaton has 233690 states and 713265 transitions. Word has length 303 [2023-12-02 17:41:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:41:22,169 INFO L495 AbstractCegarLoop]: Abstraction has 233690 states and 713265 transitions. [2023-12-02 17:41:22,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 10.925925925925926) internal successors, (590), 55 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:41:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 233690 states and 713265 transitions. [2023-12-02 17:41:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:41:22,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:41:22,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:41:22,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 17:41:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:22,409 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:41:22,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:41:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash 535024939, now seen corresponding path program 3 times [2023-12-02 17:41:22,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:41:22,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458124957] [2023-12-02 17:41:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:22,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:41:22,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:41:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622287380] [2023-12-02 17:41:22,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:41:22,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:22,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:41:22,439 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:41:22,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 17:41:24,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:41:24,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:41:24,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-02 17:41:24,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:41:27,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:41:27,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:27,759 INFO L378 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 27 treesize of output 20 [2023-12-02 17:41:27,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:27,897 INFO L378 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 27 treesize of output 20 [2023-12-02 17:41:28,218 INFO L378 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 [2023-12-02 17:41:28,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:41:28,353 INFO L378 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 [2023-12-02 17:41:28,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,425 INFO L378 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 23 treesize of output 16 [2023-12-02 17:41:28,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,444 INFO L378 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 23 treesize of output 16 [2023-12-02 17:41:28,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,468 INFO L378 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 23 treesize of output 16 [2023-12-02 17:41:28,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,494 INFO L378 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 23 treesize of output 16 [2023-12-02 17:41:28,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:41:28,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:41:28,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,794 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:28,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,816 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:28,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,844 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,866 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:28,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:28,976 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:41:29,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:41:29,613 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0))))) is different from false [2023-12-02 17:41:29,646 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0))))) is different from false [2023-12-02 17:41:29,695 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= 0 (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_4580))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1))) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_4580))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_4580))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_4580))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_4586) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)))) is different from false [2023-12-02 17:41:30,029 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4 0))) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse3 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_33| Int)) (or (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_4586) |v_thread2Thread1of1ForFork1_#t~mem6.base_33| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (< .cse3 |v_thread2Thread1of1ForFork1_#t~mem6.base_33|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_33| Int)) (or (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_4586) |v_thread2Thread1of1ForFork1_#t~mem6.base_33| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (< .cse3 |v_thread2Thread1of1ForFork1_#t~mem6.base_33|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_33| Int)) (or (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_4586) |v_thread2Thread1of1ForFork1_#t~mem6.base_33| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4) 0)) (< .cse3 |v_thread2Thread1of1ForFork1_#t~mem6.base_33|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_33| Int)) (or (forall ((v_ArrVal_4586 (Array Int Int)) (v_ArrVal_4587 (Array Int Int)) (v_ArrVal_4580 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_4580) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_4586) |v_thread2Thread1of1ForFork1_#t~mem6.base_33| v_ArrVal_4587) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (< .cse3 |v_thread2Thread1of1ForFork1_#t~mem6.base_33|)))))) is different from false [2023-12-02 17:41:30,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:41:30,052 INFO L378 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 2 case distinctions, treesize of input 162 treesize of output 154 [2023-12-02 17:41:30,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2023-12-02 17:41:30,068 INFO L378 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 34 treesize of output 30 [2023-12-02 17:41:30,073 INFO L378 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 30 treesize of output 26 [2023-12-02 17:41:30,079 INFO L378 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 28 treesize of output 20 [2023-12-02 17:41:30,103 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,109 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-12-02 17:41:30,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:41:30,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,116 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,116 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:41:30,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-12-02 17:41:30,703 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:41:30,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:41:30,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2023-12-02 17:41:30,714 INFO L378 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 7 treesize of output 5 [2023-12-02 17:41:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:41:32,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:41:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458124957] [2023-12-02 17:41:32,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:41:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622287380] [2023-12-02 17:41:32,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622287380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:41:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1960385368] [2023-12-02 17:41:32,761 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:41:32,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:41:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2023-12-02 17:41:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985038602] [2023-12-02 17:41:32,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:41:32,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-02 17:41:32,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:41:32,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-02 17:41:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2199, Unknown=59, NotChecked=396, Total=2862 [2023-12-02 17:41:32,764 INFO L87 Difference]: Start difference. First operand 233690 states and 713265 transitions. Second operand has 54 states, 53 states have (on average 11.132075471698114) internal successors, (590), 54 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:41:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:41:47,565 INFO L93 Difference]: Finished difference Result 276275 states and 825524 transitions. [2023-12-02 17:41:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-02 17:41:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 11.132075471698114) internal successors, (590), 54 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:41:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:41:48,664 INFO L225 Difference]: With dead ends: 276275 [2023-12-02 17:41:48,664 INFO L226 Difference]: Without dead ends: 276275 [2023-12-02 17:41:48,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 552 SyntacticMatches, 5 SemanticMatches, 94 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1088, Invalid=7238, Unknown=62, NotChecked=732, Total=9120 [2023-12-02 17:41:48,665 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 4863 mSDsluCounter, 13992 mSDsCounter, 0 mSdLazyCounter, 8115 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4863 SdHoareTripleChecker+Valid, 14546 SdHoareTripleChecker+Invalid, 14457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 8115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5875 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:41:48,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4863 Valid, 14546 Invalid, 14457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [467 Valid, 8115 Invalid, 0 Unknown, 5875 Unchecked, 9.6s Time] [2023-12-02 17:41:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276275 states. [2023-12-02 17:41:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276275 to 234746. [2023-12-02 17:41:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234746 states, 234722 states have (on average 3.052504665093174) internal successors, (716490), 234745 states have internal predecessors, (716490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:41:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234746 states to 234746 states and 716490 transitions. [2023-12-02 17:41:54,431 INFO L78 Accepts]: Start accepts. Automaton has 234746 states and 716490 transitions. Word has length 303 [2023-12-02 17:41:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:41:54,431 INFO L495 AbstractCegarLoop]: Abstraction has 234746 states and 716490 transitions. [2023-12-02 17:41:54,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 11.132075471698114) internal successors, (590), 54 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:41:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 234746 states and 716490 transitions. [2023-12-02 17:41:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:41:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:41:54,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:41:54,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-02 17:41:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-02 17:41:54,673 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:41:54,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:41:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1034745755, now seen corresponding path program 4 times [2023-12-02 17:41:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:41:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515398834] [2023-12-02 17:41:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:41:54,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:41:54,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:41:54,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871519029] [2023-12-02 17:41:54,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 17:41:54,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:41:54,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:41:54,702 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:41:54,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-02 17:41:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:41:55,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-02 17:41:55,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:41:57,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:41:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:58,397 INFO L378 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 27 treesize of output 20 [2023-12-02 17:41:58,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:58,522 INFO L378 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 27 treesize of output 20 [2023-12-02 17:41:58,636 INFO L378 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 [2023-12-02 17:41:58,707 INFO L378 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 [2023-12-02 17:41:58,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:41:59,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:41:59,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:41:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,488 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,521 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,555 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,585 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,761 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,789 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,811 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,839 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:41:59,948 INFO L378 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 37 treesize of output 26 [2023-12-02 17:41:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:41:59,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:42:00,059 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4828 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_4828 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_4828 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_4828 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0))) is different from false [2023-12-02 17:42:03,744 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0) .cse2 0))) (.cse1 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset))) (and (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4823 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_4823) c_~F~0.base v_ArrVal_4827) .cse1 v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4823 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_4823) c_~F~0.base v_ArrVal_4827) .cse1 v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4823 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_4823) c_~F~0.base v_ArrVal_4827) .cse1 v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_4828 (Array Int Int)) (v_ArrVal_4823 (Array Int Int)) (v_ArrVal_4827 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_4823) c_~F~0.base v_ArrVal_4827) .cse1 v_ArrVal_4828) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0))))) is different from false [2023-12-02 17:42:03,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:03,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 61 [2023-12-02 17:42:03,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:03,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 636 treesize of output 590 [2023-12-02 17:42:03,980 INFO L378 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 58 treesize of output 42 [2023-12-02 17:42:03,991 INFO L378 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 28 treesize of output 24 [2023-12-02 17:42:03,994 INFO L378 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 42 treesize of output 34 [2023-12-02 17:42:04,018 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-02 17:42:04,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 1 [2023-12-02 17:42:04,025 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-02 17:42:04,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 1 [2023-12-02 17:42:04,031 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-02 17:42:04,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 1 [2023-12-02 17:42:04,144 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) (not (= c_~F~0.base |c_ULTIMATE.start_main_~#t1~0#1.base|)) (forall ((v_ArrVal_4814 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4814) c_~B~0.base) c_~B~0.offset) |c_ULTIMATE.start_main_~#t1~0#1.base|)))) is different from false [2023-12-02 17:42:04,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:04,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-12-02 17:42:04,403 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:04,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:04,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2023-12-02 17:42:04,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-02 17:42:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:42:06,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:42:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515398834] [2023-12-02 17:42:06,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:42:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871519029] [2023-12-02 17:42:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871519029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:42:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927070656] [2023-12-02 17:42:06,507 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:42:06,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:42:06,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-02 17:42:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015298064] [2023-12-02 17:42:06,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:42:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 17:42:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:42:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 17:42:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2125, Unknown=112, NotChecked=294, Total=2756 [2023-12-02 17:42:06,510 INFO L87 Difference]: Start difference. First operand 234746 states and 716490 transitions. Second operand has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:42:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:42:22,067 INFO L93 Difference]: Finished difference Result 272325 states and 812846 transitions. [2023-12-02 17:42:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 17:42:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:42:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:42:22,882 INFO L225 Difference]: With dead ends: 272325 [2023-12-02 17:42:22,882 INFO L226 Difference]: Without dead ends: 272325 [2023-12-02 17:42:22,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 553 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=979, Invalid=6361, Unknown=154, NotChecked=516, Total=8010 [2023-12-02 17:42:22,884 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2961 mSDsluCounter, 15416 mSDsCounter, 0 mSdLazyCounter, 7555 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2961 SdHoareTripleChecker+Valid, 16029 SdHoareTripleChecker+Invalid, 11878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 7555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3947 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:42:22,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2961 Valid, 16029 Invalid, 11878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [376 Valid, 7555 Invalid, 0 Unknown, 3947 Unchecked, 10.3s Time] [2023-12-02 17:42:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272325 states. [2023-12-02 17:42:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272325 to 234986. [2023-12-02 17:42:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234986 states, 234962 states have (on average 3.052621274929563) internal successors, (717250), 234985 states have internal predecessors, (717250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:42:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234986 states to 234986 states and 717250 transitions. [2023-12-02 17:42:28,870 INFO L78 Accepts]: Start accepts. Automaton has 234986 states and 717250 transitions. Word has length 303 [2023-12-02 17:42:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:42:28,870 INFO L495 AbstractCegarLoop]: Abstraction has 234986 states and 717250 transitions. [2023-12-02 17:42:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:42:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 234986 states and 717250 transitions. [2023-12-02 17:42:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:42:28,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:42:28,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:42:28,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-02 17:42:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:42:29,110 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:42:29,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:42:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1992378397, now seen corresponding path program 5 times [2023-12-02 17:42:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:42:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843944722] [2023-12-02 17:42:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:42:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:42:29,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:42:29,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935404868] [2023-12-02 17:42:29,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:42:29,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:42:29,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:42:29,135 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:42:29,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-02 17:42:29,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 17:42:29,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:42:29,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 17:42:29,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:42:32,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:42:32,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:32,709 INFO L378 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 27 treesize of output 20 [2023-12-02 17:42:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:32,831 INFO L378 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 27 treesize of output 20 [2023-12-02 17:42:32,941 INFO L378 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 [2023-12-02 17:42:33,012 INFO L378 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 [2023-12-02 17:42:33,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:42:33,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:42:33,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,615 INFO L378 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 30 treesize of output 21 [2023-12-02 17:42:33,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,643 INFO L378 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 30 treesize of output 21 [2023-12-02 17:42:33,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,670 INFO L378 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 30 treesize of output 21 [2023-12-02 17:42:33,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,696 INFO L378 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 30 treesize of output 21 [2023-12-02 17:42:33,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:42:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,927 INFO L378 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 37 treesize of output 26 [2023-12-02 17:42:33,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,959 INFO L378 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 37 treesize of output 26 [2023-12-02 17:42:33,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:33,983 INFO L378 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 37 treesize of output 26 [2023-12-02 17:42:34,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:34,008 INFO L378 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 37 treesize of output 26 [2023-12-02 17:42:34,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:42:34,123 INFO L378 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 37 treesize of output 26 [2023-12-02 17:42:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:42:34,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:42:34,243 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5069 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5069 (Array Int Int))) (= 0 (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)))) (forall ((v_ArrVal_5069 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5069 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0))) is different from false [2023-12-02 17:42:34,534 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0))))) is different from false [2023-12-02 17:42:34,593 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse2 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) is different from false [2023-12-02 17:42:34,682 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|))))) is different from false [2023-12-02 17:42:35,012 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset)) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse2 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_5063))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))))) is different from false [2023-12-02 17:42:35,078 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset)) (.cse1 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0))))))) is different from false [2023-12-02 17:42:35,129 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) (.cse4 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset)) (.cse1 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0) .cse4 0))) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_37| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_37|) (forall ((v_ArrVal_5068 (Array Int Int)) (v_ArrVal_5069 (Array Int Int)) (v_ArrVal_5063 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse1 c_~B~0.base v_ArrVal_5063) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)) c_~F~0.base v_ArrVal_5068) |v_thread2Thread1of1ForFork1_#t~mem6.base_37| v_ArrVal_5069) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4) 0))))))) is different from false [2023-12-02 17:42:35,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:35,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 91 [2023-12-02 17:42:35,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 55 [2023-12-02 17:42:35,169 INFO L378 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 34 treesize of output 30 [2023-12-02 17:42:35,173 INFO L378 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 59 treesize of output 51 [2023-12-02 17:42:35,178 INFO L378 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 24 treesize of output 20 [2023-12-02 17:42:35,226 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,226 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,227 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,232 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-02 17:42:35,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2023-12-02 17:42:35,235 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,235 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,236 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,240 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-02 17:42:35,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2023-12-02 17:42:35,242 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:35,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-12-02 17:42:35,604 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:42:35,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:42:35,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2023-12-02 17:42:35,624 INFO L378 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 7 treesize of output 5 [2023-12-02 17:42:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:42:37,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:42:37,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843944722] [2023-12-02 17:42:37,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:42:37,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935404868] [2023-12-02 17:42:37,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935404868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:42:37,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1424595591] [2023-12-02 17:42:37,642 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:42:37,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:42:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-02 17:42:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311249602] [2023-12-02 17:42:37,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:42:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 17:42:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:42:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 17:42:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1868, Unknown=27, NotChecked=658, Total=2756 [2023-12-02 17:42:37,646 INFO L87 Difference]: Start difference. First operand 234986 states and 717250 transitions. Second operand has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:42:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:42:51,056 INFO L93 Difference]: Finished difference Result 275583 states and 823687 transitions. [2023-12-02 17:42:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 17:42:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:42:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:42:51,943 INFO L225 Difference]: With dead ends: 275583 [2023-12-02 17:42:51,943 INFO L226 Difference]: Without dead ends: 275583 [2023-12-02 17:42:51,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 553 SyntacticMatches, 8 SemanticMatches, 90 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1004, Invalid=6136, Unknown=28, NotChecked=1204, Total=8372 [2023-12-02 17:42:51,944 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 2863 mSDsluCounter, 14763 mSDsCounter, 0 mSdLazyCounter, 7253 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 15392 SdHoareTripleChecker+Invalid, 17137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 7253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9587 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:42:51,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 15392 Invalid, 17137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [297 Valid, 7253 Invalid, 0 Unknown, 9587 Unchecked, 8.1s Time] [2023-12-02 17:42:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275583 states. [2023-12-02 17:42:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275583 to 234786. [2023-12-02 17:42:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234786 states, 234762 states have (on average 3.052495719068674) internal successors, (716610), 234785 states have internal predecessors, (716610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:42:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234786 states to 234786 states and 716610 transitions. [2023-12-02 17:42:58,363 INFO L78 Accepts]: Start accepts. Automaton has 234786 states and 716610 transitions. Word has length 303 [2023-12-02 17:42:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:42:58,363 INFO L495 AbstractCegarLoop]: Abstraction has 234786 states and 716610 transitions. [2023-12-02 17:42:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:42:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 234786 states and 716610 transitions. [2023-12-02 17:42:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:42:58,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:42:58,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:42:58,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-02 17:42:58,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:42:58,614 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:42:58,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:42:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1257038597, now seen corresponding path program 6 times [2023-12-02 17:42:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:42:58,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524153617] [2023-12-02 17:42:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:42:58,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:42:58,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:42:58,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252368819] [2023-12-02 17:42:58,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:42:58,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:42:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:42:58,647 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:42:58,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-02 17:43:00,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:43:00,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:43:00,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-02 17:43:00,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:03,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:43:04,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:04,383 INFO L378 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 27 treesize of output 20 [2023-12-02 17:43:04,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:04,510 INFO L378 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 27 treesize of output 20 [2023-12-02 17:43:04,635 INFO L378 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 [2023-12-02 17:43:04,713 INFO L378 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 [2023-12-02 17:43:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:43:04,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:43:05,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:43:05,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,399 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,428 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,459 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,487 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,665 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,690 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,711 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,732 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:05,841 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:43:05,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:43:05,971 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5310 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_5310 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5310 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5310 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0))) is different from false [2023-12-02 17:43:06,261 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0))) is different from false [2023-12-02 17:43:06,343 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store |c_#race| c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)))))) is different from false [2023-12-02 17:43:06,715 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset))) (.cse1 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0)))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0))))))) is different from false [2023-12-02 17:43:06,780 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse1 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0) .cse3 0))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset)))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse1 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|)))))) is different from false [2023-12-02 17:43:06,835 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset)) (.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0) .cse2 0)))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (< .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (< .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_39| Int)) (or (< .cse1 |v_thread2Thread1of1ForFork1_#t~mem6.base_39|) (forall ((v_ArrVal_5310 (Array Int Int)) (v_ArrVal_5305 (Array Int Int)) (v_ArrVal_5309 (Array Int Int))) (= (select (select (store (store (store .cse0 c_~B~0.base v_ArrVal_5305) c_~F~0.base v_ArrVal_5309) |v_thread2Thread1of1ForFork1_#t~mem6.base_39| v_ArrVal_5310) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0))))))) is different from false [2023-12-02 17:43:07,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:07,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 57 [2023-12-02 17:43:07,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:07,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 138 [2023-12-02 17:43:07,186 INFO L378 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 114 treesize of output 98 [2023-12-02 17:43:07,190 INFO L378 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 98 treesize of output 90 [2023-12-02 17:43:07,196 INFO L378 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 50 treesize of output 46 [2023-12-02 17:43:07,305 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-02 17:43:07,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 17:43:07,312 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-02 17:43:07,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2023-12-02 17:43:07,320 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-02 17:43:07,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 1 [2023-12-02 17:43:07,432 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) (not (= c_~F~0.base |c_ULTIMATE.start_main_~#t1~0#1.base|)) (forall ((v_ArrVal_5296 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5296) c_~B~0.base) c_~B~0.offset) 1) |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2023-12-02 17:43:07,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:07,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-12-02 17:43:07,710 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:07,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:07,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2023-12-02 17:43:07,729 INFO L378 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 7 treesize of output 5 [2023-12-02 17:43:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:43:09,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:43:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524153617] [2023-12-02 17:43:09,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:43:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252368819] [2023-12-02 17:43:09,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252368819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:43:09,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054132205] [2023-12-02 17:43:09,700 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:43:09,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:43:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-02 17:43:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007133904] [2023-12-02 17:43:09,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:43:09,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 17:43:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:09,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 17:43:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1855, Unknown=26, NotChecked=658, Total=2756 [2023-12-02 17:43:09,703 INFO L87 Difference]: Start difference. First operand 234786 states and 716610 transitions. Second operand has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:43:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:22,325 INFO L93 Difference]: Finished difference Result 276787 states and 826535 transitions. [2023-12-02 17:43:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 17:43:22,326 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:43:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:23,171 INFO L225 Difference]: With dead ends: 276787 [2023-12-02 17:43:23,171 INFO L226 Difference]: Without dead ends: 276787 [2023-12-02 17:43:23,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 553 SyntacticMatches, 8 SemanticMatches, 88 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=957, Invalid=5851, Unknown=26, NotChecked=1176, Total=8010 [2023-12-02 17:43:23,173 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 5191 mSDsluCounter, 11767 mSDsCounter, 0 mSdLazyCounter, 5917 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5191 SdHoareTripleChecker+Valid, 12352 SdHoareTripleChecker+Invalid, 15408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9208 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:23,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5191 Valid, 12352 Invalid, 15408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5917 Invalid, 0 Unknown, 9208 Unchecked, 7.3s Time] [2023-12-02 17:43:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276787 states. [2023-12-02 17:43:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276787 to 235186. [2023-12-02 17:43:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235186 states, 235162 states have (on average 3.052746617225572) internal successors, (717890), 235185 states have internal predecessors, (717890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:43:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235186 states to 235186 states and 717890 transitions. [2023-12-02 17:43:29,108 INFO L78 Accepts]: Start accepts. Automaton has 235186 states and 717890 transitions. Word has length 303 [2023-12-02 17:43:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:29,109 INFO L495 AbstractCegarLoop]: Abstraction has 235186 states and 717890 transitions. [2023-12-02 17:43:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:43:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 235186 states and 717890 transitions. [2023-12-02 17:43:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:43:29,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:29,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:43:29,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-12-02 17:43:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-02 17:43:29,764 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:43:29,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 299405955, now seen corresponding path program 7 times [2023-12-02 17:43:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321005387] [2023-12-02 17:43:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:29,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634625807] [2023-12-02 17:43:29,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 17:43:29,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:29,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:29,799 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:29,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-02 17:43:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:43:30,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-02 17:43:30,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:32,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:43:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:33,375 INFO L378 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 27 treesize of output 20 [2023-12-02 17:43:33,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:33,509 INFO L378 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 27 treesize of output 20 [2023-12-02 17:43:33,627 INFO L378 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 [2023-12-02 17:43:33,695 INFO L378 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 [2023-12-02 17:43:33,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:43:34,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:43:34,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,269 INFO L378 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 30 treesize of output 21 [2023-12-02 17:43:34,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,296 INFO L378 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 30 treesize of output 21 [2023-12-02 17:43:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,324 INFO L378 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 30 treesize of output 21 [2023-12-02 17:43:34,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,352 INFO L378 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 30 treesize of output 21 [2023-12-02 17:43:34,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:43:34,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,614 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,638 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:34,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,665 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:34,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,691 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:34,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:43:34,812 INFO L378 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 37 treesize of output 26 [2023-12-02 17:43:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:43:34,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:43:34,931 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5551 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_5551 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5551 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5551 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0))) is different from false [2023-12-02 17:43:35,354 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse2 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) is different from false [2023-12-02 17:43:35,412 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset))) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_5545))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0))) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)))) is different from false [2023-12-02 17:43:35,558 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ (* c_thread2Thread1of1ForFork1_~i~1 4) c_~B~0.offset))) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0))))) is different from false [2023-12-02 17:43:35,580 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset))) (and (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0))))) is different from false [2023-12-02 17:43:35,605 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4 0) .cse3 0))) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse2 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset))) (and (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (forall ((v_ArrVal_5550 (Array Int Int)) (v_ArrVal_5551 (Array Int Int)) (v_ArrVal_5545 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select (store .cse0 c_~B~0.base v_ArrVal_5545) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)) c_~F~0.base v_ArrVal_5550) .cse2 v_ArrVal_5551) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse4) 0))))) is different from false [2023-12-02 17:43:35,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:35,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 107 [2023-12-02 17:43:35,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 63 [2023-12-02 17:43:35,630 INFO L378 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 79 treesize of output 71 [2023-12-02 17:43:35,635 INFO L378 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 32 treesize of output 28 [2023-12-02 17:43:35,639 INFO L378 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 38 treesize of output 34 [2023-12-02 17:43:35,664 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,665 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,665 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,668 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,668 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,673 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-02 17:43:35,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2023-12-02 17:43:35,675 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,675 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,676 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:35,680 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-02 17:43:35,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2023-12-02 17:43:36,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:36,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-12-02 17:43:36,102 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:43:36,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:43:36,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2023-12-02 17:43:36,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-12-02 17:43:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:43:38,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:43:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321005387] [2023-12-02 17:43:38,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:43:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634625807] [2023-12-02 17:43:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634625807] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:43:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [765400559] [2023-12-02 17:43:38,025 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:43:38,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:43:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-02 17:43:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053471573] [2023-12-02 17:43:38,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:43:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 17:43:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 17:43:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1958, Unknown=23, NotChecked=570, Total=2756 [2023-12-02 17:43:38,028 INFO L87 Difference]: Start difference. First operand 235186 states and 717890 transitions. Second operand has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:43:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:51,265 INFO L93 Difference]: Finished difference Result 281958 states and 842435 transitions. [2023-12-02 17:43:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 17:43:51,266 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:43:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:52,440 INFO L225 Difference]: With dead ends: 281958 [2023-12-02 17:43:52,440 INFO L226 Difference]: Without dead ends: 281958 [2023-12-02 17:43:52,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 553 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1008, Invalid=6303, Unknown=23, NotChecked=1038, Total=8372 [2023-12-02 17:43:52,441 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 2951 mSDsluCounter, 12698 mSDsCounter, 0 mSdLazyCounter, 6379 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2951 SdHoareTripleChecker+Valid, 13299 SdHoareTripleChecker+Invalid, 15054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 6379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8404 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:52,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2951 Valid, 13299 Invalid, 15054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [271 Valid, 6379 Invalid, 0 Unknown, 8404 Unchecked, 8.1s Time] [2023-12-02 17:43:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281958 states. [2023-12-02 17:43:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281958 to 234986. [2023-12-02 17:43:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234986 states, 234962 states have (on average 3.052621274929563) internal successors, (717250), 234985 states have internal predecessors, (717250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:43:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234986 states to 234986 states and 717250 transitions. [2023-12-02 17:43:58,513 INFO L78 Accepts]: Start accepts. Automaton has 234986 states and 717250 transitions. Word has length 303 [2023-12-02 17:43:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:58,514 INFO L495 AbstractCegarLoop]: Abstraction has 234986 states and 717250 transitions. [2023-12-02 17:43:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:43:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 234986 states and 717250 transitions. [2023-12-02 17:43:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:43:58,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:58,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:43:58,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-02 17:43:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:58,755 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:43:58,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash -881331225, now seen corresponding path program 8 times [2023-12-02 17:43:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095098893] [2023-12-02 17:43:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:58,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:58,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083444875] [2023-12-02 17:43:58,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:43:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:58,783 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-02 17:43:59,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 17:43:59,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:43:59,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 17:43:59,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:44:02,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:44:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:03,228 INFO L378 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 27 treesize of output 20 [2023-12-02 17:44:03,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:03,369 INFO L378 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 27 treesize of output 20 [2023-12-02 17:44:03,479 INFO L378 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 [2023-12-02 17:44:03,543 INFO L378 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 [2023-12-02 17:44:03,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:44:03,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:03,971 INFO L378 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 23 treesize of output 16 [2023-12-02 17:44:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:03,991 INFO L378 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 23 treesize of output 16 [2023-12-02 17:44:04,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,015 INFO L378 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 23 treesize of output 16 [2023-12-02 17:44:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,035 INFO L378 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 23 treesize of output 16 [2023-12-02 17:44:04,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:44:04,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:44:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,332 INFO L378 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 37 treesize of output 26 [2023-12-02 17:44:04,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,358 INFO L378 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 37 treesize of output 26 [2023-12-02 17:44:04,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,381 INFO L378 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 37 treesize of output 26 [2023-12-02 17:44:04,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,406 INFO L378 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 37 treesize of output 26 [2023-12-02 17:44:04,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:04,523 INFO L378 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 37 treesize of output 26 [2023-12-02 17:44:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:44:04,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:44:04,662 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5792 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0)) (forall ((v_ArrVal_5792 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5792 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) 0)) (forall ((v_ArrVal_5792 (Array Int Int))) (= (select (select (store |c_#race| |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0))) is different from false [2023-12-02 17:44:04,956 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) 0))))) is different from false [2023-12-02 17:44:04,992 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0) .cse1 0)))) (and (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int))) (= (select (select (store (store .cse0 c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0))))) is different from false [2023-12-02 17:44:05,045 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse0 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse3 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0))) c_~F~0.base v_ArrVal_5791) |c_thread2Thread1of1ForFork1_#t~mem6.base| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) is different from false [2023-12-02 17:44:05,926 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3)) (.cse0 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse1 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse1 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0) .cse3 0))) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1)) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= 0 (select (select (store (store (let ((.cse4 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0) .cse3 0))) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2))) (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse5 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0) .cse3 0))) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (let ((.cse6 (store |c_#race| c_~B~0.base v_ArrVal_5785))) (store .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select .cse6 |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2 0) .cse3 0))) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (< .cse0 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|))))) is different from false [2023-12-02 17:44:05,986 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 1))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset)) (.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3 0))) (.cse1 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 2)) (.cse2 (+ |c_ULTIMATE.start_main_~#t1~0#1.offset| 3))) (and (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse3) 0)) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1) 0)) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) |c_ULTIMATE.start_main_~#t1~0#1.offset|) 0)) (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|))) (forall ((|v_thread2Thread1of1ForFork1_#t~mem6.base_43| Int)) (or (< .cse4 |v_thread2Thread1of1ForFork1_#t~mem6.base_43|) (forall ((v_ArrVal_5792 (Array Int Int)) (v_ArrVal_5791 (Array Int Int)) (v_ArrVal_5785 (Array Int Int))) (= (select (select (store (store (store (store |c_#race| c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base| (store (store (select (store .cse0 c_~B~0.base v_ArrVal_5785) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse1 0) .cse2 0)) c_~F~0.base v_ArrVal_5791) |v_thread2Thread1of1ForFork1_#t~mem6.base_43| v_ArrVal_5792) |c_ULTIMATE.start_main_~#t1~0#1.base|) .cse2) 0))))))) is different from false [2023-12-02 17:44:06,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:44:06,008 INFO L378 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 2 case distinctions, treesize of input 76 treesize of output 81 [2023-12-02 17:44:06,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2023-12-02 17:44:06,023 INFO L378 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 34 treesize of output 30 [2023-12-02 17:44:06,027 INFO L378 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 59 treesize of output 51 [2023-12-02 17:44:06,032 INFO L378 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 24 treesize of output 20 [2023-12-02 17:44:06,077 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,081 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,081 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,082 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,087 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-12-02 17:44:06,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 17:44:06,089 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,090 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,091 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,205 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) (not (= c_~F~0.base |c_ULTIMATE.start_main_~#t1~0#1.base|)) (forall ((v_ArrVal_5778 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5778) c_~B~0.base) c_~B~0.offset) 1) |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2023-12-02 17:44:06,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:44:06,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-12-02 17:44:06,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:44:06,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:44:06,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2023-12-02 17:44:06,478 INFO L378 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 7 treesize of output 5 [2023-12-02 17:44:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:44:08,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:44:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095098893] [2023-12-02 17:44:08,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:44:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083444875] [2023-12-02 17:44:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083444875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:44:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [701650461] [2023-12-02 17:44:08,623 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2023-12-02 17:44:08,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:44:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 52 [2023-12-02 17:44:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813452700] [2023-12-02 17:44:08,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:44:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-02 17:44:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:44:08,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-02 17:44:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1878, Unknown=21, NotChecked=658, Total=2756 [2023-12-02 17:44:08,626 INFO L87 Difference]: Start difference. First operand 234986 states and 717250 transitions. Second operand has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:44:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:44:23,505 INFO L93 Difference]: Finished difference Result 274717 states and 820933 transitions. [2023-12-02 17:44:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 17:44:23,506 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 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 303 [2023-12-02 17:44:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:44:24,373 INFO L225 Difference]: With dead ends: 274717 [2023-12-02 17:44:24,373 INFO L226 Difference]: Without dead ends: 274717 [2023-12-02 17:44:24,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 553 SyntacticMatches, 9 SemanticMatches, 91 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1009, Invalid=6308, Unknown=21, NotChecked=1218, Total=8556 [2023-12-02 17:44:24,374 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 4987 mSDsluCounter, 13826 mSDsCounter, 0 mSdLazyCounter, 7089 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4987 SdHoareTripleChecker+Valid, 14433 SdHoareTripleChecker+Invalid, 17271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 7089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9816 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:44:24,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4987 Valid, 14433 Invalid, 17271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [366 Valid, 7089 Invalid, 0 Unknown, 9816 Unchecked, 9.3s Time] [2023-12-02 17:44:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274717 states. [2023-12-02 17:44:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274717 to 234786. [2023-12-02 17:44:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234786 states, 234762 states have (on average 3.052495719068674) internal successors, (716610), 234785 states have internal predecessors, (716610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:44:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234786 states to 234786 states and 716610 transitions. [2023-12-02 17:44:30,519 INFO L78 Accepts]: Start accepts. Automaton has 234786 states and 716610 transitions. Word has length 303 [2023-12-02 17:44:30,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:44:30,519 INFO L495 AbstractCegarLoop]: Abstraction has 234786 states and 716610 transitions. [2023-12-02 17:44:30,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 11.346153846153847) internal successors, (590), 53 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:44:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 234786 states and 716610 transitions. [2023-12-02 17:44:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-02 17:44:30,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:44:30,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:44:30,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-02 17:44:30,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:44:30,763 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-12-02 17:44:30,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:44:30,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1672541991, now seen corresponding path program 9 times [2023-12-02 17:44:30,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:44:30,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600679946] [2023-12-02 17:44:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:44:30,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:44:30,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:44:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446439708] [2023-12-02 17:44:30,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:44:30,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:44:30,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:44:30,791 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:44:30,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2d3893-600e-4089-8a9b-1ade22cbb70d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-02 17:44:32,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:44:32,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:44:32,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-02 17:44:32,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:44:35,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 17:44:35,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:35,512 INFO L378 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 27 treesize of output 20 [2023-12-02 17:44:35,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:35,604 INFO L378 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 27 treesize of output 20 [2023-12-02 17:44:35,678 INFO L378 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 [2023-12-02 17:44:35,774 INFO L378 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 [2023-12-02 17:44:35,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 17:44:35,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 17:44:36,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 17:44:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:36,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-12-02 17:44:36,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:36,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 51 [2023-12-02 17:44:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:36,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 51 [2023-12-02 17:44:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:36,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2023-12-02 17:44:37,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:37,129 INFO L349 Elim1Store]: treesize reduction 256, result has 18.2 percent of original size [2023-12-02 17:44:37,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 72 treesize of output 92 [2023-12-02 17:44:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 17:44:37,580 INFO L349 Elim1Store]: treesize reduction 362, result has 30.0 percent of original size [2023-12-02 17:44:37,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 93 treesize of output 193 [2023-12-02 17:44:38,318 INFO L349 Elim1Store]: treesize reduction 538, result has 25.4 percent of original size [2023-12-02 17:44:38,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 6 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 84 case distinctions, treesize of input 256 treesize of output 369 [2023-12-02 17:44:40,426 INFO L349 Elim1Store]: treesize reduction 1033, result has 20.4 percent of original size [2023-12-02 17:44:40,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 6 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 163 case distinctions, treesize of input 292 treesize of output 481 [2023-12-02 17:45:28,072 INFO L190 IndexEqualityManager]: detected not equals via solver