./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/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_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/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_fda452a1-c326-48db-bf03-f3618c2e3020/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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:58:37,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:58:37,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:58:37,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:58:37,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:58:37,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:58:37,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:58:37,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:58:37,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:58:37,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:58:37,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:58:37,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:58:37,325 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:58:37,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:58:37,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:58:37,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:58:37,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:58:37,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:58:37,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:58:37,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:58:37,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:58:37,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:58:37,331 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:58:37,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:58:37,332 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:58:37,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:58:37,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:58:37,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:58:37,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:37,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:58:37,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:58:37,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:58:37,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:58:37,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:58:37,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:58:37,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:58:37,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:58:37,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:58:37,338 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:58:37,339 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_fda452a1-c326-48db-bf03-f3618c2e3020/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2023-11-06 22:58:37,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:58:37,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:58:37,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:58:37,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:58:37,665 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:58:37,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-06 22:58:40,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:58:41,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:58:41,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-06 22:58:41,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/data/7ca54bbc9/ec80c2c842e3494e8d14e476f5222c86/FLAGafb8d2915 [2023-11-06 22:58:41,122 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/data/7ca54bbc9/ec80c2c842e3494e8d14e476f5222c86 [2023-11-06 22:58:41,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:58:41,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:58:41,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:41,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:58:41,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:58:41,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c347de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41, skipping insertion in model container [2023-11-06 22:58:41,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:58:41,439 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_fda452a1-c326-48db-bf03-f3618c2e3020/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-11-06 22:58:41,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:41,721 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:58:41,734 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_fda452a1-c326-48db-bf03-f3618c2e3020/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-11-06 22:58:41,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:41,844 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:58:41,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41 WrapperNode [2023-11-06 22:58:41,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:41,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:41,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:58:41,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:58:41,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,895 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-11-06 22:58:41,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:41,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:58:41,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:58:41,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:58:41,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:58:41,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:58:41,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:58:41,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:58:41,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (1/1) ... [2023-11-06 22:58:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:41,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:41,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:58:41,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:58:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:58:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-06 22:58:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-06 22:58:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:58:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:58:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:58:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:58:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:58:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:58:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:58:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:58:42,013 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 22:58:42,217 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:58:42,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:58:42,550 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:58:42,570 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:58:42,570 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:58:42,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:42 BoogieIcfgContainer [2023-11-06 22:58:42,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:58:42,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:58:42,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:58:42,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:58:42,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:41" (1/3) ... [2023-11-06 22:58:42,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c1784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:42, skipping insertion in model container [2023-11-06 22:58:42,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:41" (2/3) ... [2023-11-06 22:58:42,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c1784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:42, skipping insertion in model container [2023-11-06 22:58:42,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:42" (3/3) ... [2023-11-06 22:58:42,588 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-06 22:58:42,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:58:42,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:58:42,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:58:42,610 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:58:42,729 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:58:42,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 140 transitions, 284 flow [2023-11-06 22:58:42,896 INFO L124 PetriNetUnfolderBase]: 10/139 cut-off events. [2023-11-06 22:58:42,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:42,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 10/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 248 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-06 22:58:42,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 140 transitions, 284 flow [2023-11-06 22:58:42,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 281 flow [2023-11-06 22:58:42,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:58:42,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 281 flow [2023-11-06 22:58:42,942 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 281 flow [2023-11-06 22:58:42,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 281 flow [2023-11-06 22:58:43,015 INFO L124 PetriNetUnfolderBase]: 10/139 cut-off events. [2023-11-06 22:58:43,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:43,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 10/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 248 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-06 22:58:43,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 4960 [2023-11-06 22:58:47,862 INFO L134 LiptonReduction]: Checked pairs total: 6489 [2023-11-06 22:58:47,862 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-11-06 22:58:47,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:58:47,885 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;@3f035c14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:58:47,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:58:47,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:58:47,892 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-11-06 22:58:47,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:47,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:47,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:58:47,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:47,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -747532320, now seen corresponding path program 1 times [2023-11-06 22:58:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692295637] [2023-11-06 22:58:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:48,497 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 22:58:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692295637] [2023-11-06 22:58:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692295637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369691685] [2023-11-06 22:58:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:48,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:48,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 279 [2023-11-06 22:58:48,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 22:58:48,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:48,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 279 [2023-11-06 22:58:48,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:48,866 INFO L124 PetriNetUnfolderBase]: 151/272 cut-off events. [2023-11-06 22:58:48,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:48,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 272 events. 151/272 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 851 event pairs, 54 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 539. Up to 193 conditions per place. [2023-11-06 22:58:48,879 INFO L140 encePairwiseOnDemand]: 271/279 looper letters, 43 selfloop transitions, 6 changer transitions 3/53 dead transitions. [2023-11-06 22:58:48,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 53 transitions, 213 flow [2023-11-06 22:58:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:58:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2023-11-06 22:58:48,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845878136200717 [2023-11-06 22:58:48,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2023-11-06 22:58:48,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2023-11-06 22:58:48,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:48,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2023-11-06 22:58:48,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 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 22:58:48,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 22:58:48,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 22:58:48,941 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 57 flow. Second operand 5 states and 676 transitions. [2023-11-06 22:58:48,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 53 transitions, 213 flow [2023-11-06 22:58:48,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 53 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:48,946 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 100 flow [2023-11-06 22:58:48,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-11-06 22:58:48,957 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-11-06 22:58:48,958 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 100 flow [2023-11-06 22:58:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 22:58:48,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:48,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:58:48,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:48,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1665264211, now seen corresponding path program 1 times [2023-11-06 22:58:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816537861] [2023-11-06 22:58:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:48,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:49,354 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 22:58:49,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:49,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816537861] [2023-11-06 22:58:49,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816537861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:49,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:49,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:49,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270535480] [2023-11-06 22:58:49,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:49,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:49,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 279 [2023-11-06 22:58:49,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 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 22:58:49,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:49,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 279 [2023-11-06 22:58:49,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:49,577 INFO L124 PetriNetUnfolderBase]: 225/411 cut-off events. [2023-11-06 22:58:49,577 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-06 22:58:49,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 411 events. 225/411 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1420 event pairs, 44 based on Foata normal form. 14/353 useless extension candidates. Maximal degree in co-relation 960. Up to 257 conditions per place. [2023-11-06 22:58:49,581 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 43 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 22:58:49,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 50 transitions, 258 flow [2023-11-06 22:58:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:58:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2023-11-06 22:58:49,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2023-11-06 22:58:49,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 531 transitions. [2023-11-06 22:58:49,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 531 transitions. [2023-11-06 22:58:49,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:49,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 531 transitions. [2023-11-06 22:58:49,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 22:58:49,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:58:49,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:58:49,595 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 100 flow. Second operand 4 states and 531 transitions. [2023-11-06 22:58:49,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 50 transitions, 258 flow [2023-11-06 22:58:49,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:58:49,603 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 137 flow [2023-11-06 22:58:49,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-11-06 22:58:49,605 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-11-06 22:58:49,605 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 137 flow [2023-11-06 22:58:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 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 22:58:49,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:49,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:58:49,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:49,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1176980845, now seen corresponding path program 2 times [2023-11-06 22:58:49,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:49,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078249930] [2023-11-06 22:58:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:49,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:49,894 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 22:58:49,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:49,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078249930] [2023-11-06 22:58:49,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078249930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:49,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:49,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303370489] [2023-11-06 22:58:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:49,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:49,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 279 [2023-11-06 22:58:49,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 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 22:58:49,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:49,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 279 [2023-11-06 22:58:49,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:50,033 INFO L124 PetriNetUnfolderBase]: 31/84 cut-off events. [2023-11-06 22:58:50,033 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-06 22:58:50,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 84 events. 31/84 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 1 based on Foata normal form. 14/90 useless extension candidates. Maximal degree in co-relation 218. Up to 53 conditions per place. [2023-11-06 22:58:50,034 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 21 selfloop transitions, 4 changer transitions 4/30 dead transitions. [2023-11-06 22:58:50,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 169 flow [2023-11-06 22:58:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:58:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-11-06 22:58:50,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614695340501792 [2023-11-06 22:58:50,038 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-11-06 22:58:50,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-11-06 22:58:50,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:50,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-11-06 22:58:50,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 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 22:58:50,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:58:50,047 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:58:50,047 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 137 flow. Second operand 4 states and 515 transitions. [2023-11-06 22:58:50,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 169 flow [2023-11-06 22:58:50,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:58:50,051 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 90 flow [2023-11-06 22:58:50,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-06 22:58:50,053 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-11-06 22:58:50,053 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 90 flow [2023-11-06 22:58:50,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 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 22:58:50,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:50,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:50,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:58:50,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:50,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1961430021, now seen corresponding path program 1 times [2023-11-06 22:58:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130004324] [2023-11-06 22:58:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:50,432 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 22:58:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:50,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130004324] [2023-11-06 22:58:50,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130004324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:50,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:50,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:58:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199759078] [2023-11-06 22:58:50,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:50,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:58:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:50,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:58:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:58:50,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 279 [2023-11-06 22:58:50,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 118.375) internal successors, (947), 8 states have internal predecessors, (947), 0 states have call successors, (0), 0 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 22:58:50,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:50,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 279 [2023-11-06 22:58:50,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:50,965 INFO L124 PetriNetUnfolderBase]: 25/84 cut-off events. [2023-11-06 22:58:50,965 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 22:58:50,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 84 events. 25/84 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 195 event pairs, 3 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 212. Up to 36 conditions per place. [2023-11-06 22:58:50,967 INFO L140 encePairwiseOnDemand]: 267/279 looper letters, 30 selfloop transitions, 12 changer transitions 1/44 dead transitions. [2023-11-06 22:58:50,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 232 flow [2023-11-06 22:58:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:58:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:58:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2023-11-06 22:58:50,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43620071684587813 [2023-11-06 22:58:50,973 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2023-11-06 22:58:50,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2023-11-06 22:58:50,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:50,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2023-11-06 22:58:50,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 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 22:58:50,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 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 22:58:50,988 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 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 22:58:50,989 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 90 flow. Second operand 10 states and 1217 transitions. [2023-11-06 22:58:50,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 232 flow [2023-11-06 22:58:50,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 210 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-06 22:58:50,992 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 160 flow [2023-11-06 22:58:50,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=160, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-06 22:58:50,993 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 17 predicate places. [2023-11-06 22:58:50,993 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 160 flow [2023-11-06 22:58:50,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.375) internal successors, (947), 8 states have internal predecessors, (947), 0 states have call successors, (0), 0 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 22:58:50,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:50,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:58:50,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:50,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash 674786199, now seen corresponding path program 1 times [2023-11-06 22:58:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:50,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624331080] [2023-11-06 22:58:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:50,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:51,099 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 22:58:51,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:51,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624331080] [2023-11-06 22:58:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624331080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:51,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723196059] [2023-11-06 22:58:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:51,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 279 [2023-11-06 22:58:51,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 22:58:51,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:51,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 279 [2023-11-06 22:58:51,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:51,272 INFO L124 PetriNetUnfolderBase]: 23/78 cut-off events. [2023-11-06 22:58:51,272 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:58:51,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 78 events. 23/78 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 5 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 228. Up to 51 conditions per place. [2023-11-06 22:58:51,274 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 25 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-06 22:58:51,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 226 flow [2023-11-06 22:58:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:58:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-11-06 22:58:51,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507168458781362 [2023-11-06 22:58:51,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-11-06 22:58:51,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-11-06 22:58:51,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:51,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-11-06 22:58:51,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 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 22:58:51,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:58:51,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 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 22:58:51,285 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 160 flow. Second operand 4 states and 503 transitions. [2023-11-06 22:58:51,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 226 flow [2023-11-06 22:58:51,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 214 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:51,288 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 160 flow [2023-11-06 22:58:51,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-11-06 22:58:51,290 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 18 predicate places. [2023-11-06 22:58:51,290 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 160 flow [2023-11-06 22:58:51,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 22:58:51,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:51,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:58:51,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:51,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1288559939, now seen corresponding path program 2 times [2023-11-06 22:58:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:51,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785597097] [2023-11-06 22:58:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:51,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785597097] [2023-11-06 22:58:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785597097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838240133] [2023-11-06 22:58:51,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:58:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:51,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:51,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:51,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:58:51,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:58:51,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:58:52,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:58:52,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:52,100 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-06 22:58:52,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:52,111 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 16 treesize of output 11 [2023-11-06 22:58:52,269 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 36 treesize of output 13 [2023-11-06 22:58:52,414 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 36 treesize of output 13 [2023-11-06 22:58:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:52,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:58:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838240133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:52,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2023-11-06 22:58:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119922976] [2023-11-06 22:58:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:58:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:58:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:58:52,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 279 [2023-11-06 22:58:52,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 118.6) internal successors, (1186), 10 states have internal predecessors, (1186), 0 states have call successors, (0), 0 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 22:58:52,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:52,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 279 [2023-11-06 22:58:52,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:53,158 INFO L124 PetriNetUnfolderBase]: 36/116 cut-off events. [2023-11-06 22:58:53,159 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-06 22:58:53,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 116 events. 36/116 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 330 event pairs, 5 based on Foata normal form. 2/118 useless extension candidates. Maximal degree in co-relation 353. Up to 41 conditions per place. [2023-11-06 22:58:53,160 INFO L140 encePairwiseOnDemand]: 269/279 looper letters, 36 selfloop transitions, 22 changer transitions 1/60 dead transitions. [2023-11-06 22:58:53,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 408 flow [2023-11-06 22:58:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:58:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:58:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1458 transitions. [2023-11-06 22:58:53,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2023-11-06 22:58:53,168 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1458 transitions. [2023-11-06 22:58:53,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1458 transitions. [2023-11-06 22:58:53,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1458 transitions. [2023-11-06 22:58:53,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 121.5) internal successors, (1458), 12 states have internal predecessors, (1458), 0 states have call successors, (0), 0 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 22:58:53,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 279.0) internal successors, (3627), 13 states have internal predecessors, (3627), 0 states have call successors, (0), 0 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 22:58:53,185 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 279.0) internal successors, (3627), 13 states have internal predecessors, (3627), 0 states have call successors, (0), 0 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 22:58:53,185 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 160 flow. Second operand 12 states and 1458 transitions. [2023-11-06 22:58:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 408 flow [2023-11-06 22:58:53,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:58:53,191 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 314 flow [2023-11-06 22:58:53,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2023-11-06 22:58:53,194 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-11-06 22:58:53,194 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 314 flow [2023-11-06 22:58:53,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.6) internal successors, (1186), 10 states have internal predecessors, (1186), 0 states have call successors, (0), 0 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 22:58:53,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:53,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:53,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:53,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:58:53,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:53,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -45737440, now seen corresponding path program 1 times [2023-11-06 22:58:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:53,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27320484] [2023-11-06 22:58:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27320484] [2023-11-06 22:58:53,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27320484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061630337] [2023-11-06 22:58:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:53,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:53,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:53,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:53,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:58:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:53,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 22:58:53,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:53,917 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-06 22:58:53,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:58:53,925 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 16 treesize of output 11 [2023-11-06 22:58:54,076 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 19 treesize of output 11 [2023-11-06 22:58:54,257 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 19 treesize of output 11 [2023-11-06 22:58:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:54,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061630337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:54,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-11-06 22:58:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392410474] [2023-11-06 22:58:54,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:54,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:58:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:58:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:58:55,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 279 [2023-11-06 22:58:55,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 314 flow. Second operand has 22 states, 22 states have (on average 117.4090909090909) internal successors, (2583), 22 states have internal predecessors, (2583), 0 states have call successors, (0), 0 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 22:58:55,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 279 [2023-11-06 22:58:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:56,240 INFO L124 PetriNetUnfolderBase]: 52/170 cut-off events. [2023-11-06 22:58:56,241 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-11-06 22:58:56,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 170 events. 52/170 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 490 event pairs, 0 based on Foata normal form. 9/179 useless extension candidates. Maximal degree in co-relation 573. Up to 41 conditions per place. [2023-11-06 22:58:56,243 INFO L140 encePairwiseOnDemand]: 265/279 looper letters, 37 selfloop transitions, 34 changer transitions 15/87 dead transitions. [2023-11-06 22:58:56,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 699 flow [2023-11-06 22:58:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:58:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:58:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2252 transitions. [2023-11-06 22:58:56,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248255046217695 [2023-11-06 22:58:56,252 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2252 transitions. [2023-11-06 22:58:56,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2252 transitions. [2023-11-06 22:58:56,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:56,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2252 transitions. [2023-11-06 22:58:56,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.52631578947368) internal successors, (2252), 19 states have internal predecessors, (2252), 0 states have call successors, (0), 0 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 22:58:56,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 279.0) internal successors, (5580), 20 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 22:58:56,275 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 279.0) internal successors, (5580), 20 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 22:58:56,275 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 314 flow. Second operand 19 states and 2252 transitions. [2023-11-06 22:58:56,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 699 flow [2023-11-06 22:58:56,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 87 transitions, 679 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-06 22:58:56,281 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 523 flow [2023-11-06 22:58:56,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=523, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2023-11-06 22:58:56,282 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2023-11-06 22:58:56,282 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 523 flow [2023-11-06 22:58:56,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 117.4090909090909) internal successors, (2583), 22 states have internal predecessors, (2583), 0 states have call successors, (0), 0 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 22:58:56,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:56,284 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:56,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:56,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:58:56,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-06 22:58:56,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1835753846, now seen corresponding path program 2 times [2023-11-06 22:58:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672278105] [2023-11-06 22:58:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:56,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672278105] [2023-11-06 22:58:57,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672278105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413460006] [2023-11-06 22:58:57,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:58:57,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:57,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:57,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:58:57,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:58:57,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:58:57,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-06 22:58:57,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:57,551 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 36 treesize of output 13 [2023-11-06 22:58:57,687 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 36 treesize of output 13 [2023-11-06 22:58:57,863 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 36 treesize of output 13 [2023-11-06 22:58:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:57,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:58,348 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-06 22:58:58,349 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 48 treesize of output 36 [2023-11-06 22:58:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:58,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413460006] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:58,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:58:58,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2023-11-06 22:58:58,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699110783] [2023-11-06 22:58:58,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:58:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:58:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:59:01,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 279 [2023-11-06 22:59:01,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 523 flow. Second operand has 35 states, 35 states have (on average 117.08571428571429) internal successors, (4098), 35 states have internal predecessors, (4098), 0 states have call successors, (0), 0 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 22:59:01,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:59:01,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 279 [2023-11-06 22:59:01,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:59:02,094 INFO L124 PetriNetUnfolderBase]: 73/236 cut-off events. [2023-11-06 22:59:02,094 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2023-11-06 22:59:02,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 236 events. 73/236 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 772 event pairs, 0 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 967. Up to 55 conditions per place. [2023-11-06 22:59:02,097 INFO L140 encePairwiseOnDemand]: 266/279 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2023-11-06 22:59:02,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 1019 flow [2023-11-06 22:59:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:59:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:59:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2233 transitions. [2023-11-06 22:59:02,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42124127523108845 [2023-11-06 22:59:02,107 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2233 transitions. [2023-11-06 22:59:02,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2233 transitions. [2023-11-06 22:59:02,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:59:02,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2233 transitions. [2023-11-06 22:59:02,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 117.52631578947368) internal successors, (2233), 19 states have internal predecessors, (2233), 0 states have call successors, (0), 0 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 22:59:02,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 279.0) internal successors, (5580), 20 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 22:59:02,128 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 279.0) internal successors, (5580), 20 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 22:59:02,128 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 523 flow. Second operand 19 states and 2233 transitions. [2023-11-06 22:59:02,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 1019 flow [2023-11-06 22:59:02,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 909 flow, removed 35 selfloop flow, removed 6 redundant places. [2023-11-06 22:59:02,136 INFO L231 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2023-11-06 22:59:02,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2023-11-06 22:59:02,140 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 63 predicate places. [2023-11-06 22:59:02,140 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2023-11-06 22:59:02,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 117.08571428571429) internal successors, (4098), 35 states have internal predecessors, (4098), 0 states have call successors, (0), 0 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 22:59:02,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-06 22:59:02,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-06 22:59:02,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-06 22:59:02,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-06 22:59:02,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-06 22:59:02,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:59:02,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:59:02,363 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1] [2023-11-06 22:59:02,368 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:59:02,368 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:59:02,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:59:02 BasicIcfg [2023-11-06 22:59:02,373 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:59:02,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:59:02,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:59:02,374 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:59:02,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:42" (3/4) ... [2023-11-06 22:59:02,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:59:02,380 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2023-11-06 22:59:02,387 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-06 22:59:02,388 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:59:02,388 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:59:02,388 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:59:02,437 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:59:02,437 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:59:02,437 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:59:02,438 INFO L158 Benchmark]: Toolchain (without parser) took 21307.94ms. Allocated memory was 127.9MB in the beginning and 255.9MB in the end (delta: 127.9MB). Free memory was 82.3MB in the beginning and 192.4MB in the end (delta: -110.1MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,438 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:59:02,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 711.58ms. Allocated memory is still 127.9MB. Free memory was 82.0MB in the beginning and 62.1MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.45ms. Allocated memory is still 127.9MB. Free memory was 62.1MB in the beginning and 59.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,439 INFO L158 Benchmark]: Boogie Preprocessor took 35.40ms. Allocated memory is still 127.9MB. Free memory was 59.7MB in the beginning and 57.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,440 INFO L158 Benchmark]: RCFGBuilder took 639.78ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 57.9MB in the beginning and 146.2MB in the end (delta: -88.3MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,440 INFO L158 Benchmark]: TraceAbstraction took 19797.13ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 145.3MB in the beginning and 196.3MB in the end (delta: -51.0MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,440 INFO L158 Benchmark]: Witness Printer took 64.12ms. Allocated memory is still 255.9MB. Free memory was 196.3MB in the beginning and 192.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:59:02,442 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 711.58ms. Allocated memory is still 127.9MB. Free memory was 82.0MB in the beginning and 62.1MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.45ms. Allocated memory is still 127.9MB. Free memory was 62.1MB in the beginning and 59.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.40ms. Allocated memory is still 127.9MB. Free memory was 59.7MB in the beginning and 57.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 639.78ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 57.9MB in the beginning and 146.2MB in the end (delta: -88.3MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19797.13ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 145.3MB in the beginning and 196.3MB in the end (delta: -51.0MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 64.12ms. Allocated memory is still 255.9MB. Free memory was 196.3MB in the beginning and 192.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 133 PlacesBefore, 25 PlacesAfterwards, 139 TransitionsBefore, 27 TransitionsAfterwards, 4960 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 4 ChoiceCompositions, 139 TotalNumberOfCompositions, 6489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4507, independent: 4350, independent conditional: 0, independent unconditional: 4350, dependent: 157, dependent conditional: 0, dependent unconditional: 157, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2824, independent: 2780, independent conditional: 0, independent unconditional: 2780, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4507, independent: 1570, independent conditional: 0, independent unconditional: 1570, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 2824, unknown conditional: 0, unknown unconditional: 2824] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 188 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.6s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2430 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2042 mSDsluCounter, 936 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 848 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8312 IncrementalHoareTripleChecker+Invalid, 8377 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 88 mSDtfsCounter, 8312 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=523occurred in iteration=7, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 218 ConstructedInterpolants, 10 QuantifiedInterpolants, 2341 SizeOfPredicates, 66 NumberOfNonLiveVariables, 664 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 55/67 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:59:02,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda452a1-c326-48db-bf03-f3618c2e3020/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE