./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/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_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/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_f815cbc0-d8e9-4656-b38f-26933e33d96e/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 cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:01:53,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:01:53,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:01:53,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:01:53,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:01:53,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:01:53,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:01:53,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:01:53,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:01:53,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:01:53,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:01:53,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:01:53,757 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:01:53,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:01:53,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:01:53,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:01:53,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:01:53,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:01:53,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:01:53,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:01:53,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:01:53,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:01:53,763 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:01:53,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:01:53,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:01:53,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:01:53,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:01:53,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:01:53,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:53,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:01:53,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:01:53,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:01:53,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:01:53,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:01:53,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:01:53,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:01:53,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:01:53,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:01:53,771 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:01:53,771 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_f815cbc0-d8e9-4656-b38f-26933e33d96e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2023-11-06 23:01:54,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:01:54,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:01:54,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:01:54,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:01:54,074 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:01:54,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2023-11-06 23:01:57,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:01:57,510 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:01:57,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2023-11-06 23:01:57,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/data/9d8fc3fec/f9bae8258a2b438d8b1bca2cff50b167/FLAGb3850b420 [2023-11-06 23:01:57,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/data/9d8fc3fec/f9bae8258a2b438d8b1bca2cff50b167 [2023-11-06 23:01:57,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:01:57,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:01:57,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:57,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:01:57,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:01:57,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:57" (1/1) ... [2023-11-06 23:01:57,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b136bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:57, skipping insertion in model container [2023-11-06 23:01:57,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:57" (1/1) ... [2023-11-06 23:01:57,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:01:57,773 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_f815cbc0-d8e9-4656-b38f-26933e33d96e/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2023-11-06 23:01:58,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:58,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:01:58,061 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_f815cbc0-d8e9-4656-b38f-26933e33d96e/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2023-11-06 23:01:58,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:58,129 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:01:58,129 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:01:58,137 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:01:58,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58 WrapperNode [2023-11-06 23:01:58,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:58,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:58,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:01:58,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:01:58,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,184 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-06 23:01:58,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:58,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:01:58,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:01:58,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:01:58,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:01:58,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:01:58,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:01:58,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:01:58,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:58,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:58,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:01:58,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:01:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:01:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:01:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:01:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:01:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:01:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 23:01:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 23:01:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 23:01:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 23:01:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 23:01:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 23:01:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:01:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:01:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:01:58,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:01:58,368 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 23:01:58,510 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:01:58,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:01:58,747 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:01:58,755 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:01:58,758 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:01:58,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:58 BoogieIcfgContainer [2023-11-06 23:01:58,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:01:58,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:01:58,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:01:58,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:01:58,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:01:57" (1/3) ... [2023-11-06 23:01:58,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e8b244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:58, skipping insertion in model container [2023-11-06 23:01:58,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58" (2/3) ... [2023-11-06 23:01:58,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e8b244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:58, skipping insertion in model container [2023-11-06 23:01:58,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:58" (3/3) ... [2023-11-06 23:01:58,778 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2023-11-06 23:01:58,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:01:58,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:01:58,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:01:58,802 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:01:58,891 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:01:58,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 188 flow [2023-11-06 23:01:58,987 INFO L124 PetriNetUnfolderBase]: 2/85 cut-off events. [2023-11-06 23:01:58,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:58,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 85 events. 2/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 23:01:58,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 88 transitions, 188 flow [2023-11-06 23:01:58,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-11-06 23:01:59,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:01:59,015 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-11-06 23:01:59,018 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-11-06 23:01:59,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-11-06 23:01:59,047 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-11-06 23:01:59,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:59,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-06 23:01:59,050 INFO L119 LiptonReduction]: Number of co-enabled transitions 1080 [2023-11-06 23:02:01,348 INFO L134 LiptonReduction]: Checked pairs total: 1902 [2023-11-06 23:02:01,348 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-11-06 23:02:01,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:02:01,386 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;@2419227a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:02:01,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 23:02:01,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:02:01,411 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-06 23:02:01,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:02:01,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:01,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:01,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:01,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -966004697, now seen corresponding path program 1 times [2023-11-06 23:02:01,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:01,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503452299] [2023-11-06 23:02:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:02,069 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 23:02:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:02,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503452299] [2023-11-06 23:02:02,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503452299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:02,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:02,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:02:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933879357] [2023-11-06 23:02:02,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:02,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:02,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:02,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 23:02:02,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 23:02:02,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:02,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 23:02:02,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:02,354 INFO L124 PetriNetUnfolderBase]: 416/720 cut-off events. [2023-11-06 23:02:02,355 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 23:02:02,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 720 events. 416/720 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3589 event pairs, 159 based on Foata normal form. 43/763 useless extension candidates. Maximal degree in co-relation 1442. Up to 362 conditions per place. [2023-11-06 23:02:02,365 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-11-06 23:02:02,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-11-06 23:02:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-11-06 23:02:02,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804195804195804 [2023-11-06 23:02:02,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-11-06 23:02:02,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-11-06 23:02:02,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:02,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-11-06 23:02:02,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 23:02:02,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:02:02,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:02:02,411 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 249 transitions. [2023-11-06 23:02:02,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-11-06 23:02:02,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:02:02,416 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-06 23:02:02,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-06 23:02:02,423 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-06 23:02:02,423 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-06 23:02:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 23:02:02,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:02,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:02,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:02:02,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:02,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 118624918, now seen corresponding path program 1 times [2023-11-06 23:02:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:02,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071135705] [2023-11-06 23:02:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:02,643 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 23:02:02,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071135705] [2023-11-06 23:02:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071135705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:02,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:02,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078808638] [2023-11-06 23:02:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:02,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:02,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 23:02:02,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 23:02:02,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:02,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 23:02:02,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:02,852 INFO L124 PetriNetUnfolderBase]: 391/673 cut-off events. [2023-11-06 23:02:02,852 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-06 23:02:02,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 673 events. 391/673 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3288 event pairs, 51 based on Foata normal form. 8/680 useless extension candidates. Maximal degree in co-relation 1824. Up to 307 conditions per place. [2023-11-06 23:02:02,861 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-06 23:02:02,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 212 flow [2023-11-06 23:02:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-11-06 23:02:02,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5716783216783217 [2023-11-06 23:02:02,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-11-06 23:02:02,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-11-06 23:02:02,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:02,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-11-06 23:02:02,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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 23:02:02,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:02,879 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:02,879 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 327 transitions. [2023-11-06 23:02:02,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 212 flow [2023-11-06 23:02:02,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:02,887 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-11-06 23:02:02,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-11-06 23:02:02,889 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-06 23:02:02,895 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-11-06 23:02:02,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 23:02:02,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:02,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:02:02,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:02,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash 118624887, now seen corresponding path program 1 times [2023-11-06 23:02:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398630828] [2023-11-06 23:02:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:02,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:03,080 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 23:02:03,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398630828] [2023-11-06 23:02:03,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398630828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:03,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:03,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:03,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886478456] [2023-11-06 23:02:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:03,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:03,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:03,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 23:02:03,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 23:02:03,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:03,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 23:02:03,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:03,256 INFO L124 PetriNetUnfolderBase]: 365/640 cut-off events. [2023-11-06 23:02:03,256 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2023-11-06 23:02:03,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 640 events. 365/640 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3138 event pairs, 36 based on Foata normal form. 4/644 useless extension candidates. Maximal degree in co-relation 1890. Up to 303 conditions per place. [2023-11-06 23:02:03,264 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2023-11-06 23:02:03,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 292 flow [2023-11-06 23:02:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-11-06 23:02:03,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-11-06 23:02:03,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-11-06 23:02:03,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-11-06 23:02:03,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:03,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-11-06 23:02:03,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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 23:02:03,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:03,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:03,272 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 4 states and 330 transitions. [2023-11-06 23:02:03,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 292 flow [2023-11-06 23:02:03,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:03,279 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 224 flow [2023-11-06 23:02:03,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-11-06 23:02:03,281 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-06 23:02:03,284 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 224 flow [2023-11-06 23:02:03,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 23:02:03,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:03,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:02:03,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:03,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash -617595416, now seen corresponding path program 1 times [2023-11-06 23:02:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:03,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406900577] [2023-11-06 23:02:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:03,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:03,472 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 23:02:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406900577] [2023-11-06 23:02:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406900577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:03,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915283692] [2023-11-06 23:02:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:03,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:03,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 143 [2023-11-06 23:02:03,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:03,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 143 [2023-11-06 23:02:03,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:03,731 INFO L124 PetriNetUnfolderBase]: 605/975 cut-off events. [2023-11-06 23:02:03,731 INFO L125 PetriNetUnfolderBase]: For 2446/2446 co-relation queries the response was YES. [2023-11-06 23:02:03,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 975 events. 605/975 cut-off events. For 2446/2446 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4342 event pairs, 93 based on Foata normal form. 12/987 useless extension candidates. Maximal degree in co-relation 3481. Up to 360 conditions per place. [2023-11-06 23:02:03,740 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 41 selfloop transitions, 18 changer transitions 10/69 dead transitions. [2023-11-06 23:02:03,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 582 flow [2023-11-06 23:02:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:02:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:02:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 408 transitions. [2023-11-06 23:02:03,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706293706293706 [2023-11-06 23:02:03,743 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 408 transitions. [2023-11-06 23:02:03,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 408 transitions. [2023-11-06 23:02:03,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:03,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 408 transitions. [2023-11-06 23:02:03,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 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 23:02:03,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 23:02:03,748 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 23:02:03,749 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 224 flow. Second operand 5 states and 408 transitions. [2023-11-06 23:02:03,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 582 flow [2023-11-06 23:02:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 582 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:02:03,764 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 352 flow [2023-11-06 23:02:03,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-06 23:02:03,766 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-06 23:02:03,767 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 352 flow [2023-11-06 23:02:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:03,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:03,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:02:03,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:03,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash -590380826, now seen corresponding path program 2 times [2023-11-06 23:02:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:03,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146592644] [2023-11-06 23:02:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:03,878 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 23:02:03,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146592644] [2023-11-06 23:02:03,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146592644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:03,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:03,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304262827] [2023-11-06 23:02:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:03,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:03,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:03,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 143 [2023-11-06 23:02:03,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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 23:02:03,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:03,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 143 [2023-11-06 23:02:03,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:04,058 INFO L124 PetriNetUnfolderBase]: 450/809 cut-off events. [2023-11-06 23:02:04,059 INFO L125 PetriNetUnfolderBase]: For 3456/3459 co-relation queries the response was YES. [2023-11-06 23:02:04,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 809 events. 450/809 cut-off events. For 3456/3459 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4224 event pairs, 110 based on Foata normal form. 38/813 useless extension candidates. Maximal degree in co-relation 2991. Up to 310 conditions per place. [2023-11-06 23:02:04,067 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 27 selfloop transitions, 5 changer transitions 15/53 dead transitions. [2023-11-06 23:02:04,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 491 flow [2023-11-06 23:02:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-11-06 23:02:04,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031468531468531 [2023-11-06 23:02:04,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-11-06 23:02:04,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-11-06 23:02:04,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:04,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-11-06 23:02:04,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 23:02:04,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:04,074 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:04,075 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 352 flow. Second operand 4 states and 345 transitions. [2023-11-06 23:02:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 491 flow [2023-11-06 23:02:04,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 464 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:04,088 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 213 flow [2023-11-06 23:02:04,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-11-06 23:02:04,089 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-06 23:02:04,089 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 213 flow [2023-11-06 23:02:04,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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 23:02:04,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:04,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:04,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:02:04,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:04,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2115184944, now seen corresponding path program 1 times [2023-11-06 23:02:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906316943] [2023-11-06 23:02:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:04,214 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 23:02:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:04,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906316943] [2023-11-06 23:02:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906316943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:04,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:04,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621893044] [2023-11-06 23:02:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:02:04,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 23:02:04,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 23:02:04,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:04,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 23:02:04,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:04,318 INFO L124 PetriNetUnfolderBase]: 205/361 cut-off events. [2023-11-06 23:02:04,319 INFO L125 PetriNetUnfolderBase]: For 961/961 co-relation queries the response was YES. [2023-11-06 23:02:04,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 361 events. 205/361 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1311 event pairs, 48 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1415. Up to 196 conditions per place. [2023-11-06 23:02:04,323 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 19 selfloop transitions, 10 changer transitions 4/35 dead transitions. [2023-11-06 23:02:04,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 329 flow [2023-11-06 23:02:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-11-06 23:02:04,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2023-11-06 23:02:04,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-11-06 23:02:04,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-11-06 23:02:04,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:04,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-11-06 23:02:04,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 23:02:04,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:04,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:04,331 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 213 flow. Second operand 4 states and 321 transitions. [2023-11-06 23:02:04,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 329 flow [2023-11-06 23:02:04,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 246 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-11-06 23:02:04,336 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 179 flow [2023-11-06 23:02:04,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2023-11-06 23:02:04,338 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-06 23:02:04,338 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 179 flow [2023-11-06 23:02:04,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 23:02:04,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:04,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:02:04,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:04,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1146245544, now seen corresponding path program 1 times [2023-11-06 23:02:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:04,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990735887] [2023-11-06 23:02:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:04,503 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 23:02:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990735887] [2023-11-06 23:02:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990735887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:04,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306847230] [2023-11-06 23:02:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:02:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:02:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:02:04,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 23:02:04,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 23:02:04,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:04,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 23:02:04,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:04,703 INFO L124 PetriNetUnfolderBase]: 239/436 cut-off events. [2023-11-06 23:02:04,704 INFO L125 PetriNetUnfolderBase]: For 750/750 co-relation queries the response was YES. [2023-11-06 23:02:04,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 436 events. 239/436 cut-off events. For 750/750 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1760 event pairs, 56 based on Foata normal form. 6/442 useless extension candidates. Maximal degree in co-relation 1476. Up to 118 conditions per place. [2023-11-06 23:02:04,708 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 19 selfloop transitions, 8 changer transitions 20/49 dead transitions. [2023-11-06 23:02:04,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 362 flow [2023-11-06 23:02:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:02:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:02:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2023-11-06 23:02:04,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5524475524475524 [2023-11-06 23:02:04,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 553 transitions. [2023-11-06 23:02:04,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 553 transitions. [2023-11-06 23:02:04,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:04,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 553 transitions. [2023-11-06 23:02:04,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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 23:02:04,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 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 23:02:04,720 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 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 23:02:04,720 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 179 flow. Second operand 7 states and 553 transitions. [2023-11-06 23:02:04,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 362 flow [2023-11-06 23:02:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 351 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:04,726 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 160 flow [2023-11-06 23:02:04,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2023-11-06 23:02:04,727 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-11-06 23:02:04,727 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 160 flow [2023-11-06 23:02:04,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 23:02:04,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:04,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:04,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:02:04,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:02:04,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1905503314, now seen corresponding path program 2 times [2023-11-06 23:02:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:04,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717492240] [2023-11-06 23:02:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:04,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717492240] [2023-11-06 23:02:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717492240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645473901] [2023-11-06 23:02:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:04,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:02:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:02:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:02:04,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-11-06 23:02:04,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 23:02:04,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:04,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-11-06 23:02:04,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:04,973 INFO L124 PetriNetUnfolderBase]: 105/192 cut-off events. [2023-11-06 23:02:04,974 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES. [2023-11-06 23:02:04,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 192 events. 105/192 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 596 event pairs, 29 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 680. Up to 168 conditions per place. [2023-11-06 23:02:04,975 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-06 23:02:04,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 25 transitions, 204 flow [2023-11-06 23:02:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:02:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-11-06 23:02:04,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437062937062938 [2023-11-06 23:02:04,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-11-06 23:02:04,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-11-06 23:02:04,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:04,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-11-06 23:02:04,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 23:02:04,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:04,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:02:04,983 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 160 flow. Second operand 4 states and 311 transitions. [2023-11-06 23:02:04,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 25 transitions, 204 flow [2023-11-06 23:02:04,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 173 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 23:02:04,986 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-11-06 23:02:04,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-11-06 23:02:04,987 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-11-06 23:02:04,987 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-11-06 23:02:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 23:02:04,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 23:02:04,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 23:02:04,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 23:02:04,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 23:02:04,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:02:04,993 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-11-06 23:02:04,997 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:02:04,998 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:02:05,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:02:05 BasicIcfg [2023-11-06 23:02:05,003 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:02:05,004 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:02:05,004 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:02:05,004 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:02:05,005 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:58" (3/4) ... [2023-11-06 23:02:05,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:02:05,013 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 23:02:05,014 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 23:02:05,014 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 23:02:05,020 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 23:02:05,020 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:02:05,021 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:02:05,021 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:02:05,093 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:02:05,095 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:02:05,095 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:02:05,096 INFO L158 Benchmark]: Toolchain (without parser) took 7542.62ms. Allocated memory was 144.7MB in the beginning and 222.3MB in the end (delta: 77.6MB). Free memory was 100.2MB in the beginning and 113.3MB in the end (delta: -13.1MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,096 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 52.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:05,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.61ms. Allocated memory is still 144.7MB. Free memory was 99.9MB in the beginning and 79.6MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.92ms. Allocated memory is still 144.7MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,097 INFO L158 Benchmark]: Boogie Preprocessor took 82.58ms. Allocated memory is still 144.7MB. Free memory was 77.5MB in the beginning and 115.5MB in the end (delta: -38.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,097 INFO L158 Benchmark]: RCFGBuilder took 495.22ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 101.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,098 INFO L158 Benchmark]: TraceAbstraction took 6236.48ms. Allocated memory was 144.7MB in the beginning and 222.3MB in the end (delta: 77.6MB). Free memory was 100.9MB in the beginning and 116.5MB in the end (delta: -15.6MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,098 INFO L158 Benchmark]: Witness Printer took 90.95ms. Allocated memory is still 222.3MB. Free memory was 116.5MB in the beginning and 113.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:05,100 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 52.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.61ms. Allocated memory is still 144.7MB. Free memory was 99.9MB in the beginning and 79.6MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.92ms. Allocated memory is still 144.7MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.58ms. Allocated memory is still 144.7MB. Free memory was 77.5MB in the beginning and 115.5MB in the end (delta: -38.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * RCFGBuilder took 495.22ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 101.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6236.48ms. Allocated memory was 144.7MB in the beginning and 222.3MB in the end (delta: 77.6MB). Free memory was 100.9MB in the beginning and 116.5MB in the end (delta: -15.6MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. * Witness Printer took 90.95ms. Allocated memory is still 222.3MB. Free memory was 116.5MB in the beginning and 113.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1098, independent: 1021, independent conditional: 0, independent unconditional: 1021, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 584, independent: 555, independent conditional: 0, independent unconditional: 555, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1098, independent: 466, independent conditional: 0, independent unconditional: 466, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 584, unknown conditional: 0, unknown unconditional: 584] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 7 procedures, 111 locations, 4 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: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 396 IncrementalHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 44 mSDtfsCounter, 396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=4, InterpolantAutomatonStates: 35, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:02:05,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f815cbc0-d8e9-4656-b38f-26933e33d96e/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