./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_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_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/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_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/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_1d4f043c-6403-4120-8368-85a2ed3422d0/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 0cdc4de0b080284406e5a223cc9cce4b369430ad26c4d0f5d169e90b4fc0e513 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:09:01,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:09:01,149 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:09:01,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:09:01,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:09:01,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:09:01,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:09:01,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:09:01,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:09:01,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:09:01,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:09:01,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:09:01,208 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:09:01,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:09:01,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:09:01,210 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:09:01,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:09:01,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:09:01,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:09:01,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:09:01,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:09:01,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:09:01,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:09:01,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:09:01,215 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:09:01,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:09:01,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:09:01,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:09:01,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:01,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:09:01,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:09:01,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:09:01,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:09:01,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:09:01,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:09:01,221 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:09:01,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:09:01,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:09:01,222 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:09:01,223 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_1d4f043c-6403-4120-8368-85a2ed3422d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdc4de0b080284406e5a223cc9cce4b369430ad26c4d0f5d169e90b4fc0e513 [2023-11-06 23:09:01,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:09:01,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:09:01,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:09:01,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:09:01,617 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:09:01,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe010_tso.i [2023-11-06 23:09:04,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:09:05,212 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:09:05,213 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/sv-benchmarks/c/pthread-wmm/safe010_tso.i [2023-11-06 23:09:05,233 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/data/21341273d/51a85b785c2a44858e25221363f9d06e/FLAG6f78a77e3 [2023-11-06 23:09:05,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/data/21341273d/51a85b785c2a44858e25221363f9d06e [2023-11-06 23:09:05,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:09:05,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:09:05,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:05,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:09:05,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:09:05,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:05,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5997eaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05, skipping insertion in model container [2023-11-06 23:09:05,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:05,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:09:05,541 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_1d4f043c-6403-4120-8368-85a2ed3422d0/sv-benchmarks/c/pthread-wmm/safe010_tso.i[945,958] [2023-11-06 23:09:05,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:05,860 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:09:05,876 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_1d4f043c-6403-4120-8368-85a2ed3422d0/sv-benchmarks/c/pthread-wmm/safe010_tso.i[945,958] [2023-11-06 23:09:05,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:05,959 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:09:05,959 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:09:05,967 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:09:05,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05 WrapperNode [2023-11-06 23:09:05,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:05,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:05,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:09:05,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:09:05,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,045 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-06 23:09:06,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:06,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:09:06,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:09:06,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:09:06,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:09:06,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:09:06,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:09:06,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:09:06,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (1/1) ... [2023-11-06 23:09:06,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:06,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:09:06,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:09:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:09:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:09:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:09:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:09:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:09:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 23:09:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 23:09:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 23:09:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 23:09:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:09:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:09:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:09:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:09:06,221 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 23:09:06,415 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:09:06,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:09:06,608 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:09:06,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:09:06,616 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:09:06,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:06 BoogieIcfgContainer [2023-11-06 23:09:06,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:09:06,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:09:06,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:09:06,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:09:06,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:09:05" (1/3) ... [2023-11-06 23:09:06,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:06, skipping insertion in model container [2023-11-06 23:09:06,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:05" (2/3) ... [2023-11-06 23:09:06,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:06, skipping insertion in model container [2023-11-06 23:09:06,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:06" (3/3) ... [2023-11-06 23:09:06,630 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2023-11-06 23:09:06,640 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:09:06,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:09:06,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:09:06,652 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:09:06,705 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:09:06,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 70 transitions, 148 flow [2023-11-06 23:09:06,798 INFO L124 PetriNetUnfolderBase]: 2/68 cut-off events. [2023-11-06 23:09:06,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:09:06,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-06 23:09:06,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 70 transitions, 148 flow [2023-11-06 23:09:06,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-11-06 23:09:06,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:09:06,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-11-06 23:09:06,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-11-06 23:09:06,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-11-06 23:09:06,852 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2023-11-06 23:09:06,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:09:06,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-06 23:09:06,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 564 [2023-11-06 23:09:09,050 INFO L134 LiptonReduction]: Checked pairs total: 1156 [2023-11-06 23:09:09,050 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-11-06 23:09:09,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:09:09,083 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;@1dfdd2cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:09:09,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 23:09:09,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:09:09,089 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-06 23:09:09,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:09:09,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:09,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:09:09,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:09:09,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1476337940, now seen corresponding path program 1 times [2023-11-06 23:09:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053401243] [2023-11-06 23:09:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:09,615 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 23:09:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053401243] [2023-11-06 23:09:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053401243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:09,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:09,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:09:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487812477] [2023-11-06 23:09:09,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:09,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:09,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:09,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 119 [2023-11-06 23:09:09,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 23:09:09,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:09,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 119 [2023-11-06 23:09:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:09,794 INFO L124 PetriNetUnfolderBase]: 44/106 cut-off events. [2023-11-06 23:09:09,795 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:09:09,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 44/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 400 event pairs, 16 based on Foata normal form. 7/113 useless extension candidates. Maximal degree in co-relation 206. Up to 64 conditions per place. [2023-11-06 23:09:09,802 INFO L140 encePairwiseOnDemand]: 113/119 looper letters, 14 selfloop transitions, 4 changer transitions 0/19 dead transitions. [2023-11-06 23:09:09,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 83 flow [2023-11-06 23:09:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-06 23:09:09,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630252100840336 [2023-11-06 23:09:09,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-06 23:09:09,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-06 23:09:09,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:09,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-06 23:09:09,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 23:09:09,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 23:09:09,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 23:09:09,849 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 201 transitions. [2023-11-06 23:09:09,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 83 flow [2023-11-06 23:09:09,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:09,854 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 50 flow [2023-11-06 23:09:09,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-06 23:09:09,861 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-11-06 23:09:09,861 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 50 flow [2023-11-06 23:09:09,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 23:09:09,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:09,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:09,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:09:09,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:09:09,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1478163519, now seen corresponding path program 1 times [2023-11-06 23:09:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430128535] [2023-11-06 23:09:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:10,032 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 23:09:10,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:10,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430128535] [2023-11-06 23:09:10,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430128535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:10,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:10,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:10,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715092874] [2023-11-06 23:09:10,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:10,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 119 [2023-11-06 23:09:10,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 23:09:10,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:10,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 119 [2023-11-06 23:09:10,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:10,135 INFO L124 PetriNetUnfolderBase]: 41/98 cut-off events. [2023-11-06 23:09:10,136 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 23:09:10,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 98 events. 41/98 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 365 event pairs, 10 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 240. Up to 45 conditions per place. [2023-11-06 23:09:10,140 INFO L140 encePairwiseOnDemand]: 114/119 looper letters, 14 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-11-06 23:09:10,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 103 flow [2023-11-06 23:09:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:09:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2023-11-06 23:09:10,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2023-11-06 23:09:10,150 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 259 transitions. [2023-11-06 23:09:10,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 259 transitions. [2023-11-06 23:09:10,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:10,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 259 transitions. [2023-11-06 23:09:10,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 23:09:10,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 23:09:10,161 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 23:09:10,161 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 50 flow. Second operand 4 states and 259 transitions. [2023-11-06 23:09:10,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 103 flow [2023-11-06 23:09:10,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:10,164 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 69 flow [2023-11-06 23:09:10,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-11-06 23:09:10,166 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-11-06 23:09:10,166 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 69 flow [2023-11-06 23:09:10,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 23:09:10,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:10,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:10,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:09:10,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:09:10,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1478163178, now seen corresponding path program 1 times [2023-11-06 23:09:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003560543] [2023-11-06 23:09:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:10,347 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 23:09:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003560543] [2023-11-06 23:09:10,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003560543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:10,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:10,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:10,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5114196] [2023-11-06 23:09:10,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:10,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:10,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:10,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:10,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:10,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 119 [2023-11-06 23:09:10,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 23:09:10,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:10,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 119 [2023-11-06 23:09:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:10,473 INFO L124 PetriNetUnfolderBase]: 67/141 cut-off events. [2023-11-06 23:09:10,474 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-11-06 23:09:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 141 events. 67/141 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 481 event pairs, 9 based on Foata normal form. 4/145 useless extension candidates. Maximal degree in co-relation 384. Up to 55 conditions per place. [2023-11-06 23:09:10,479 INFO L140 encePairwiseOnDemand]: 113/119 looper letters, 21 selfloop transitions, 8 changer transitions 3/32 dead transitions. [2023-11-06 23:09:10,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 195 flow [2023-11-06 23:09:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:09:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 322 transitions. [2023-11-06 23:09:10,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2023-11-06 23:09:10,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 322 transitions. [2023-11-06 23:09:10,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 322 transitions. [2023-11-06 23:09:10,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:10,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 322 transitions. [2023-11-06 23:09:10,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.4) internal successors, (322), 5 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 23:09:10,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 23:09:10,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 23:09:10,489 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 69 flow. Second operand 5 states and 322 transitions. [2023-11-06 23:09:10,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 195 flow [2023-11-06 23:09:10,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:09:10,494 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 112 flow [2023-11-06 23:09:10,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-11-06 23:09:10,496 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2023-11-06 23:09:10,503 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 112 flow [2023-11-06 23:09:10,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 23:09:10,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:10,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:10,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:09:10,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:09:10,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1421582335, now seen corresponding path program 1 times [2023-11-06 23:09:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:10,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781464260] [2023-11-06 23:09:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:10,629 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 23:09:10,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:10,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781464260] [2023-11-06 23:09:10,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781464260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:10,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:10,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:10,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161597986] [2023-11-06 23:09:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:10,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:10,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 119 [2023-11-06 23:09:10,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 23:09:10,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:10,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 119 [2023-11-06 23:09:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:10,708 INFO L124 PetriNetUnfolderBase]: 56/127 cut-off events. [2023-11-06 23:09:10,709 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-11-06 23:09:10,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 127 events. 56/127 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 442 event pairs, 17 based on Foata normal form. 9/136 useless extension candidates. Maximal degree in co-relation 392. Up to 56 conditions per place. [2023-11-06 23:09:10,710 INFO L140 encePairwiseOnDemand]: 114/119 looper letters, 14 selfloop transitions, 4 changer transitions 10/28 dead transitions. [2023-11-06 23:09:10,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 197 flow [2023-11-06 23:09:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:09:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2023-11-06 23:09:10,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310924369747899 [2023-11-06 23:09:10,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 316 transitions. [2023-11-06 23:09:10,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 316 transitions. [2023-11-06 23:09:10,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:10,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 316 transitions. [2023-11-06 23:09:10,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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 23:09:10,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 23:09:10,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 23:09:10,717 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 112 flow. Second operand 5 states and 316 transitions. [2023-11-06 23:09:10,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 197 flow [2023-11-06 23:09:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 192 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:09:10,721 INFO L231 Difference]: Finished difference. Result has 34 places, 12 transitions, 78 flow [2023-11-06 23:09:10,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=12} [2023-11-06 23:09:10,722 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2023-11-06 23:09:10,723 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 12 transitions, 78 flow [2023-11-06 23:09:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 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 23:09:10,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:10,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:09:10,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:09:10,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash -528328845, now seen corresponding path program 1 times [2023-11-06 23:09:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:10,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524189783] [2023-11-06 23:09:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:10,878 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 23:09:10,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:10,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524189783] [2023-11-06 23:09:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524189783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:10,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:10,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:09:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36332685] [2023-11-06 23:09:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:10,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:09:10,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:09:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:09:10,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 119 [2023-11-06 23:09:10,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 12 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 23:09:10,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:10,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 119 [2023-11-06 23:09:10,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:10,921 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-11-06 23:09:10,921 INFO L125 PetriNetUnfolderBase]: For 60/61 co-relation queries the response was YES. [2023-11-06 23:09:10,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 33 events. 9/33 cut-off events. For 60/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 3 based on Foata normal form. 3/35 useless extension candidates. Maximal degree in co-relation 112. Up to 20 conditions per place. [2023-11-06 23:09:10,922 INFO L140 encePairwiseOnDemand]: 115/119 looper letters, 11 selfloop transitions, 2 changer transitions 2/17 dead transitions. [2023-11-06 23:09:10,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 17 transitions, 128 flow [2023-11-06 23:09:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:09:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:09:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-06 23:09:10,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2023-11-06 23:09:10,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-06 23:09:10,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-06 23:09:10,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:10,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-06 23:09:10,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 23:09:10,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 23:09:10,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 23:09:10,929 INFO L175 Difference]: Start difference. First operand has 34 places, 12 transitions, 78 flow. Second operand 3 states and 202 transitions. [2023-11-06 23:09:10,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 17 transitions, 128 flow [2023-11-06 23:09:10,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 86 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-11-06 23:09:10,932 INFO L231 Difference]: Finished difference. Result has 26 places, 12 transitions, 52 flow [2023-11-06 23:09:10,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=26, PETRI_TRANSITIONS=12} [2023-11-06 23:09:10,933 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-11-06 23:09:10,933 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 52 flow [2023-11-06 23:09:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 23:09:10,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:09:10,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:09:10,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 23:09:10,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 752480492, now seen corresponding path program 1 times [2023-11-06 23:09:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250762798] [2023-11-06 23:09:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:11,058 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 23:09:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250762798] [2023-11-06 23:09:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250762798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:11,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752528758] [2023-11-06 23:09:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:11,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:11,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 119 [2023-11-06 23:09:11,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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 23:09:11,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:09:11,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 119 [2023-11-06 23:09:11,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:09:11,097 INFO L124 PetriNetUnfolderBase]: 5/21 cut-off events. [2023-11-06 23:09:11,097 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-06 23:09:11,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 21 events. 5/21 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 2 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 61. Up to 10 conditions per place. [2023-11-06 23:09:11,097 INFO L140 encePairwiseOnDemand]: 115/119 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-11-06 23:09:11,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 14 transitions, 80 flow [2023-11-06 23:09:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:09:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2023-11-06 23:09:11,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483193277310925 [2023-11-06 23:09:11,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2023-11-06 23:09:11,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2023-11-06 23:09:11,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:09:11,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2023-11-06 23:09:11,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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 23:09:11,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 23:09:11,104 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 23:09:11,104 INFO L175 Difference]: Start difference. First operand has 26 places, 12 transitions, 52 flow. Second operand 4 states and 261 transitions. [2023-11-06 23:09:11,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 14 transitions, 80 flow [2023-11-06 23:09:11,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 14 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:09:11,106 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-11-06 23:09:11,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-11-06 23:09:11,107 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-11-06 23:09:11,107 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-11-06 23:09:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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 23:09:11,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 23:09:11,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 23:09:11,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 23:09:11,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:09:11,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-06 23:09:11,116 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:09:11,116 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:09:11,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:09:11 BasicIcfg [2023-11-06 23:09:11,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:09:11,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:09:11,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:09:11,122 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:09:11,123 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:06" (3/4) ... [2023-11-06 23:09:11,125 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:09:11,130 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 23:09:11,131 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 23:09:11,136 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-06 23:09:11,136 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:09:11,136 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:09:11,137 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:09:11,197 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:09:11,197 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:09:11,198 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:09:11,198 INFO L158 Benchmark]: Toolchain (without parser) took 5939.08ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 151.4MB in the beginning and 142.3MB in the end (delta: 9.2MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,199 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 190.8MB. Free memory was 166.0MB in the beginning and 165.7MB in the end (delta: 268.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:09:11,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 707.49ms. Allocated memory is still 190.8MB. Free memory was 151.0MB in the beginning and 131.3MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.36ms. Allocated memory is still 190.8MB. Free memory was 131.3MB in the beginning and 129.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,200 INFO L158 Benchmark]: Boogie Preprocessor took 63.31ms. Allocated memory is still 190.8MB. Free memory was 129.2MB in the beginning and 128.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,200 INFO L158 Benchmark]: RCFGBuilder took 508.05ms. Allocated memory is still 190.8MB. Free memory was 128.0MB in the beginning and 114.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,201 INFO L158 Benchmark]: TraceAbstraction took 4499.56ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 114.5MB in the beginning and 145.4MB in the end (delta: -30.9MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,201 INFO L158 Benchmark]: Witness Printer took 75.78ms. Allocated memory is still 230.7MB. Free memory was 145.4MB in the beginning and 142.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:09:11,205 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 190.8MB. Free memory was 166.0MB in the beginning and 165.7MB in the end (delta: 268.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 707.49ms. Allocated memory is still 190.8MB. Free memory was 151.0MB in the beginning and 131.3MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.36ms. Allocated memory is still 190.8MB. Free memory was 131.3MB in the beginning and 129.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.31ms. Allocated memory is still 190.8MB. Free memory was 129.2MB in the beginning and 128.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.05ms. Allocated memory is still 190.8MB. Free memory was 128.0MB in the beginning and 114.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4499.56ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 114.5MB in the beginning and 145.4MB in the end (delta: -30.9MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 75.78ms. Allocated memory is still 230.7MB. Free memory was 145.4MB in the beginning and 142.3MB 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: 2.2s, 61 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 13 TransitionsAfterwards, 564 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 1156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 683, independent: 613, independent conditional: 0, independent unconditional: 613, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 330, independent: 311, independent conditional: 0, independent unconditional: 311, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 683, independent: 302, independent conditional: 0, independent unconditional: 302, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 330, unknown conditional: 0, unknown unconditional: 330] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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 5 procedures, 85 locations, 3 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: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 29 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=3, InterpolantAutomatonStates: 24, 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, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 23:09:11,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d4f043c-6403-4120-8368-85a2ed3422d0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE