./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:38:28,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:38:29,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:38:29,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:38:29,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:38:29,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:38:29,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:38:29,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:38:29,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:38:29,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:38:29,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:38:29,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:38:29,133 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:38:29,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:38:29,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:38:29,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:38:29,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:38:29,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:38:29,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:38:29,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:38:29,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:38:29,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:38:29,145 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:38:29,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:38:29,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:38:29,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:38:29,151 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:38:29,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:38:29,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:38:29,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:38:29,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:38:29,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:38:29,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:38:29,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:38:29,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:38:29,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:38:29,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:38:29,156 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:38:29,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:38:29,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:38:29,157 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:38:29,157 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_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2023-11-06 22:38:29,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:38:29,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:38:29,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:38:29,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:38:29,468 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:38:29,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2023-11-06 22:38:32,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:38:33,115 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:38:33,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2023-11-06 22:38:33,136 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/data/f235582c3/2aea1b66d5204833b66464e636441459/FLAG782e3e1a2 [2023-11-06 22:38:33,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/data/f235582c3/2aea1b66d5204833b66464e636441459 [2023-11-06 22:38:33,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:38:33,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:38:33,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:38:33,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:38:33,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:38:33,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:33,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462b66cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33, skipping insertion in model container [2023-11-06 22:38:33,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:33,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:38:33,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:38:33,747 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:38:33,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:38:33,860 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:38:33,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33 WrapperNode [2023-11-06 22:38:33,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:38:33,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:38:33,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:38:33,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:38:33,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:33,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:33,975 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2023-11-06 22:38:33,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:38:33,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:38:33,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:38:33,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:38:33,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:33,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:38:34,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:38:34,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:38:34,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:38:34,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (1/1) ... [2023-11-06 22:38:34,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:38:34,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:34,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:38:34,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:38:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:38:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:38:34,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:38:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:38:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:38:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:38:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:38:34,183 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:38:34,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:38:34,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:38:34,185 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:38:34,374 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:38:34,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:38:34,611 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:38:34,620 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:38:34,620 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:38:34,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:34 BoogieIcfgContainer [2023-11-06 22:38:34,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:38:34,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:38:34,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:38:34,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:38:34,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:38:33" (1/3) ... [2023-11-06 22:38:34,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615e68f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:34, skipping insertion in model container [2023-11-06 22:38:34,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:33" (2/3) ... [2023-11-06 22:38:34,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615e68f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:34, skipping insertion in model container [2023-11-06 22:38:34,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:34" (3/3) ... [2023-11-06 22:38:34,634 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2023-11-06 22:38:34,644 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:38:34,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:38:34,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:38:34,656 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:38:34,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:38:34,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 208 flow [2023-11-06 22:38:34,927 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-11-06 22:38:34,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:38:34,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 4/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 22:38:34,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 208 flow [2023-11-06 22:38:34,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 101 transitions, 205 flow [2023-11-06 22:38:34,942 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:38:34,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 101 transitions, 205 flow [2023-11-06 22:38:34,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 101 transitions, 205 flow [2023-11-06 22:38:34,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 101 transitions, 205 flow [2023-11-06 22:38:34,988 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-11-06 22:38:34,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:38:34,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 4/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 22:38:34,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2023-11-06 22:38:37,337 INFO L134 LiptonReduction]: Checked pairs total: 8293 [2023-11-06 22:38:37,339 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-11-06 22:38:37,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:38:37,367 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@620b8096, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:38:37,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:38:37,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:38:37,373 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-11-06 22:38:37,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:38:37,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:37,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:37,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:37,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1357459196, now seen corresponding path program 1 times [2023-11-06 22:38:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:37,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937643797] [2023-11-06 22:38:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:37,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:37,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937643797] [2023-11-06 22:38:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937643797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:37,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:37,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927927340] [2023-11-06 22:38:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:37,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:37,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:37,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:37,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:37,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 179 [2023-11-06 22:38:37,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:37,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:37,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 179 [2023-11-06 22:38:37,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:37,946 INFO L124 PetriNetUnfolderBase]: 37/165 cut-off events. [2023-11-06 22:38:37,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:38:37,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2023-11-06 22:38:37,950 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-06 22:38:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-11-06 22:38:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-11-06 22:38:37,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547486033519553 [2023-11-06 22:38:37,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-11-06 22:38:37,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-11-06 22:38:37,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:37,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-11-06 22:38:37,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,005 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 294 transitions. [2023-11-06 22:38:38,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-11-06 22:38:38,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:38,011 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-11-06 22:38:38,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-06 22:38:38,018 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-06 22:38:38,018 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-11-06 22:38:38,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:38,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:38,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:38:38,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:38,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -224437813, now seen corresponding path program 1 times [2023-11-06 22:38:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366998970] [2023-11-06 22:38:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:38,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366998970] [2023-11-06 22:38:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366998970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:38:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283985344] [2023-11-06 22:38:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:38,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:38,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:38,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:38,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:38:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:38,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:38,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:38,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283985344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:38,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:38:38,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:38:38,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621543945] [2023-11-06 22:38:38,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:38,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:38:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:38:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:38:38,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 179 [2023-11-06 22:38:38,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:38,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 179 [2023-11-06 22:38:38,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:38,517 INFO L124 PetriNetUnfolderBase]: 37/168 cut-off events. [2023-11-06 22:38:38,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:38:38,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2023-11-06 22:38:38,522 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-11-06 22:38:38,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-11-06 22:38:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-11-06 22:38:38,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297951582867784 [2023-11-06 22:38:38,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-11-06 22:38:38,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-11-06 22:38:38,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:38,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-11-06 22:38:38,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,543 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,549 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 569 transitions. [2023-11-06 22:38:38,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-11-06 22:38:38,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:38,552 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-11-06 22:38:38,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-06 22:38:38,553 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-11-06 22:38:38,554 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-11-06 22:38:38,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:38,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:38,558 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:38,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:38,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:38,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1856615740, now seen corresponding path program 2 times [2023-11-06 22:38:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:38,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130003991] [2023-11-06 22:38:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:38:39,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:39,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130003991] [2023-11-06 22:38:39,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130003991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:39,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:39,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:38:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469658712] [2023-11-06 22:38:39,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:39,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:39,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 179 [2023-11-06 22:38:39,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:39,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:39,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 179 [2023-11-06 22:38:39,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:39,760 INFO L124 PetriNetUnfolderBase]: 176/425 cut-off events. [2023-11-06 22:38:39,760 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:38:39,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 425 events. 176/425 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1796 event pairs, 82 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 808. Up to 282 conditions per place. [2023-11-06 22:38:39,768 INFO L140 encePairwiseOnDemand]: 168/179 looper letters, 57 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2023-11-06 22:38:39,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 86 transitions, 368 flow [2023-11-06 22:38:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-11-06 22:38:39,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121042830540037 [2023-11-06 22:38:39,773 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-11-06 22:38:39,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-11-06 22:38:39,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:39,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-11-06 22:38:39,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:39,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:39,781 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:39,782 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 550 transitions. [2023-11-06 22:38:39,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 86 transitions, 368 flow [2023-11-06 22:38:39,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 86 transitions, 354 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:39,788 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 254 flow [2023-11-06 22:38:39,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-11-06 22:38:39,790 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2023-11-06 22:38:39,790 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 254 flow [2023-11-06 22:38:39,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:39,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:39,792 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:39,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:38:39,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:39,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash -574703238, now seen corresponding path program 1 times [2023-11-06 22:38:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283250920] [2023-11-06 22:38:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:38:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:40,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283250920] [2023-11-06 22:38:40,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283250920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:40,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:40,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:38:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407858165] [2023-11-06 22:38:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:40,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:40,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 179 [2023-11-06 22:38:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 179 [2023-11-06 22:38:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:40,534 INFO L124 PetriNetUnfolderBase]: 204/497 cut-off events. [2023-11-06 22:38:40,534 INFO L125 PetriNetUnfolderBase]: For 119/122 co-relation queries the response was YES. [2023-11-06 22:38:40,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 497 events. 204/497 cut-off events. For 119/122 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2305 event pairs, 76 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1135. Up to 327 conditions per place. [2023-11-06 22:38:40,540 INFO L140 encePairwiseOnDemand]: 168/179 looper letters, 65 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2023-11-06 22:38:40,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 538 flow [2023-11-06 22:38:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2023-11-06 22:38:40,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242085661080075 [2023-11-06 22:38:40,544 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2023-11-06 22:38:40,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2023-11-06 22:38:40,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:40,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2023-11-06 22:38:40,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:40,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:40,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:40,553 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 254 flow. Second operand 6 states and 563 transitions. [2023-11-06 22:38:40,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 538 flow [2023-11-06 22:38:40,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:38:40,567 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 438 flow [2023-11-06 22:38:40,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2023-11-06 22:38:40,570 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2023-11-06 22:38:40,570 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 438 flow [2023-11-06 22:38:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:40,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:40,571 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:38:40,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:40,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash -555116669, now seen corresponding path program 1 times [2023-11-06 22:38:40,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319189911] [2023-11-06 22:38:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:40,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319189911] [2023-11-06 22:38:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319189911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:38:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459155107] [2023-11-06 22:38:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:40,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:40,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:40,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:38:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:40,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:38:40,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:40,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459155107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:40,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:38:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:38:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047922984] [2023-11-06 22:38:40,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:40,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:38:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:38:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:38:40,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 179 [2023-11-06 22:38:40,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 438 flow. Second operand has 13 states, 13 states have (on average 92.46153846153847) internal successors, (1202), 13 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:40,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:40,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 179 [2023-11-06 22:38:40,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:41,101 INFO L124 PetriNetUnfolderBase]: 124/387 cut-off events. [2023-11-06 22:38:41,101 INFO L125 PetriNetUnfolderBase]: For 242/249 co-relation queries the response was YES. [2023-11-06 22:38:41,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 387 events. 124/387 cut-off events. For 242/249 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1949 event pairs, 46 based on Foata normal form. 6/385 useless extension candidates. Maximal degree in co-relation 942. Up to 152 conditions per place. [2023-11-06 22:38:41,106 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 21 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-11-06 22:38:41,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 538 flow [2023-11-06 22:38:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:38:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:38:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1124 transitions. [2023-11-06 22:38:41,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232774674115456 [2023-11-06 22:38:41,112 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1124 transitions. [2023-11-06 22:38:41,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1124 transitions. [2023-11-06 22:38:41,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:41,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1124 transitions. [2023-11-06 22:38:41,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:41,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 179.0) internal successors, (2327), 13 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:41,125 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 179.0) internal successors, (2327), 13 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:41,126 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 438 flow. Second operand 12 states and 1124 transitions. [2023-11-06 22:38:41,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 538 flow [2023-11-06 22:38:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:38:41,133 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 522 flow [2023-11-06 22:38:41,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-11-06 22:38:41,136 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2023-11-06 22:38:41,136 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 522 flow [2023-11-06 22:38:41,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 92.46153846153847) internal successors, (1202), 13 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:41,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:41,138 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:41,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:41,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:41,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:41,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash -206573021, now seen corresponding path program 2 times [2023-11-06 22:38:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517387057] [2023-11-06 22:38:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:38:41,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517387057] [2023-11-06 22:38:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517387057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:41,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:41,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:38:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583731064] [2023-11-06 22:38:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:41,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:42,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-11-06 22:38:42,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:42,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-11-06 22:38:42,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:42,370 INFO L124 PetriNetUnfolderBase]: 323/726 cut-off events. [2023-11-06 22:38:42,371 INFO L125 PetriNetUnfolderBase]: For 538/544 co-relation queries the response was YES. [2023-11-06 22:38:42,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 726 events. 323/726 cut-off events. For 538/544 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3345 event pairs, 129 based on Foata normal form. 0/708 useless extension candidates. Maximal degree in co-relation 2152. Up to 604 conditions per place. [2023-11-06 22:38:42,379 INFO L140 encePairwiseOnDemand]: 165/179 looper letters, 95 selfloop transitions, 49 changer transitions 8/155 dead transitions. [2023-11-06 22:38:42,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 155 transitions, 1098 flow [2023-11-06 22:38:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2023-11-06 22:38:42,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49534450651769085 [2023-11-06 22:38:42,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2023-11-06 22:38:42,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2023-11-06 22:38:42,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:42,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2023-11-06 22:38:42,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,389 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 522 flow. Second operand 6 states and 532 transitions. [2023-11-06 22:38:42,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 155 transitions, 1098 flow [2023-11-06 22:38:42,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 155 transitions, 1050 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 22:38:42,400 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 869 flow [2023-11-06 22:38:42,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2023-11-06 22:38:42,403 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2023-11-06 22:38:42,403 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 869 flow [2023-11-06 22:38:42,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:42,404 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:42,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:38:42,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:42,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash -888716968, now seen corresponding path program 1 times [2023-11-06 22:38:42,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:42,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104893786] [2023-11-06 22:38:42,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:42,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:38:42,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104893786] [2023-11-06 22:38:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104893786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:42,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:38:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493408216] [2023-11-06 22:38:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:42,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:42,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-11-06 22:38:42,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:42,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-11-06 22:38:42,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:43,265 INFO L124 PetriNetUnfolderBase]: 377/850 cut-off events. [2023-11-06 22:38:43,265 INFO L125 PetriNetUnfolderBase]: For 1041/1055 co-relation queries the response was YES. [2023-11-06 22:38:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 850 events. 377/850 cut-off events. For 1041/1055 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4179 event pairs, 102 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 2938. Up to 659 conditions per place. [2023-11-06 22:38:43,275 INFO L140 encePairwiseOnDemand]: 164/179 looper letters, 124 selfloop transitions, 61 changer transitions 12/202 dead transitions. [2023-11-06 22:38:43,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 202 transitions, 1614 flow [2023-11-06 22:38:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-11-06 22:38:43,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083798882681564 [2023-11-06 22:38:43,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-11-06 22:38:43,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-11-06 22:38:43,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:43,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-11-06 22:38:43,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:43,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:43,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:43,286 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 869 flow. Second operand 6 states and 546 transitions. [2023-11-06 22:38:43,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 202 transitions, 1614 flow [2023-11-06 22:38:43,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 202 transitions, 1550 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-11-06 22:38:43,304 INFO L231 Difference]: Finished difference. Result has 98 places, 178 transitions, 1371 flow [2023-11-06 22:38:43,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1371, PETRI_PLACES=98, PETRI_TRANSITIONS=178} [2023-11-06 22:38:43,305 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-11-06 22:38:43,305 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 178 transitions, 1371 flow [2023-11-06 22:38:43,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:43,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:43,306 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:43,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:38:43,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:38:43,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1966862584, now seen corresponding path program 1 times [2023-11-06 22:38:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:43,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323304052] [2023-11-06 22:38:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:43,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323304052] [2023-11-06 22:38:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323304052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:38:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821097648] [2023-11-06 22:38:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:55,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:55,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:55,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:38:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:55,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-06 22:38:55,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:55,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-06 22:38:55,661 INFO L322 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-06 22:38:55,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-11-06 22:38:55,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:38:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:55,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 11 [2023-11-06 22:38:55,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:38:56,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2023-11-06 22:38:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2023-11-06 22:38:56,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2023-11-06 22:38:56,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 89 [2023-11-06 22:38:56,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:56,855 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:38:56,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 101 [2023-11-06 22:39:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:39:03,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:10,428 INFO L322 Elim1Store]: treesize reduction 35, result has 46.2 percent of original size [2023-11-06 22:39:10,429 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 2647 treesize of output 1811 [2023-11-06 22:39:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:10,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 81 [2023-11-06 22:39:10,452 INFO L322 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2023-11-06 22:39:10,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 70 [2023-11-06 22:39:10,460 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:39:10,624 INFO L322 Elim1Store]: treesize reduction 35, result has 46.2 percent of original size [2023-11-06 22:39:10,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 3215 treesize of output 2231 [2023-11-06 22:39:10,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:10,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 79 [2023-11-06 22:39:10,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:39:10,656 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,665 INFO L322 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2023-11-06 22:39:10,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 169 [2023-11-06 22:39:10,761 INFO L322 Elim1Store]: treesize reduction 35, result has 46.2 percent of original size [2023-11-06 22:39:10,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 2576 treesize of output 1819 [2023-11-06 22:39:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:10,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 81 [2023-11-06 22:39:10,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:39:10,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,794 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,804 INFO L322 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2023-11-06 22:39:10,804 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 32 [2023-11-06 22:39:10,865 INFO L322 Elim1Store]: treesize reduction 35, result has 46.2 percent of original size [2023-11-06 22:39:10,865 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 2027 treesize of output 1418 [2023-11-06 22:39:10,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:10,883 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 81 [2023-11-06 22:39:10,886 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,887 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:10,896 INFO L322 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2023-11-06 22:39:10,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 32 [2023-11-06 22:39:10,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-06 22:39:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:39:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821097648] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:11,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 19] total 49 [2023-11-06 22:39:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721849814] [2023-11-06 22:39:11,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:39:11,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:39:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2185, Unknown=4, NotChecked=0, Total=2450 [2023-11-06 22:39:15,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:21,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:23,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:28,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:31,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:32,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:39,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:44,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:39:46,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 179 [2023-11-06 22:39:46,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 178 transitions, 1371 flow. Second operand has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:46,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:46,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 179 [2023-11-06 22:39:46,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:14,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:40:17,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:40:22,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:40:23,195 INFO L124 PetriNetUnfolderBase]: 822/1821 cut-off events. [2023-11-06 22:40:23,196 INFO L125 PetriNetUnfolderBase]: For 3745/3788 co-relation queries the response was YES. [2023-11-06 22:40:23,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7650 conditions, 1821 events. 822/1821 cut-off events. For 3745/3788 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11463 event pairs, 38 based on Foata normal form. 11/1832 useless extension candidates. Maximal degree in co-relation 7580. Up to 604 conditions per place. [2023-11-06 22:40:23,217 INFO L140 encePairwiseOnDemand]: 159/179 looper letters, 355 selfloop transitions, 105 changer transitions 35/503 dead transitions. [2023-11-06 22:40:23,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 503 transitions, 4696 flow [2023-11-06 22:40:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:40:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:40:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1006 transitions. [2023-11-06 22:40:23,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46834264432029793 [2023-11-06 22:40:23,223 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1006 transitions. [2023-11-06 22:40:23,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1006 transitions. [2023-11-06 22:40:23,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:23,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1006 transitions. [2023-11-06 22:40:23,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 83.83333333333333) internal successors, (1006), 12 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:23,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 179.0) internal successors, (2327), 13 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:23,234 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 179.0) internal successors, (2327), 13 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:23,234 INFO L175 Difference]: Start difference. First operand has 98 places, 178 transitions, 1371 flow. Second operand 12 states and 1006 transitions. [2023-11-06 22:40:23,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 503 transitions, 4696 flow [2023-11-06 22:40:23,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 503 transitions, 4542 flow, removed 77 selfloop flow, removed 0 redundant places. [2023-11-06 22:40:23,285 INFO L231 Difference]: Finished difference. Result has 118 places, 268 transitions, 2508 flow [2023-11-06 22:40:23,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2508, PETRI_PLACES=118, PETRI_TRANSITIONS=268} [2023-11-06 22:40:23,288 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2023-11-06 22:40:23,289 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 268 transitions, 2508 flow [2023-11-06 22:40:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:23,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:23,290 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:23,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:23,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:23,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:40:23,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1936265848, now seen corresponding path program 2 times [2023-11-06 22:40:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702427651] [2023-11-06 22:40:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702427651] [2023-11-06 22:41:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702427651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675707319] [2023-11-06 22:41:17,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:17,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:17,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:17,098 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:17,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3665c4-84fc-41b7-894b-6095e68794fc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:41:17,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:41:17,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:17,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:41:17,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:17,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:41:17,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:41:17,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:41:17,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-06 22:41:17,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-06 22:41:17,698 INFO L322 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-06 22:41:17,698 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-11-06 22:41:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-11-06 22:41:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:17,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2023-11-06 22:41:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,047 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 73 [2023-11-06 22:41:18,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,213 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 88 [2023-11-06 22:41:18,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:18,632 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:41:18,633 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 104 [2023-11-06 22:41:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:41:36,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675707319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:36,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:36,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 33 [2023-11-06 22:41:36,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464661271] [2023-11-06 22:41:36,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:36,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:41:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:36,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:41:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=942, Unknown=9, NotChecked=0, Total=1122 [2023-11-06 22:41:38,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:41,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:43,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:45,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:47,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:49,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:51,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:53,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:55,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:57,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:41:59,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:02,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:04,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:06,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:07,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:09,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:11,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:13,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:15,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:15,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 179 [2023-11-06 22:42:15,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 268 transitions, 2508 flow. Second operand has 13 states, 13 states have (on average 59.53846153846154) internal successors, (774), 13 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:15,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:15,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 179 [2023-11-06 22:42:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:17,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:21,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:23,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:25,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:42:30,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]