./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/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_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:42:24,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:42:25,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:42:25,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:42:25,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:42:25,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:42:25,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:42:25,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:42:25,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:42:25,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:42:25,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:42:25,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:42:25,094 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:42:25,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:42:25,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:42:25,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:42:25,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:42:25,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:42:25,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:42:25,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:42:25,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:42:25,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:42:25,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:42:25,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:42:25,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:42:25,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:42:25,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:42:25,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:42:25,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:25,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:42:25,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:42:25,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:42:25,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:42:25,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:42:25,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:42:25,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:42:25,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:42:25,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:42:25,111 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:42:25,111 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_019ac36c-008b-42b5-9011-3b6498be122d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2023-11-06 22:42:25,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:42:25,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:42:25,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:42:25,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:42:25,512 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:42:25,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-06 22:42:28,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:42:29,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:42:29,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-06 22:42:29,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/data/0ac79c481/77cbd116e48a41fdada7407c21de6fec/FLAG772a29e49 [2023-11-06 22:42:29,212 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/data/0ac79c481/77cbd116e48a41fdada7407c21de6fec [2023-11-06 22:42:29,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:42:29,226 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:42:29,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:29,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:42:29,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:42:29,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:29" (1/1) ... [2023-11-06 22:42:29,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e3b68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:29, skipping insertion in model container [2023-11-06 22:42:29,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:29" (1/1) ... [2023-11-06 22:42:29,336 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:42:30,163 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-06 22:42:30,187 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,188 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,189 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,191 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:30,267 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:42:30,315 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-06 22:42:30,320 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,320 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,321 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,322 WARN L1577 CHandler]: Possible shadowing of function new [2023-11-06 22:42:30,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:30,454 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:42:30,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30 WrapperNode [2023-11-06 22:42:30,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:30,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:30,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:42:30,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:42:30,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,553 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 309 [2023-11-06 22:42:30,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:30,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:42:30,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:42:30,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:42:30,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:42:30,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:42:30,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:42:30,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:42:30,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (1/1) ... [2023-11-06 22:42:30,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:30,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:42:30,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:42:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:42:30,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:42:30,740 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 22:42:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 22:42:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:42:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:42:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 22:42:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 22:42:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:42:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:42:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:42:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:42:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:42:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:42:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:42:30,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:42:30,746 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 22:42:30,967 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:42:30,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:42:31,590 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:42:31,604 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:42:31,605 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-06 22:42:31,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:31 BoogieIcfgContainer [2023-11-06 22:42:31,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:42:31,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:42:31,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:42:31,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:42:31,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:42:29" (1/3) ... [2023-11-06 22:42:31,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9aa098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:31, skipping insertion in model container [2023-11-06 22:42:31,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:30" (2/3) ... [2023-11-06 22:42:31,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9aa098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:31, skipping insertion in model container [2023-11-06 22:42:31,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:31" (3/3) ... [2023-11-06 22:42:31,629 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-11-06 22:42:31,640 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:42:31,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:42:31,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:42:31,655 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:42:31,918 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:42:31,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 324 transitions, 668 flow [2023-11-06 22:42:32,185 INFO L124 PetriNetUnfolderBase]: 77/532 cut-off events. [2023-11-06 22:42:32,186 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:42:32,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 532 events. 77/532 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2542 event pairs, 0 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 271. Up to 8 conditions per place. [2023-11-06 22:42:32,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 324 transitions, 668 flow [2023-11-06 22:42:32,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 324 transitions, 668 flow [2023-11-06 22:42:32,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:42:32,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 324 transitions, 668 flow [2023-11-06 22:42:32,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 324 transitions, 668 flow [2023-11-06 22:42:32,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 324 transitions, 668 flow [2023-11-06 22:42:32,372 INFO L124 PetriNetUnfolderBase]: 77/532 cut-off events. [2023-11-06 22:42:32,372 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:42:32,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 532 events. 77/532 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2542 event pairs, 0 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 271. Up to 8 conditions per place. [2023-11-06 22:42:32,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 35126 [2023-11-06 22:43:08,420 INFO L134 LiptonReduction]: Checked pairs total: 53959 [2023-11-06 22:43:08,420 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-11-06 22:43:08,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:43:08,442 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;@254d7283, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:43:08,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 22:43:08,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:43:08,450 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2023-11-06 22:43:08,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:43:08,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:08,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:43:08,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:08,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1117194426, now seen corresponding path program 1 times [2023-11-06 22:43:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071650637] [2023-11-06 22:43:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071650637] [2023-11-06 22:43:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071650637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:08,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:08,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:43:08,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756478432] [2023-11-06 22:43:08,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:08,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:43:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:43:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:08,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 606 [2023-11-06 22:43:08,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:08,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:08,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 606 [2023-11-06 22:43:08,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:10,595 INFO L124 PetriNetUnfolderBase]: 5067/8303 cut-off events. [2023-11-06 22:43:10,596 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-11-06 22:43:10,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15759 conditions, 8303 events. 5067/8303 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 51202 event pairs, 4144 based on Foata normal form. 1281/7733 useless extension candidates. Maximal degree in co-relation 14898. Up to 7342 conditions per place. [2023-11-06 22:43:10,689 INFO L140 encePairwiseOnDemand]: 583/606 looper letters, 59 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-06 22:43:10,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 294 flow [2023-11-06 22:43:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:43:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:43:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-11-06 22:43:10,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005500550055005 [2023-11-06 22:43:10,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-11-06 22:43:10,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-11-06 22:43:10,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:10,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-11-06 22:43:10,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 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 22:43:10,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 22:43:10,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 22:43:10,760 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 206 flow. Second operand 3 states and 910 transitions. [2023-11-06 22:43:10,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 294 flow [2023-11-06 22:43:10,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:43:10,773 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 178 flow [2023-11-06 22:43:10,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-11-06 22:43:10,783 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-11-06 22:43:10,783 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 178 flow [2023-11-06 22:43:10,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:10,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:10,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:10,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:43:10,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:10,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:10,787 INFO L85 PathProgramCache]: Analyzing trace with hash 635520620, now seen corresponding path program 1 times [2023-11-06 22:43:10,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:10,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624822533] [2023-11-06 22:43:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:10,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:11,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:11,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624822533] [2023-11-06 22:43:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624822533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:11,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:11,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:43:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823112916] [2023-11-06 22:43:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:11,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:43:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:43:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:11,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 606 [2023-11-06 22:43:11,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 22:43:11,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:11,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 606 [2023-11-06 22:43:11,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:12,555 INFO L124 PetriNetUnfolderBase]: 5067/8305 cut-off events. [2023-11-06 22:43:12,555 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-11-06 22:43:12,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15770 conditions, 8305 events. 5067/8305 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 51194 event pairs, 4144 based on Foata normal form. 2/6459 useless extension candidates. Maximal degree in co-relation 15751. Up to 7345 conditions per place. [2023-11-06 22:43:12,641 INFO L140 encePairwiseOnDemand]: 603/606 looper letters, 58 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-11-06 22:43:12,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 300 flow [2023-11-06 22:43:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:43:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:43:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2023-11-06 22:43:12,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884488448844885 [2023-11-06 22:43:12,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2023-11-06 22:43:12,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2023-11-06 22:43:12,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:12,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2023-11-06 22:43:12,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 22:43:12,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 22:43:12,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 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 22:43:12,663 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 178 flow. Second operand 3 states and 888 transitions. [2023-11-06 22:43:12,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 300 flow [2023-11-06 22:43:12,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:43:12,668 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 190 flow [2023-11-06 22:43:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-11-06 22:43:12,670 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-11-06 22:43:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 190 flow [2023-11-06 22:43:12,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 22:43:12,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:12,672 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:43:12,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:12,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1974068313, now seen corresponding path program 1 times [2023-11-06 22:43:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653281653] [2023-11-06 22:43:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:12,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:12,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356489797] [2023-11-06 22:43:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:12,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:12,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:12,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:12,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:43:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:13,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:43:13,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:13,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:13,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653281653] [2023-11-06 22:43:13,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356489797] [2023-11-06 22:43:13,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356489797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:13,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:13,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:43:13,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099476448] [2023-11-06 22:43:13,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:13,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 606 [2023-11-06 22:43:13,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 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 22:43:13,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:13,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 606 [2023-11-06 22:43:13,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:14,774 INFO L124 PetriNetUnfolderBase]: 5067/8311 cut-off events. [2023-11-06 22:43:14,774 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-06 22:43:14,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15798 conditions, 8311 events. 5067/8311 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 51207 event pairs, 4144 based on Foata normal form. 6/6469 useless extension candidates. Maximal degree in co-relation 15758. Up to 7345 conditions per place. [2023-11-06 22:43:14,840 INFO L140 encePairwiseOnDemand]: 603/606 looper letters, 58 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-11-06 22:43:14,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 328 flow [2023-11-06 22:43:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:43:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:43:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2023-11-06 22:43:14,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47167216721672167 [2023-11-06 22:43:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2023-11-06 22:43:14,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2023-11-06 22:43:14,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:14,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2023-11-06 22:43:14,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 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 22:43:14,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 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 22:43:14,872 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 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 22:43:14,872 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 190 flow. Second operand 6 states and 1715 transitions. [2023-11-06 22:43:14,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 328 flow [2023-11-06 22:43:14,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 324 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:43:14,882 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 228 flow [2023-11-06 22:43:14,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-11-06 22:43:14,884 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-11-06 22:43:14,885 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 228 flow [2023-11-06 22:43:14,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 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 22:43:14,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:14,887 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:14,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:15,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:43:15,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:15,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 571464108, now seen corresponding path program 2 times [2023-11-06 22:43:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043567129] [2023-11-06 22:43:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:15,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798936221] [2023-11-06 22:43:15,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:43:15,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:15,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:15,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:15,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:43:15,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:43:15,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:15,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:43:15,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:15,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:15,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:15,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043567129] [2023-11-06 22:43:15,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798936221] [2023-11-06 22:43:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798936221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:15,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:15,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-06 22:43:15,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571399966] [2023-11-06 22:43:15,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:15,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:43:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:43:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:43:15,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 606 [2023-11-06 22:43:15,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 276.4166666666667) internal successors, (3317), 12 states have internal predecessors, (3317), 0 states have call successors, (0), 0 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 22:43:15,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:15,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 606 [2023-11-06 22:43:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:18,260 INFO L124 PetriNetUnfolderBase]: 5067/8323 cut-off events. [2023-11-06 22:43:18,261 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-11-06 22:43:18,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15869 conditions, 8323 events. 5067/8323 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 51235 event pairs, 4144 based on Foata normal form. 12/6487 useless extension candidates. Maximal degree in co-relation 15754. Up to 7345 conditions per place. [2023-11-06 22:43:18,328 INFO L140 encePairwiseOnDemand]: 603/606 looper letters, 58 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-11-06 22:43:18,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 402 flow [2023-11-06 22:43:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:43:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:43:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3374 transitions. [2023-11-06 22:43:18,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46397139713971397 [2023-11-06 22:43:18,342 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3374 transitions. [2023-11-06 22:43:18,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3374 transitions. [2023-11-06 22:43:18,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:18,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3374 transitions. [2023-11-06 22:43:18,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 281.1666666666667) internal successors, (3374), 12 states have internal predecessors, (3374), 0 states have call successors, (0), 0 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 22:43:18,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 606.0) internal successors, (7878), 13 states have internal predecessors, (7878), 0 states have call successors, (0), 0 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 22:43:18,386 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 606.0) internal successors, (7878), 13 states have internal predecessors, (7878), 0 states have call successors, (0), 0 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 22:43:18,386 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 228 flow. Second operand 12 states and 3374 transitions. [2023-11-06 22:43:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 402 flow [2023-11-06 22:43:18,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 388 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:43:18,395 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 310 flow [2023-11-06 22:43:18,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=310, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2023-11-06 22:43:18,399 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2023-11-06 22:43:18,399 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 310 flow [2023-11-06 22:43:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 276.4166666666667) internal successors, (3317), 12 states have internal predecessors, (3317), 0 states have call successors, (0), 0 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 22:43:18,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:18,402 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:18,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:43:18,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:18,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:18,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash -653333876, now seen corresponding path program 3 times [2023-11-06 22:43:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:18,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619953929] [2023-11-06 22:43:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:18,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443164882] [2023-11-06 22:43:18,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:43:18,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:18,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:19,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:43:19,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:43:19,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:19,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:43:19,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-06 22:43:19,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-06 22:43:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619953929] [2023-11-06 22:43:19,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443164882] [2023-11-06 22:43:19,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443164882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:19,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-06 22:43:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120636287] [2023-11-06 22:43:19,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:19,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:19,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 606 [2023-11-06 22:43:19,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 277.1666666666667) internal successors, (1663), 6 states have internal predecessors, (1663), 0 states have call successors, (0), 0 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 22:43:19,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:19,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 606 [2023-11-06 22:43:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:22,235 INFO L124 PetriNetUnfolderBase]: 5061/8289 cut-off events. [2023-11-06 22:43:22,236 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2023-11-06 22:43:22,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16001 conditions, 8289 events. 5061/8289 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 50551 event pairs, 4144 based on Foata normal form. 3/6413 useless extension candidates. Maximal degree in co-relation 15694. Up to 7339 conditions per place. [2023-11-06 22:43:22,334 INFO L140 encePairwiseOnDemand]: 602/606 looper letters, 102 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2023-11-06 22:43:22,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 875 flow [2023-11-06 22:43:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:43:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:43:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1721 transitions. [2023-11-06 22:43:22,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47332233223322334 [2023-11-06 22:43:22,346 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1721 transitions. [2023-11-06 22:43:22,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1721 transitions. [2023-11-06 22:43:22,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:22,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1721 transitions. [2023-11-06 22:43:22,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.8333333333333) internal successors, (1721), 6 states have internal predecessors, (1721), 0 states have call successors, (0), 0 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 22:43:22,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 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 22:43:22,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 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 22:43:22,368 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 310 flow. Second operand 6 states and 1721 transitions. [2023-11-06 22:43:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 875 flow [2023-11-06 22:43:22,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 681 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-06 22:43:22,378 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 345 flow [2023-11-06 22:43:22,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-11-06 22:43:22,379 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2023-11-06 22:43:22,379 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 345 flow [2023-11-06 22:43:22,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.1666666666667) internal successors, (1663), 6 states have internal predecessors, (1663), 0 states have call successors, (0), 0 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 22:43:22,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:22,381 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:43:22,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:22,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:22,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1846383010, now seen corresponding path program 4 times [2023-11-06 22:43:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:22,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739032592] [2023-11-06 22:43:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:22,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:23,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:23,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561783500] [2023-11-06 22:43:23,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:43:23,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:23,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:23,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:43:25,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:43:25,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:25,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:43:25,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-06 22:43:25,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-06 22:43:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739032592] [2023-11-06 22:43:26,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561783500] [2023-11-06 22:43:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561783500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:26,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:26,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-06 22:43:26,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842976408] [2023-11-06 22:43:26,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:26,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:43:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:43:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:43:26,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 606 [2023-11-06 22:43:26,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 345 flow. Second operand has 24 states, 24 states have (on average 276.3333333333333) internal successors, (6632), 24 states have internal predecessors, (6632), 0 states have call successors, (0), 0 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 22:43:26,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:26,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 606 [2023-11-06 22:43:26,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:29,728 INFO L124 PetriNetUnfolderBase]: 5061/8337 cut-off events. [2023-11-06 22:43:29,729 INFO L125 PetriNetUnfolderBase]: For 3660/3660 co-relation queries the response was YES. [2023-11-06 22:43:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 8337 events. 5061/8337 cut-off events. For 3660/3660 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 50529 event pairs, 4144 based on Foata normal form. 48/6506 useless extension candidates. Maximal degree in co-relation 15699. Up to 7351 conditions per place. [2023-11-06 22:43:30,029 INFO L140 encePairwiseOnDemand]: 603/606 looper letters, 60 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2023-11-06 22:43:30,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 99 transitions, 585 flow [2023-11-06 22:43:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:43:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:43:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6692 transitions. [2023-11-06 22:43:30,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46012101210121015 [2023-11-06 22:43:30,058 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6692 transitions. [2023-11-06 22:43:30,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6692 transitions. [2023-11-06 22:43:30,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:30,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6692 transitions. [2023-11-06 22:43:30,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 278.8333333333333) internal successors, (6692), 24 states have internal predecessors, (6692), 0 states have call successors, (0), 0 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 22:43:30,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 606.0) internal successors, (15150), 25 states have internal predecessors, (15150), 0 states have call successors, (0), 0 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 22:43:30,121 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 606.0) internal successors, (15150), 25 states have internal predecessors, (15150), 0 states have call successors, (0), 0 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 22:43:30,121 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 345 flow. Second operand 24 states and 6692 transitions. [2023-11-06 22:43:30,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 99 transitions, 585 flow [2023-11-06 22:43:30,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 99 transitions, 577 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:43:30,130 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 579 flow [2023-11-06 22:43:30,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=579, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-11-06 22:43:30,131 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2023-11-06 22:43:30,131 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 579 flow [2023-11-06 22:43:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 276.3333333333333) internal successors, (6632), 24 states have internal predecessors, (6632), 0 states have call successors, (0), 0 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 22:43:30,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:30,135 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:43:30,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:30,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:43:30,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1271414622, now seen corresponding path program 5 times [2023-11-06 22:43:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:30,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283734517] [2023-11-06 22:43:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:32,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57421310] [2023-11-06 22:43:32,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:43:32,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:32,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:32,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019ac36c-008b-42b5-9011-3b6498be122d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process