./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:48:38,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:38,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:48:38,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:38,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:38,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:38,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:38,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:38,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:38,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:38,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:38,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:38,598 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:38,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:38,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:38,601 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:38,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:38,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:38,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:38,602 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:38,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:38,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:38,604 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:48:38,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:38,605 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:38,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:38,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:38,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:38,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:38,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:38,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:38,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:38,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:38,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:38,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:38,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:38,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:38,610 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:38,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:38,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:38,611 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:38,611 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_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-19 07:48:38,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:38,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:38,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:38,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:38,936 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:38,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 07:48:41,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:42,193 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:42,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 07:48:42,206 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/data/d2c75b7a4/2f7e397640c34e33927cacbd30908506/FLAG791ac495b [2023-11-19 07:48:42,225 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/data/d2c75b7a4/2f7e397640c34e33927cacbd30908506 [2023-11-19 07:48:42,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:42,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:42,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:42,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:42,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:42,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c833e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42, skipping insertion in model container [2023-11-19 07:48:42,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:42,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:42,486 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:42,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:42,564 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:42,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42 WrapperNode [2023-11-19 07:48:42,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:42,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:42,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:42,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:42,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,633 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 353 [2023-11-19 07:48:42,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:42,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:42,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:42,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:42,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:42,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:42,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:42,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:42,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (1/1) ... [2023-11-19 07:48:42,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:42,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:42,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:48:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:48:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:48:42,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:48:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:48:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:48:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:48:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:42,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:42,784 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:42,938 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:42,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:43,899 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:43,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:43,922 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 07:48:43,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:43 BoogieIcfgContainer [2023-11-19 07:48:43,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:43,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:43,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:43,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:43,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:42" (1/3) ... [2023-11-19 07:48:43,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62221bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:43, skipping insertion in model container [2023-11-19 07:48:43,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:42" (2/3) ... [2023-11-19 07:48:43,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62221bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:43, skipping insertion in model container [2023-11-19 07:48:43,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:43" (3/3) ... [2023-11-19 07:48:43,944 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-19 07:48:43,953 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:48:43,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:43,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-11-19 07:48:43,963 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:44,088 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:48:44,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 554 transitions, 1122 flow [2023-11-19 07:48:44,387 INFO L124 PetriNetUnfolderBase]: 30/552 cut-off events. [2023-11-19 07:48:44,387 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:44,397 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. [2023-11-19 07:48:44,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 554 transitions, 1122 flow [2023-11-19 07:48:44,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 528 transitions, 1068 flow [2023-11-19 07:48:44,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:44,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 506 places, 528 transitions, 1068 flow [2023-11-19 07:48:44,438 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 506 places, 528 transitions, 1068 flow [2023-11-19 07:48:44,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 528 transitions, 1068 flow [2023-11-19 07:48:44,557 INFO L124 PetriNetUnfolderBase]: 29/528 cut-off events. [2023-11-19 07:48:44,557 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:44,562 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. [2023-11-19 07:48:44,570 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2023-11-19 07:49:14,747 INFO L134 LiptonReduction]: Checked pairs total: 50447 [2023-11-19 07:49:14,748 INFO L136 LiptonReduction]: Total number of compositions: 643 [2023-11-19 07:49:14,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:14,771 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=] [2023-11-19 07:49:14,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-19 07:49:14,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:14,773 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:49:14,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:14,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:14,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:49:14,775 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)] === [2023-11-19 07:49:14,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:14,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2023-11-19 07:49:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:14,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730738636] [2023-11-19 07:49:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:14,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730738636] [2023-11-19 07:49:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730738636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:14,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:49:14,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271649221] [2023-11-19 07:49:14,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:49:14,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:49:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:14,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 1197 [2023-11-19 07:49:14,947 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) [2023-11-19 07:49:14,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:14,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 1197 [2023-11-19 07:49:14,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:15,126 INFO L124 PetriNetUnfolderBase]: 146/580 cut-off events. [2023-11-19 07:49:15,126 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-19 07:49:15,128 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. [2023-11-19 07:49:15,133 INFO L140 encePairwiseOnDemand]: 1149/1197 looper letters, 28 selfloop transitions, 0 changer transitions 1/75 dead transitions. [2023-11-19 07:49:15,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 220 flow [2023-11-19 07:49:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:49:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:49:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1137 transitions. [2023-11-19 07:49:15,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474937343358396 [2023-11-19 07:49:15,164 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1137 transitions. [2023-11-19 07:49:15,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1137 transitions. [2023-11-19 07:49:15,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:15,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1137 transitions. [2023-11-19 07:49:15,180 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) [2023-11-19 07:49:15,194 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) [2023-11-19 07:49:15,197 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) [2023-11-19 07:49:15,199 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 258 flow. Second operand 2 states and 1137 transitions. [2023-11-19 07:49:15,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 220 flow [2023-11-19 07:49:15,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:49:15,207 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 151 flow [2023-11-19 07:49:15,209 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} [2023-11-19 07:49:15,214 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -51 predicate places. [2023-11-19 07:49:15,215 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 151 flow [2023-11-19 07:49:15,216 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) [2023-11-19 07:49:15,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:15,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:15,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:15,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:15,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash -912961904, now seen corresponding path program 1 times [2023-11-19 07:49:15,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:15,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002055236] [2023-11-19 07:49:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:15,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373140886] [2023-11-19 07:49:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:15,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:15,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:15,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:15,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:49:15,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:15,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:15,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002055236] [2023-11-19 07:49:15,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:15,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373140886] [2023-11-19 07:49:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373140886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:15,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:15,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270097367] [2023-11-19 07:49:15,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:15,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:15,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 1197 [2023-11-19 07:49:15,506 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) [2023-11-19 07:49:15,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:15,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 1197 [2023-11-19 07:49:15,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:15,782 INFO L124 PetriNetUnfolderBase]: 255/894 cut-off events. [2023-11-19 07:49:15,782 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:49:15,784 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. [2023-11-19 07:49:15,789 INFO L140 encePairwiseOnDemand]: 1193/1197 looper letters, 42 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-19 07:49:15,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 265 flow [2023-11-19 07:49:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1615 transitions. [2023-11-19 07:49:15,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2023-11-19 07:49:15,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1615 transitions. [2023-11-19 07:49:15,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1615 transitions. [2023-11-19 07:49:15,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:15,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1615 transitions. [2023-11-19 07:49:15,803 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) [2023-11-19 07:49:15,812 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) [2023-11-19 07:49:15,816 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) [2023-11-19 07:49:15,817 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 151 flow. Second operand 3 states and 1615 transitions. [2023-11-19 07:49:15,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 265 flow [2023-11-19 07:49:15,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:15,821 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 161 flow [2023-11-19 07:49:15,821 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} [2023-11-19 07:49:15,822 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -51 predicate places. [2023-11-19 07:49:15,822 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 161 flow [2023-11-19 07:49:15,824 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) [2023-11-19 07:49:15,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:15,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:15,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:16,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:16,057 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)] === [2023-11-19 07:49:16,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash -269487440, now seen corresponding path program 1 times [2023-11-19 07:49:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:16,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291643010] [2023-11-19 07:49:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:16,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:16,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:16,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060680210] [2023-11-19 07:49:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:16,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:16,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:16,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:49:16,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:16,293 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 [2023-11-19 07:49:16,318 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 [2023-11-19 07:49:16,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:16,353 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 [2023-11-19 07:49:16,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:16,390 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 [2023-11-19 07:49:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:16,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:16,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291643010] [2023-11-19 07:49:16,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060680210] [2023-11-19 07:49:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060680210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:16,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:16,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:16,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083657172] [2023-11-19 07:49:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:17,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1197 [2023-11-19 07:49:17,007 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) [2023-11-19 07:49:17,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:17,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1197 [2023-11-19 07:49:17,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:17,749 INFO L124 PetriNetUnfolderBase]: 2330/4521 cut-off events. [2023-11-19 07:49:17,749 INFO L125 PetriNetUnfolderBase]: For 146/254 co-relation queries the response was YES. [2023-11-19 07:49:17,760 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. [2023-11-19 07:49:17,787 INFO L140 encePairwiseOnDemand]: 1182/1197 looper letters, 89 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2023-11-19 07:49:17,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 160 transitions, 608 flow [2023-11-19 07:49:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:49:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3595 transitions. [2023-11-19 07:49:17,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42904881250745913 [2023-11-19 07:49:17,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3595 transitions. [2023-11-19 07:49:17,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3595 transitions. [2023-11-19 07:49:17,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:17,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3595 transitions. [2023-11-19 07:49:17,882 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) [2023-11-19 07:49:17,899 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) [2023-11-19 07:49:17,905 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) [2023-11-19 07:49:17,906 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 161 flow. Second operand 7 states and 3595 transitions. [2023-11-19 07:49:17,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 160 transitions, 608 flow [2023-11-19 07:49:17,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 160 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:17,913 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 410 flow [2023-11-19 07:49:17,913 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} [2023-11-19 07:49:17,915 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -40 predicate places. [2023-11-19 07:49:17,915 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 410 flow [2023-11-19 07:49:17,917 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) [2023-11-19 07:49:17,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:17,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:17,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:18,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:49:18,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:18,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:18,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1166716948, now seen corresponding path program 1 times [2023-11-19 07:49:18,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:18,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347929567] [2023-11-19 07:49:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:18,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936029785] [2023-11-19 07:49:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:18,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:18,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:18,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:49:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:18,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:49:18,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:18,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:18,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347929567] [2023-11-19 07:49:18,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936029785] [2023-11-19 07:49:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936029785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:18,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698211022] [2023-11-19 07:49:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:18,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 506 out of 1197 [2023-11-19 07:49:18,601 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) [2023-11-19 07:49:18,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:18,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 506 of 1197 [2023-11-19 07:49:18,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:19,376 INFO L124 PetriNetUnfolderBase]: 1339/4317 cut-off events. [2023-11-19 07:49:19,377 INFO L125 PetriNetUnfolderBase]: For 1063/1264 co-relation queries the response was YES. [2023-11-19 07:49:19,398 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. [2023-11-19 07:49:19,424 INFO L140 encePairwiseOnDemand]: 1186/1197 looper letters, 73 selfloop transitions, 13 changer transitions 0/159 dead transitions. [2023-11-19 07:49:19,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 720 flow [2023-11-19 07:49:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3106 transitions. [2023-11-19 07:49:19,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324700640490114 [2023-11-19 07:49:19,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3106 transitions. [2023-11-19 07:49:19,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3106 transitions. [2023-11-19 07:49:19,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:19,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3106 transitions. [2023-11-19 07:49:19,452 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) [2023-11-19 07:49:19,468 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) [2023-11-19 07:49:19,472 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) [2023-11-19 07:49:19,472 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 410 flow. Second operand 6 states and 3106 transitions. [2023-11-19 07:49:19,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 720 flow [2023-11-19 07:49:19,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:19,491 INFO L231 Difference]: Finished difference. Result has 91 places, 121 transitions, 503 flow [2023-11-19 07:49:19,492 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} [2023-11-19 07:49:19,494 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -32 predicate places. [2023-11-19 07:49:19,494 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 121 transitions, 503 flow [2023-11-19 07:49:19,495 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) [2023-11-19 07:49:19,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:19,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:19,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:19,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:19,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -15038628, now seen corresponding path program 1 times [2023-11-19 07:49:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930429519] [2023-11-19 07:49:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:19,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978969527] [2023-11-19 07:49:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:19,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:19,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:19,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:19,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:49:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:19,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:49:19,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:19,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930429519] [2023-11-19 07:49:19,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978969527] [2023-11-19 07:49:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978969527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573737836] [2023-11-19 07:49:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:19,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:20,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 1197 [2023-11-19 07:49:20,081 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) [2023-11-19 07:49:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:20,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 1197 [2023-11-19 07:49:20,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:21,011 INFO L124 PetriNetUnfolderBase]: 1613/5308 cut-off events. [2023-11-19 07:49:21,012 INFO L125 PetriNetUnfolderBase]: For 1803/2032 co-relation queries the response was YES. [2023-11-19 07:49:21,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 5308 events. 1613/5308 cut-off events. For 1803/2032 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 46901 event pairs, 615 based on Foata normal form. 0/4705 useless extension candidates. Maximal degree in co-relation 10370. Up to 1480 conditions per place. [2023-11-19 07:49:21,076 INFO L140 encePairwiseOnDemand]: 1191/1197 looper letters, 82 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2023-11-19 07:49:21,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 163 transitions, 867 flow [2023-11-19 07:49:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:49:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2639 transitions. [2023-11-19 07:49:21,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409356725146199 [2023-11-19 07:49:21,087 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2639 transitions. [2023-11-19 07:49:21,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2639 transitions. [2023-11-19 07:49:21,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:21,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2639 transitions. [2023-11-19 07:49:21,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 527.8) internal successors, (2639), 5 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:21,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1197.0) internal successors, (7182), 6 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:21,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1197.0) internal successors, (7182), 6 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:21,115 INFO L175 Difference]: Start difference. First operand has 91 places, 121 transitions, 503 flow. Second operand 5 states and 2639 transitions. [2023-11-19 07:49:21,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 163 transitions, 867 flow [2023-11-19 07:49:21,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 867 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:21,137 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 558 flow [2023-11-19 07:49:21,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2023-11-19 07:49:21,140 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -25 predicate places. [2023-11-19 07:49:21,140 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 558 flow [2023-11-19 07:49:21,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-19 07:49:21,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:21,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:21,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:21,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:21,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:21,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash 7597493, now seen corresponding path program 1 times [2023-11-19 07:49:21,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:21,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176189857] [2023-11-19 07:49:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:21,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:21,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:21,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462253708] [2023-11-19 07:49:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:21,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:21,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:21,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:21,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:49:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:21,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:49:21,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:21,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:21,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176189857] [2023-11-19 07:49:21,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:21,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462253708] [2023-11-19 07:49:21,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462253708] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:21,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-19 07:49:21,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612713931] [2023-11-19 07:49:21,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:21,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 1197 [2023-11-19 07:49:22,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 126 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 498.8) internal successors, (2494), 5 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:22,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:22,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 1197 [2023-11-19 07:49:22,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:23,088 INFO L124 PetriNetUnfolderBase]: 1758/5875 cut-off events. [2023-11-19 07:49:23,089 INFO L125 PetriNetUnfolderBase]: For 2229/2498 co-relation queries the response was YES. [2023-11-19 07:49:23,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11862 conditions, 5875 events. 1758/5875 cut-off events. For 2229/2498 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 53909 event pairs, 746 based on Foata normal form. 2/5145 useless extension candidates. Maximal degree in co-relation 11844. Up to 1492 conditions per place. [2023-11-19 07:49:23,156 INFO L140 encePairwiseOnDemand]: 1190/1197 looper letters, 69 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2023-11-19 07:49:23,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 158 transitions, 878 flow [2023-11-19 07:49:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3036 transitions. [2023-11-19 07:49:23,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227234753550543 [2023-11-19 07:49:23,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3036 transitions. [2023-11-19 07:49:23,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3036 transitions. [2023-11-19 07:49:23,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:23,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3036 transitions. [2023-11-19 07:49:23,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 506.0) internal successors, (3036), 6 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:23,194 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) [2023-11-19 07:49:23,197 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) [2023-11-19 07:49:23,197 INFO L175 Difference]: Start difference. First operand has 98 places, 126 transitions, 558 flow. Second operand 6 states and 3036 transitions. [2023-11-19 07:49:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 158 transitions, 878 flow [2023-11-19 07:49:23,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 870 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:23,219 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 662 flow [2023-11-19 07:49:23,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2023-11-19 07:49:23,220 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -19 predicate places. [2023-11-19 07:49:23,220 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 662 flow [2023-11-19 07:49:23,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 498.8) internal successors, (2494), 5 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:23,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:23,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:23,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:23,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:23,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1167974512, now seen corresponding path program 1 times [2023-11-19 07:49:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750777129] [2023-11-19 07:49:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:23,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747325141] [2023-11-19 07:49:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:23,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:23,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:23,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:49:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:23,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:49:23,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:23,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750777129] [2023-11-19 07:49:23,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747325141] [2023-11-19 07:49:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747325141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:23,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765304964] [2023-11-19 07:49:23,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:23,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:23,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:24,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 506 out of 1197 [2023-11-19 07:49:24,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 134 transitions, 662 flow. Second operand has 5 states, 5 states have (on average 508.4) internal successors, (2542), 5 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:24,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:24,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 506 of 1197 [2023-11-19 07:49:24,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:25,091 INFO L124 PetriNetUnfolderBase]: 2150/6781 cut-off events. [2023-11-19 07:49:25,091 INFO L125 PetriNetUnfolderBase]: For 2605/2887 co-relation queries the response was YES. [2023-11-19 07:49:25,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14239 conditions, 6781 events. 2150/6781 cut-off events. For 2605/2887 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 63332 event pairs, 887 based on Foata normal form. 0/6052 useless extension candidates. Maximal degree in co-relation 14219. Up to 1839 conditions per place. [2023-11-19 07:49:25,238 INFO L140 encePairwiseOnDemand]: 1191/1197 looper letters, 90 selfloop transitions, 23 changer transitions 0/186 dead transitions. [2023-11-19 07:49:25,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 186 transitions, 1168 flow [2023-11-19 07:49:25,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3096 transitions. [2023-11-19 07:49:25,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43107769423558895 [2023-11-19 07:49:25,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3096 transitions. [2023-11-19 07:49:25,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3096 transitions. [2023-11-19 07:49:25,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:25,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3096 transitions. [2023-11-19 07:49:25,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 516.0) internal successors, (3096), 6 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:25,274 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) [2023-11-19 07:49:25,276 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) [2023-11-19 07:49:25,277 INFO L175 Difference]: Start difference. First operand has 104 places, 134 transitions, 662 flow. Second operand 6 states and 3096 transitions. [2023-11-19 07:49:25,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 186 transitions, 1168 flow [2023-11-19 07:49:25,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 186 transitions, 1166 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:25,303 INFO L231 Difference]: Finished difference. Result has 113 places, 147 transitions, 859 flow [2023-11-19 07:49:25,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=859, PETRI_PLACES=113, PETRI_TRANSITIONS=147} [2023-11-19 07:49:25,304 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -10 predicate places. [2023-11-19 07:49:25,304 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 147 transitions, 859 flow [2023-11-19 07:49:25,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 508.4) internal successors, (2542), 5 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:25,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:25,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:25,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:25,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:25,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 327574443, now seen corresponding path program 1 times [2023-11-19 07:49:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:25,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086257105] [2023-11-19 07:49:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:25,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969962405] [2023-11-19 07:49:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:25,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:25,560 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:25,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:49:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:25,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:49:25,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:25,781 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 [2023-11-19 07:49:25,805 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 [2023-11-19 07:49:25,833 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:25,834 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 [2023-11-19 07:49:25,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:25,870 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 [2023-11-19 07:49:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:25,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:49:25,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:25,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086257105] [2023-11-19 07:49:25,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:25,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969962405] [2023-11-19 07:49:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969962405] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:25,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:25,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-11-19 07:49:25,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970574275] [2023-11-19 07:49:25,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:25,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:25,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:49:26,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1197 [2023-11-19 07:49:26,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 147 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 498.0) internal successors, (2988), 6 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:26,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:26,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1197 [2023-11-19 07:49:26,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:28,773 INFO L124 PetriNetUnfolderBase]: 4217/10359 cut-off events. [2023-11-19 07:49:28,773 INFO L125 PetriNetUnfolderBase]: For 6721/7548 co-relation queries the response was YES. [2023-11-19 07:49:28,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25285 conditions, 10359 events. 4217/10359 cut-off events. For 6721/7548 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 93221 event pairs, 1339 based on Foata normal form. 3/9657 useless extension candidates. Maximal degree in co-relation 25260. Up to 4982 conditions per place. [2023-11-19 07:49:28,886 INFO L140 encePairwiseOnDemand]: 1186/1197 looper letters, 150 selfloop transitions, 90 changer transitions 0/277 dead transitions. [2023-11-19 07:49:28,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 277 transitions, 1993 flow [2023-11-19 07:49:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3061 transitions. [2023-11-19 07:49:28,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262043998886104 [2023-11-19 07:49:28,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3061 transitions. [2023-11-19 07:49:28,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3061 transitions. [2023-11-19 07:49:28,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:28,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3061 transitions. [2023-11-19 07:49:28,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 510.1666666666667) internal successors, (3061), 6 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:28,930 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) [2023-11-19 07:49:28,934 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) [2023-11-19 07:49:28,934 INFO L175 Difference]: Start difference. First operand has 113 places, 147 transitions, 859 flow. Second operand 6 states and 3061 transitions. [2023-11-19 07:49:28,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 277 transitions, 1993 flow [2023-11-19 07:49:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 277 transitions, 1979 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:28,974 INFO L231 Difference]: Finished difference. Result has 123 places, 236 transitions, 1749 flow [2023-11-19 07:49:28,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1197, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1749, PETRI_PLACES=123, PETRI_TRANSITIONS=236} [2023-11-19 07:49:28,977 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-19 07:49:28,977 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 236 transitions, 1749 flow [2023-11-19 07:49:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 498.0) internal successors, (2988), 6 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:28,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:28,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:29,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:29,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:29,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-11-19 07:49:29,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash -249193791, now seen corresponding path program 1 times [2023-11-19 07:49:29,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:29,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777541330] [2023-11-19 07:49:29,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:29,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:29,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:29,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630000614] [2023-11-19 07:49:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:29,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:29,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:29,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866a154e-83ce-408b-b5cc-124e1cc16b46/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:49:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:29,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:49:29,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:29,424 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 [2023-11-19 07:49:29,436 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 [2023-11-19 07:49:29,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:29,459 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 [2023-11-19 07:49:29,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:29,492 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 [2023-11-19 07:49:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:49:29,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:29,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777541330] [2023-11-19 07:49:29,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630000614] [2023-11-19 07:49:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630000614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:29,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534239088] [2023-11-19 07:49:29,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:29,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:30,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1197 [2023-11-19 07:49:30,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 236 transitions, 1749 flow. Second operand has 6 states, 6 states have (on average 497.6666666666667) internal successors, (2986), 6 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:30,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:30,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1197 [2023-11-19 07:49:30,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand