./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 39bd8ca48891731a487992488872bfabe93c299f5e64a0d2d763ed7464a4fc31 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:10:34,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:10:34,087 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:10:34,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:10:34,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:10:34,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:10:34,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:10:34,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:10:34,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:10:34,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:10:34,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:10:34,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:10:34,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:10:34,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:10:34,110 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:10:34,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:10:34,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:10:34,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:10:34,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:10:34,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:10:34,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:10:34,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:10:34,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:10:34,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:10:34,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:10:34,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:10:34,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:10:34,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:10:34,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:10:34,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:10:34,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:10:34,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:10:34,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:10:34,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:10:34,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:10:34,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:10:34,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:10:34,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:10:34,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:10:34,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:10:34,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:10:34,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:10:34,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:10:34,124 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bd8ca48891731a487992488872bfabe93c299f5e64a0d2d763ed7464a4fc31 [2024-01-27 16:10:34,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:10:34,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:10:34,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:10:34,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:10:34,334 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:10:34,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i [2024-01-27 16:10:35,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:10:35,526 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:10:35,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix013.oepc.i [2024-01-27 16:10:35,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adce7fd2b/86d4be8d37df4362ba180fd68c862275/FLAG64722bfb7 [2024-01-27 16:10:35,552 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adce7fd2b/86d4be8d37df4362ba180fd68c862275 [2024-01-27 16:10:35,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:10:35,555 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:10:35,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:10:35,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:10:35,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:10:35,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:10:35" (1/1) ... [2024-01-27 16:10:35,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d480f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:35, skipping insertion in model container [2024-01-27 16:10:35,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:10:35" (1/1) ... [2024-01-27 16:10:35,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:10:35,716 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix013.oepc.i[945,958] [2024-01-27 16:10:35,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:10:35,920 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:10:35,929 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix013.oepc.i[945,958] [2024-01-27 16:10:35,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:10:36,016 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:10:36,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36 WrapperNode [2024-01-27 16:10:36,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:10:36,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:10:36,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:10:36,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:10:36,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,100 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-01-27 16:10:36,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:10:36,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:10:36,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:10:36,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:10:36,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,148 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 16:10:36,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:10:36,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:10:36,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:10:36,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:10:36,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (1/1) ... [2024-01-27 16:10:36,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:10:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:10:36,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 16:10:36,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 16:10:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:10:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:10:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:10:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:10:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:10:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:10:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:10:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:10:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:10:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:10:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:10:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:10:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:10:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:10:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:10:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:10:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:10:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:10:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:10:36,264 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:10:36,452 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:10:36,453 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:10:36,667 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:10:36,667 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:10:36,815 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:10:36,816 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:10:36,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:10:36 BoogieIcfgContainer [2024-01-27 16:10:36,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:10:36,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:10:36,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:10:36,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:10:36,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:10:35" (1/3) ... [2024-01-27 16:10:36,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd18e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:10:36, skipping insertion in model container [2024-01-27 16:10:36,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:10:36" (2/3) ... [2024-01-27 16:10:36,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd18e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:10:36, skipping insertion in model container [2024-01-27 16:10:36,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:10:36" (3/3) ... [2024-01-27 16:10:36,824 INFO L112 eAbstractionObserver]: Analyzing ICFG mix013.oepc.i [2024-01-27 16:10:36,830 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:10:36,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:10:36,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:10:36,838 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:10:36,888 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:10:36,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:10:36,948 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-27 16:10:36,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:10:36,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-01-27 16:10:36,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:10:36,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-01-27 16:10:36,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:10:36,974 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=LoopHeads, 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;@4f08731a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:10:36,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:10:36,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:10:36,977 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:10:36,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:10:36,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:36,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:10:36,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:36,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash 12487414, now seen corresponding path program 1 times [2024-01-27 16:10:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:36,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101901904] [2024-01-27 16:10:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:36,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101901904] [2024-01-27 16:10:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101901904] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:37,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:10:37,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846737510] [2024-01-27 16:10:37,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:10:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:10:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:10:37,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-01-27 16:10:37,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-01-27 16:10:37,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:37,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-01-27 16:10:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:38,002 INFO L124 PetriNetUnfolderBase]: 2495/3958 cut-off events. [2024-01-27 16:10:38,002 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:10:38,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 3958 events. 2495/3958 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 25161 event pairs, 1647 based on Foata normal form. 135/4025 useless extension candidates. Maximal degree in co-relation 7522. Up to 2779 conditions per place. [2024-01-27 16:10:38,025 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-01-27 16:10:38,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-01-27 16:10:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:10:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:10:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-01-27 16:10:38,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-01-27 16:10:38,038 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-01-27 16:10:38,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-01-27 16:10:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:10:38,047 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-01-27 16:10:38,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-01-27 16:10:38,052 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-01-27 16:10:38,052 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-01-27 16:10:38,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-01-27 16:10:38,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:38,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:38,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:10:38,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:38,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2031458290, now seen corresponding path program 1 times [2024-01-27 16:10:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:38,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604316204] [2024-01-27 16:10:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604316204] [2024-01-27 16:10:38,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604316204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:10:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004988835] [2024-01-27 16:10:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:38,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:10:38,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:10:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:10:38,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:10:38,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-01-27 16:10:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:10:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:40,355 INFO L124 PetriNetUnfolderBase]: 16854/23936 cut-off events. [2024-01-27 16:10:40,355 INFO L125 PetriNetUnfolderBase]: For 1148/1148 co-relation queries the response was YES. [2024-01-27 16:10:40,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47957 conditions, 23936 events. 16854/23936 cut-off events. For 1148/1148 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 158880 event pairs, 8364 based on Foata normal form. 0/23417 useless extension candidates. Maximal degree in co-relation 47947. Up to 14786 conditions per place. [2024-01-27 16:10:40,459 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 38 selfloop transitions, 5 changer transitions 61/117 dead transitions. [2024-01-27 16:10:40,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 117 transitions, 472 flow [2024-01-27 16:10:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:10:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:10:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-01-27 16:10:40,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-01-27 16:10:40,461 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 242 transitions. [2024-01-27 16:10:40,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 117 transitions, 472 flow [2024-01-27 16:10:40,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:10:40,464 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2024-01-27 16:10:40,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-01-27 16:10:40,465 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-01-27 16:10:40,465 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2024-01-27 16:10:40,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-01-27 16:10:40,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:40,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:40,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:10:40,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:40,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1347400197, now seen corresponding path program 1 times [2024-01-27 16:10:40,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:40,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18771226] [2024-01-27 16:10:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:40,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18771226] [2024-01-27 16:10:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18771226] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:40,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:40,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:10:40,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571364722] [2024-01-27 16:10:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:40,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:10:40,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:10:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:10:40,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:10:40,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-01-27 16:10:40,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:40,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:10:40,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:42,243 INFO L124 PetriNetUnfolderBase]: 12761/18365 cut-off events. [2024-01-27 16:10:42,243 INFO L125 PetriNetUnfolderBase]: For 17032/17042 co-relation queries the response was YES. [2024-01-27 16:10:42,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49154 conditions, 18365 events. 12761/18365 cut-off events. For 17032/17042 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 118367 event pairs, 2141 based on Foata normal form. 490/18754 useless extension candidates. Maximal degree in co-relation 49139. Up to 11481 conditions per place. [2024-01-27 16:10:42,337 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 44 selfloop transitions, 3 changer transitions 55/115 dead transitions. [2024-01-27 16:10:42,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 603 flow [2024-01-27 16:10:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:10:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:10:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-01-27 16:10:42,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6257142857142857 [2024-01-27 16:10:42,339 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 219 transitions. [2024-01-27 16:10:42,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 603 flow [2024-01-27 16:10:42,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 590 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-27 16:10:42,566 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2024-01-27 16:10:42,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-01-27 16:10:42,567 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-01-27 16:10:42,567 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2024-01-27 16:10:42,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-01-27 16:10:42,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:42,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:42,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:10:42,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:42,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash -918104967, now seen corresponding path program 1 times [2024-01-27 16:10:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:42,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609584595] [2024-01-27 16:10:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:42,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609584595] [2024-01-27 16:10:42,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609584595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:42,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:42,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:10:42,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933278988] [2024-01-27 16:10:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:42,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:10:42,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:10:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:10:42,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-01-27 16:10:42,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2024-01-27 16:10:42,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:42,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-01-27 16:10:42,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:43,886 INFO L124 PetriNetUnfolderBase]: 7596/11791 cut-off events. [2024-01-27 16:10:43,886 INFO L125 PetriNetUnfolderBase]: For 9462/9753 co-relation queries the response was YES. [2024-01-27 16:10:43,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29261 conditions, 11791 events. 7596/11791 cut-off events. For 9462/9753 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 82779 event pairs, 2289 based on Foata normal form. 320/11697 useless extension candidates. Maximal degree in co-relation 29242. Up to 6906 conditions per place. [2024-01-27 16:10:43,953 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 3 changer transitions 41/102 dead transitions. [2024-01-27 16:10:43,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 467 flow [2024-01-27 16:10:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:10:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:10:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-27 16:10:43,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-01-27 16:10:43,956 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 7 states and 230 transitions. [2024-01-27 16:10:43,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 467 flow [2024-01-27 16:10:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 445 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-27 16:10:44,017 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 164 flow [2024-01-27 16:10:44,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-01-27 16:10:44,020 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2024-01-27 16:10:44,020 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 164 flow [2024-01-27 16:10:44,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2024-01-27 16:10:44,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:44,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:44,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:10:44,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:44,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1973887843, now seen corresponding path program 1 times [2024-01-27 16:10:44,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:44,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332498066] [2024-01-27 16:10:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:44,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332498066] [2024-01-27 16:10:44,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332498066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:44,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:44,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:10:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940663356] [2024-01-27 16:10:44,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:44,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:10:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:10:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:10:44,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:44,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-27 16:10:44,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:44,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:44,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:45,452 INFO L124 PetriNetUnfolderBase]: 12832/19160 cut-off events. [2024-01-27 16:10:45,452 INFO L125 PetriNetUnfolderBase]: For 8437/8684 co-relation queries the response was YES. [2024-01-27 16:10:45,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43297 conditions, 19160 events. 12832/19160 cut-off events. For 8437/8684 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 133838 event pairs, 2303 based on Foata normal form. 685/19092 useless extension candidates. Maximal degree in co-relation 43277. Up to 9128 conditions per place. [2024-01-27 16:10:45,587 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 53 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-01-27 16:10:45,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 352 flow [2024-01-27 16:10:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:10:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:10:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-27 16:10:45,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-01-27 16:10:45,589 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 164 flow. Second operand 4 states and 141 transitions. [2024-01-27 16:10:45,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 352 flow [2024-01-27 16:10:45,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 338 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-27 16:10:45,734 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 196 flow [2024-01-27 16:10:45,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-01-27 16:10:45,736 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-01-27 16:10:45,737 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 196 flow [2024-01-27 16:10:45,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-01-27 16:10:45,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:45,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:45,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:10:45,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:45,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -671465006, now seen corresponding path program 1 times [2024-01-27 16:10:45,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:45,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370968220] [2024-01-27 16:10:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:45,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370968220] [2024-01-27 16:10:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370968220] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:10:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336381997] [2024-01-27 16:10:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:10:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:10:45,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:10:45,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:45,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-01-27 16:10:45,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:45,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:45,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:47,008 INFO L124 PetriNetUnfolderBase]: 10884/16284 cut-off events. [2024-01-27 16:10:47,009 INFO L125 PetriNetUnfolderBase]: For 6154/6302 co-relation queries the response was YES. [2024-01-27 16:10:47,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39694 conditions, 16284 events. 10884/16284 cut-off events. For 6154/6302 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 109792 event pairs, 1492 based on Foata normal form. 602/16226 useless extension candidates. Maximal degree in co-relation 39676. Up to 5576 conditions per place. [2024-01-27 16:10:47,101 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 69 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2024-01-27 16:10:47,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 477 flow [2024-01-27 16:10:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:10:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:10:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-01-27 16:10:47,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2024-01-27 16:10:47,103 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 196 flow. Second operand 5 states and 181 transitions. [2024-01-27 16:10:47,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 477 flow [2024-01-27 16:10:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:10:47,106 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 261 flow [2024-01-27 16:10:47,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-01-27 16:10:47,107 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2024-01-27 16:10:47,107 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 261 flow [2024-01-27 16:10:47,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-01-27 16:10:47,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:47,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:10:47,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:47,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:47,108 INFO L85 PathProgramCache]: Analyzing trace with hash -122941350, now seen corresponding path program 1 times [2024-01-27 16:10:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:47,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936943536] [2024-01-27 16:10:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:47,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:47,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:47,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936943536] [2024-01-27 16:10:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936943536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:47,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:10:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477595695] [2024-01-27 16:10:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:47,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:10:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:10:47,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:10:47,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:47,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-01-27 16:10:47,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:47,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:47,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:48,419 INFO L124 PetriNetUnfolderBase]: 8800/12984 cut-off events. [2024-01-27 16:10:48,420 INFO L125 PetriNetUnfolderBase]: For 12646/12718 co-relation queries the response was YES. [2024-01-27 16:10:48,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35423 conditions, 12984 events. 8800/12984 cut-off events. For 12646/12718 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82681 event pairs, 1146 based on Foata normal form. 364/12751 useless extension candidates. Maximal degree in co-relation 35402. Up to 4412 conditions per place. [2024-01-27 16:10:48,495 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 83 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-01-27 16:10:48,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 116 transitions, 624 flow [2024-01-27 16:10:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:10:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:10:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-01-27 16:10:48,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-01-27 16:10:48,497 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 261 flow. Second operand 6 states and 219 transitions. [2024-01-27 16:10:48,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 116 transitions, 624 flow [2024-01-27 16:10:48,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 116 transitions, 608 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 16:10:48,507 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 331 flow [2024-01-27 16:10:48,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-01-27 16:10:48,507 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-01-27 16:10:48,507 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 331 flow [2024-01-27 16:10:48,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-01-27 16:10:48,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:48,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:48,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:10:48,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:48,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1889437754, now seen corresponding path program 1 times [2024-01-27 16:10:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988109466] [2024-01-27 16:10:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:49,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:49,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988109466] [2024-01-27 16:10:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988109466] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:49,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:10:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050152294] [2024-01-27 16:10:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:49,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:10:49,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:49,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:10:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:10:49,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:10:49,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 331 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2024-01-27 16:10:49,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:49,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:10:49,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:50,969 INFO L124 PetriNetUnfolderBase]: 10170/17507 cut-off events. [2024-01-27 16:10:50,969 INFO L125 PetriNetUnfolderBase]: For 24271/32881 co-relation queries the response was YES. [2024-01-27 16:10:51,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47844 conditions, 17507 events. 10170/17507 cut-off events. For 24271/32881 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 143788 event pairs, 3817 based on Foata normal form. 410/16308 useless extension candidates. Maximal degree in co-relation 47821. Up to 5428 conditions per place. [2024-01-27 16:10:51,096 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 84 selfloop transitions, 9 changer transitions 16/146 dead transitions. [2024-01-27 16:10:51,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 146 transitions, 825 flow [2024-01-27 16:10:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:10:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:10:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2024-01-27 16:10:51,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-01-27 16:10:51,098 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 331 flow. Second operand 8 states and 286 transitions. [2024-01-27 16:10:51,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 146 transitions, 825 flow [2024-01-27 16:10:51,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 146 transitions, 794 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-27 16:10:51,183 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 362 flow [2024-01-27 16:10:51,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-01-27 16:10:51,184 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-01-27 16:10:51,184 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 362 flow [2024-01-27 16:10:51,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2024-01-27 16:10:51,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:51,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:51,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:10:51,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:51,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1068941422, now seen corresponding path program 2 times [2024-01-27 16:10:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288106545] [2024-01-27 16:10:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:51,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:51,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288106545] [2024-01-27 16:10:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288106545] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:51,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:51,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:10:51,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195741892] [2024-01-27 16:10:51,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:51,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:10:51,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:51,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:10:51,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:10:51,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:51,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-01-27 16:10:51,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:51,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:51,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:53,841 INFO L124 PetriNetUnfolderBase]: 20759/34793 cut-off events. [2024-01-27 16:10:53,841 INFO L125 PetriNetUnfolderBase]: For 46097/53985 co-relation queries the response was YES. [2024-01-27 16:10:54,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103085 conditions, 34793 events. 20759/34793 cut-off events. For 46097/53985 co-relation queries the response was YES. Maximal size of possible extension queue 2024. Compared 310331 event pairs, 6556 based on Foata normal form. 967/32165 useless extension candidates. Maximal degree in co-relation 103057. Up to 12971 conditions per place. [2024-01-27 16:10:54,152 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 77 selfloop transitions, 3 changer transitions 25/139 dead transitions. [2024-01-27 16:10:54,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 139 transitions, 883 flow [2024-01-27 16:10:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:10:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:10:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-01-27 16:10:54,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-01-27 16:10:54,154 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 362 flow. Second operand 6 states and 201 transitions. [2024-01-27 16:10:54,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 139 transitions, 883 flow [2024-01-27 16:10:54,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 139 transitions, 856 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-27 16:10:54,480 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 383 flow [2024-01-27 16:10:54,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-01-27 16:10:54,481 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-01-27 16:10:54,481 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 383 flow [2024-01-27 16:10:54,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-01-27 16:10:54,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:54,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:54,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:10:54,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:54,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1641982480, now seen corresponding path program 3 times [2024-01-27 16:10:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:54,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486912148] [2024-01-27 16:10:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:54,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:54,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486912148] [2024-01-27 16:10:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486912148] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:54,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:54,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:10:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604019367] [2024-01-27 16:10:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:10:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:10:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:10:54,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:54,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-01-27 16:10:54,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:54,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:54,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:58,487 INFO L124 PetriNetUnfolderBase]: 29950/43487 cut-off events. [2024-01-27 16:10:58,487 INFO L125 PetriNetUnfolderBase]: For 67979/71550 co-relation queries the response was YES. [2024-01-27 16:10:58,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139365 conditions, 43487 events. 29950/43487 cut-off events. For 67979/71550 co-relation queries the response was YES. Maximal size of possible extension queue 2478. Compared 318215 event pairs, 2532 based on Foata normal form. 613/42534 useless extension candidates. Maximal degree in co-relation 139336. Up to 16668 conditions per place. [2024-01-27 16:10:58,836 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 84 selfloop transitions, 18 changer transitions 12/134 dead transitions. [2024-01-27 16:10:58,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 134 transitions, 835 flow [2024-01-27 16:10:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:10:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:10:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-27 16:10:58,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-01-27 16:10:58,844 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 383 flow. Second operand 7 states and 235 transitions. [2024-01-27 16:10:58,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 134 transitions, 835 flow [2024-01-27 16:10:59,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 812 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-27 16:10:59,665 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 405 flow [2024-01-27 16:10:59,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2024-01-27 16:10:59,665 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-01-27 16:10:59,665 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 405 flow [2024-01-27 16:10:59,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-01-27 16:10:59,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:59,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 16:10:59,666 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:59,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash 650468398, now seen corresponding path program 1 times [2024-01-27 16:10:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420353152] [2024-01-27 16:10:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:59,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420353152] [2024-01-27 16:10:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420353152] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:10:59,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231985653] [2024-01-27 16:10:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:10:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:10:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:10:59,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:10:59,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-01-27 16:10:59,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:59,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:10:59,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:04,269 INFO L124 PetriNetUnfolderBase]: 32002/51073 cut-off events. [2024-01-27 16:11:04,270 INFO L125 PetriNetUnfolderBase]: For 125958/144732 co-relation queries the response was YES. [2024-01-27 16:11:04,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163977 conditions, 51073 events. 32002/51073 cut-off events. For 125958/144732 co-relation queries the response was YES. Maximal size of possible extension queue 3534. Compared 450089 event pairs, 5895 based on Foata normal form. 948/46920 useless extension candidates. Maximal degree in co-relation 163949. Up to 19923 conditions per place. [2024-01-27 16:11:04,785 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 78 selfloop transitions, 9 changer transitions 16/131 dead transitions. [2024-01-27 16:11:04,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 877 flow [2024-01-27 16:11:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:11:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:11:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-01-27 16:11:04,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-01-27 16:11:04,787 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 405 flow. Second operand 8 states and 216 transitions. [2024-01-27 16:11:04,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 877 flow [2024-01-27 16:11:06,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 774 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-01-27 16:11:06,446 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 380 flow [2024-01-27 16:11:06,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=380, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-01-27 16:11:06,446 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-01-27 16:11:06,446 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 380 flow [2024-01-27 16:11:06,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-01-27 16:11:06,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:06,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:06,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 16:11:06,447 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:06,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1706666534, now seen corresponding path program 2 times [2024-01-27 16:11:06,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:06,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978588235] [2024-01-27 16:11:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978588235] [2024-01-27 16:11:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978588235] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:07,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:07,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 16:11:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024874094] [2024-01-27 16:11:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:07,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 16:11:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 16:11:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-01-27 16:11:07,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:11:07,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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) [2024-01-27 16:11:07,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:07,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:11:07,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:11,985 INFO L124 PetriNetUnfolderBase]: 31398/56454 cut-off events. [2024-01-27 16:11:11,985 INFO L125 PetriNetUnfolderBase]: For 79419/91900 co-relation queries the response was YES. [2024-01-27 16:11:12,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159624 conditions, 56454 events. 31398/56454 cut-off events. For 79419/91900 co-relation queries the response was YES. Maximal size of possible extension queue 4751. Compared 601871 event pairs, 8981 based on Foata normal form. 1010/50961 useless extension candidates. Maximal degree in co-relation 159595. Up to 15624 conditions per place. [2024-01-27 16:11:12,680 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 64 selfloop transitions, 10 changer transitions 14/130 dead transitions. [2024-01-27 16:11:12,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 768 flow [2024-01-27 16:11:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:11:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:11:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-01-27 16:11:12,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-01-27 16:11:12,682 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 380 flow. Second operand 9 states and 282 transitions. [2024-01-27 16:11:12,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 768 flow [2024-01-27 16:11:15,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 130 transitions, 756 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 16:11:15,565 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 445 flow [2024-01-27 16:11:15,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=445, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-01-27 16:11:15,566 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2024-01-27 16:11:15,567 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 445 flow [2024-01-27 16:11:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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) [2024-01-27 16:11:15,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:15,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 16:11:15,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:15,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1476901950, now seen corresponding path program 3 times [2024-01-27 16:11:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:15,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82441572] [2024-01-27 16:11:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:15,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82441572] [2024-01-27 16:11:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82441572] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:15,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:15,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:11:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568505048] [2024-01-27 16:11:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:11:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:11:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:11:15,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:11:15,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-01-27 16:11:15,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:15,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:11:15,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand