./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:16,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:17,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:17:17,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:17,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:17,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:17,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:17,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:17,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:17,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:17,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:17,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:17,167 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:17,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:17,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:17,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:17,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:17,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:17,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:17,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:17,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:17,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:17,179 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:17:17,179 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:17:17,180 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:17,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:17,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:17,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:17,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:17,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:17,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:17,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:17,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:17,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:17,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:17,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:17,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:17,193 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:17,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:17,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:17,194 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:17,195 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-12 02:17:17,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:17,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:17,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:17,589 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:17,590 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:17,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-12 02:17:20,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:20,976 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:20,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-12 02:17:20,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/data/5a16a540e/ef49ce6ae3c44870b50c7bdc81deeb84/FLAG2a839deb9 [2023-11-12 02:17:21,002 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/data/5a16a540e/ef49ce6ae3c44870b50c7bdc81deeb84 [2023-11-12 02:17:21,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:21,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:21,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:21,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:21,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:21,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a0b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21, skipping insertion in model container [2023-11-12 02:17:21,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:21,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:21,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:21,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:21,443 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:21,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21 WrapperNode [2023-11-12 02:17:21,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:21,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:21,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:21,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:21,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,522 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 353 [2023-11-12 02:17:21,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:21,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:21,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:21,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:21,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:21,631 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:21,631 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:21,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:21,632 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (1/1) ... [2023-11-12 02:17:21,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:21,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:21,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:17:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:17:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:17:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:17:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:17:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:17:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:17:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:21,770 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:17:21,963 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:21,966 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:23,089 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:23,115 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:23,115 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:17:23,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:23 BoogieIcfgContainer [2023-11-12 02:17:23,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:23,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:23,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:23,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:23,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:21" (1/3) ... [2023-11-12 02:17:23,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf03e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:23, skipping insertion in model container [2023-11-12 02:17:23,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:21" (2/3) ... [2023-11-12 02:17:23,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf03e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:23, skipping insertion in model container [2023-11-12 02:17:23,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:23" (3/3) ... [2023-11-12 02:17:23,134 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-12 02:17:23,144 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:23,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:23,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-11-12 02:17:23,158 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:23,310 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:17:23,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 554 transitions, 1122 flow [2023-11-12 02:17:23,639 INFO L124 PetriNetUnfolderBase]: 30/552 cut-off events. [2023-11-12 02:17:23,639 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:17:23,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 552 events. 30/552 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 854 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 350. Up to 2 conditions per place. [2023-11-12 02:17:23,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 554 transitions, 1122 flow [2023-11-12 02:17:23,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 528 transitions, 1068 flow [2023-11-12 02:17:23,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:23,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 506 places, 528 transitions, 1068 flow [2023-11-12 02:17:23,686 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 506 places, 528 transitions, 1068 flow [2023-11-12 02:17:23,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 528 transitions, 1068 flow [2023-11-12 02:17:23,812 INFO L124 PetriNetUnfolderBase]: 29/528 cut-off events. [2023-11-12 02:17:23,812 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:17:23,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 528 events. 29/528 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 851 event pairs, 0 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 350. Up to 2 conditions per place. [2023-11-12 02:17:23,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2023-11-12 02:17:56,898 WARN L293 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:18:06,162 WARN L293 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 170 DAG size of output: 160 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:18:10,803 INFO L134 LiptonReduction]: Checked pairs total: 50447 [2023-11-12 02:18:10,803 INFO L136 LiptonReduction]: Total number of compositions: 643 [2023-11-12 02:18:10,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:10,826 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=PETRI_NET, 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;@1e7a8eb9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:10,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-12 02:18:10,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:10,829 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:18:10,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:10,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:10,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:18:10,832 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)] === [2023-11-12 02:18:10,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2023-11-12 02:18:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:10,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730738636] [2023-11-12 02:18:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:10,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:10,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730738636] [2023-11-12 02:18:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730738636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:10,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:10,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:18:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899755781] [2023-11-12 02:18:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:11,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 1197 [2023-11-12 02:18:11,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 258 flow. Second operand has 2 states, 2 states have (on average 530.5) internal successors, (1061), 2 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:11,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 1197 [2023-11-12 02:18:11,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:11,286 INFO L124 PetriNetUnfolderBase]: 146/580 cut-off events. [2023-11-12 02:18:11,289 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-12 02:18:11,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 580 events. 146/580 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3248 event pairs, 102 based on Foata normal form. 12/484 useless extension candidates. Maximal degree in co-relation 692. Up to 247 conditions per place. [2023-11-12 02:18:11,296 INFO L140 encePairwiseOnDemand]: 1149/1197 looper letters, 28 selfloop transitions, 0 changer transitions 1/75 dead transitions. [2023-11-12 02:18:11,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 220 flow [2023-11-12 02:18:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:18:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1137 transitions. [2023-11-12 02:18:11,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474937343358396 [2023-11-12 02:18:11,326 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1137 transitions. [2023-11-12 02:18:11,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1137 transitions. [2023-11-12 02:18:11,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:11,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1137 transitions. [2023-11-12 02:18:11,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 568.5) internal successors, (1137), 2 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1197.0) internal successors, (3591), 3 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,359 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1197.0) internal successors, (3591), 3 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,361 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 258 flow. Second operand 2 states and 1137 transitions. [2023-11-12 02:18:11,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 220 flow [2023-11-12 02:18:11,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:11,370 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 151 flow [2023-11-12 02:18:11,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=151, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-11-12 02:18:11,377 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -51 predicate places. [2023-11-12 02:18:11,378 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 151 flow [2023-11-12 02:18:11,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 530.5) internal successors, (1061), 2 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:11,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:11,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-12 02:18:11,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:11,381 INFO L85 PathProgramCache]: Analyzing trace with hash -912961904, now seen corresponding path program 1 times [2023-11-12 02:18:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:11,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989289182] [2023-11-12 02:18:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:11,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:11,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:18:11,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747913400] [2023-11-12 02:18:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:11,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:11,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:11,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:18:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:11,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:18:11,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:11,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989289182] [2023-11-12 02:18:11,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:18:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747913400] [2023-11-12 02:18:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747913400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718934394] [2023-11-12 02:18:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:11,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 1197 [2023-11-12 02:18:11,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 525.6666666666666) internal successors, (1577), 3 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:11,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 1197 [2023-11-12 02:18:11,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:11,881 INFO L124 PetriNetUnfolderBase]: 255/894 cut-off events. [2023-11-12 02:18:11,881 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-12 02:18:11,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 894 events. 255/894 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5496 event pairs, 54 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 1329. Up to 321 conditions per place. [2023-11-12 02:18:11,889 INFO L140 encePairwiseOnDemand]: 1193/1197 looper letters, 42 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-12 02:18:11,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 265 flow [2023-11-12 02:18:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1615 transitions. [2023-11-12 02:18:11,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2023-11-12 02:18:11,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1615 transitions. [2023-11-12 02:18:11,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1615 transitions. [2023-11-12 02:18:11,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:11,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1615 transitions. [2023-11-12 02:18:11,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 538.3333333333334) internal successors, (1615), 3 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1197.0) internal successors, (4788), 4 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1197.0) internal successors, (4788), 4 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,921 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 151 flow. Second operand 3 states and 1615 transitions. [2023-11-12 02:18:11,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 265 flow [2023-11-12 02:18:11,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:11,925 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 161 flow [2023-11-12 02:18:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-11-12 02:18:11,927 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -51 predicate places. [2023-11-12 02:18:11,927 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 161 flow [2023-11-12 02:18:11,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 525.6666666666666) internal successors, (1577), 3 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:11,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:11,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:12,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:12,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-12 02:18:12,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash -269487440, now seen corresponding path program 1 times [2023-11-12 02:18:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349318678] [2023-11-12 02:18:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:12,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:18:12,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658203585] [2023-11-12 02:18:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:12,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:12,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:12,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:12,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:18:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:12,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:18:12,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:12,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:18:12,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-12 02:18:12,483 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:18:12,484 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-12 02:18:12,528 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:18:12,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-12 02:18:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:12,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:12,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349318678] [2023-11-12 02:18:12,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:18:12,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658203585] [2023-11-12 02:18:12,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658203585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:12,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:12,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528437049] [2023-11-12 02:18:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:13,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1197 [2023-11-12 02:18:13,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 497.85714285714283) internal successors, (3485), 7 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:13,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:13,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1197 [2023-11-12 02:18:13,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:14,314 INFO L124 PetriNetUnfolderBase]: 2330/4521 cut-off events. [2023-11-12 02:18:14,314 INFO L125 PetriNetUnfolderBase]: For 146/254 co-relation queries the response was YES. [2023-11-12 02:18:14,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8349 conditions, 4521 events. 2330/4521 cut-off events. For 146/254 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 29581 event pairs, 636 based on Foata normal form. 2/3931 useless extension candidates. Maximal degree in co-relation 8345. Up to 2293 conditions per place. [2023-11-12 02:18:14,355 INFO L140 encePairwiseOnDemand]: 1182/1197 looper letters, 89 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2023-11-12 02:18:14,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 160 transitions, 608 flow [2023-11-12 02:18:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3595 transitions. [2023-11-12 02:18:14,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42904881250745913 [2023-11-12 02:18:14,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3595 transitions. [2023-11-12 02:18:14,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3595 transitions. [2023-11-12 02:18:14,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:14,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3595 transitions. [2023-11-12 02:18:14,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 513.5714285714286) internal successors, (3595), 7 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1197.0) internal successors, (9576), 8 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1197.0) internal successors, (9576), 8 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,477 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 161 flow. Second operand 7 states and 3595 transitions. [2023-11-12 02:18:14,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 160 transitions, 608 flow [2023-11-12 02:18:14,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 160 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:14,485 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 410 flow [2023-11-12 02:18:14,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2023-11-12 02:18:14,487 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -40 predicate places. [2023-11-12 02:18:14,487 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 410 flow [2023-11-12 02:18:14,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 497.85714285714283) internal successors, (3485), 7 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:14,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:14,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:14,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:14,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-12 02:18:14,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1166716948, now seen corresponding path program 1 times [2023-11-12 02:18:14,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:14,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857617237] [2023-11-12 02:18:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:14,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:14,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:18:14,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853716517] [2023-11-12 02:18:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:14,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:14,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:14,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:18:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:14,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:18:14,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:14,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:14,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857617237] [2023-11-12 02:18:14,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:18:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853716517] [2023-11-12 02:18:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853716517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790275033] [2023-11-12 02:18:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:14,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:15,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 506 out of 1197 [2023-11-12 02:18:15,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 507.4) internal successors, (2537), 5 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:15,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:15,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 506 of 1197 [2023-11-12 02:18:15,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:16,029 INFO L124 PetriNetUnfolderBase]: 1339/4317 cut-off events. [2023-11-12 02:18:16,029 INFO L125 PetriNetUnfolderBase]: For 1063/1264 co-relation queries the response was YES. [2023-11-12 02:18:16,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8019 conditions, 4317 events. 1339/4317 cut-off events. For 1063/1264 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 37067 event pairs, 454 based on Foata normal form. 68/3798 useless extension candidates. Maximal degree in co-relation 8009. Up to 1103 conditions per place. [2023-11-12 02:18:16,083 INFO L140 encePairwiseOnDemand]: 1186/1197 looper letters, 73 selfloop transitions, 13 changer transitions 0/159 dead transitions. [2023-11-12 02:18:16,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 720 flow [2023-11-12 02:18:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3106 transitions. [2023-11-12 02:18:16,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324700640490114 [2023-11-12 02:18:16,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3106 transitions. [2023-11-12 02:18:16,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3106 transitions. [2023-11-12 02:18:16,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:16,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3106 transitions. [2023-11-12 02:18:16,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 517.6666666666666) internal successors, (3106), 6 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1197.0) internal successors, (8379), 7 states have internal predecessors, (8379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1197.0) internal successors, (8379), 7 states have internal predecessors, (8379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,131 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 410 flow. Second operand 6 states and 3106 transitions. [2023-11-12 02:18:16,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 720 flow [2023-11-12 02:18:16,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:16,152 INFO L231 Difference]: Finished difference. Result has 91 places, 121 transitions, 503 flow [2023-11-12 02:18:16,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=121} [2023-11-12 02:18:16,154 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -32 predicate places. [2023-11-12 02:18:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 121 transitions, 503 flow [2023-11-12 02:18:16,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 507.4) internal successors, (2537), 5 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:16,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:16,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:16,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-12 02:18:16,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash -15038628, now seen corresponding path program 1 times [2023-11-12 02:18:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203192] [2023-11-12 02:18:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:16,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:16,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:18:16,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370781184] [2023-11-12 02:18:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:16,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:16,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:16,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:16,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075f4c74-8b6b-40be-8ecd-a16f57d69505/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:18:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:16,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:18:16,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:16,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:16,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:16,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203192] [2023-11-12 02:18:16,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:18:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370781184] [2023-11-12 02:18:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370781184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:16,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:16,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:16,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924977965] [2023-11-12 02:18:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:16,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 1197 [2023-11-12 02:18:16,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 121 transitions, 503 flow. Second operand has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:16,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 1197 [2023-11-12 02:18:16,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand