./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-1.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/triangular-1.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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:03:41,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:03:41,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:03:41,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:03:41,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:03:41,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:03:41,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:03:41,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:03:41,212 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:03:41,215 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:03:41,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:03:41,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:03:41,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:03:41,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:03:41,218 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:03:41,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:03:41,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:03:41,219 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:03:41,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:03:41,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:03:41,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:03:41,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:03:41,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:03:41,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:03:41,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:03:41,221 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:03:41,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:03:41,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:03:41,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:03:41,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:03:41,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:03:41,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:03:41,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:03:41,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:03:41,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:03:41,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:03:41,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:03:41,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:03:41,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:03:41,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:03:41,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:03:41,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:03:41,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:03:41,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:03:41,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:03:41,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:03:41,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:03:41,578 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:03:41,579 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:03:41,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2024-02-19 14:03:42,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:03:43,097 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:03:43,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2024-02-19 14:03:43,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3369ce91/f2ce6cf486714ae4a439547c2b0eb7b1/FLAG100deb569 [2024-02-19 14:03:43,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3369ce91/f2ce6cf486714ae4a439547c2b0eb7b1 [2024-02-19 14:03:43,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:03:43,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:03:43,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:03:43,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:03:43,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:03:43,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e1e01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43, skipping insertion in model container [2024-02-19 14:03:43,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:03:43,539 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/triangular-1.i[30950,30963] [2024-02-19 14:03:43,544 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:03:43,551 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:03:43,599 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/triangular-1.i[30950,30963] [2024-02-19 14:03:43,601 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:03:43,637 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:03:43,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43 WrapperNode [2024-02-19 14:03:43,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:03:43,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:03:43,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:03:43,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:03:43,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,694 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2024-02-19 14:03:43,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:03:43,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:03:43,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:03:43,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:03:43,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,730 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-19 14:03:43,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:03:43,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:03:43,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:03:43,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:03:43,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (1/1) ... [2024-02-19 14:03:43,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:03:43,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:03:43,789 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) [2024-02-19 14:03:43,800 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 [2024-02-19 14:03:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-02-19 14:03:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-02-19 14:03:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-02-19 14:03:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-02-19 14:03:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:03:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:03:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:03:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:03:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:03:43,846 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:03:43,961 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:03:43,963 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:03:44,148 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:03:44,148 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:03:44,260 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:03:44,261 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-19 14:03:44,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:03:44 BoogieIcfgContainer [2024-02-19 14:03:44,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:03:44,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:03:44,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:03:44,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:03:44,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:03:43" (1/3) ... [2024-02-19 14:03:44,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a09f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:03:44, skipping insertion in model container [2024-02-19 14:03:44,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:03:43" (2/3) ... [2024-02-19 14:03:44,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a09f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:03:44, skipping insertion in model container [2024-02-19 14:03:44,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:03:44" (3/3) ... [2024-02-19 14:03:44,273 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-02-19 14:03:44,289 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:03:44,289 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:03:44,289 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:03:44,321 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-19 14:03:44,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-02-19 14:03:44,392 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-02-19 14:03:44,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:03:44,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-02-19 14:03:44,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-02-19 14:03:44,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-02-19 14:03:44,413 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:03:44,420 INFO L369 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=All, 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;@1ff0411, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:03:44,420 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-19 14:03:44,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:03:44,433 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-02-19 14:03:44,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:03:44,434 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:44,435 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:44,435 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1796875976, now seen corresponding path program 1 times [2024-02-19 14:03:44,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696325521] [2024-02-19 14:03:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:44,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:44,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:44,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696325521] [2024-02-19 14:03:44,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696325521] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:03:44,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:03:44,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:03:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292611959] [2024-02-19 14:03:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:03:44,838 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:03:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:03:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:03:44,884 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:44,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-02-19 14:03:44,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:44,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:44,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:45,096 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-02-19 14:03:45,096 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-19 14:03:45,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2180 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-02-19 14:03:45,101 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-02-19 14:03:45,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-02-19 14:03:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:03:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:03:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-02-19 14:03:45,112 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-02-19 14:03:45,115 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-02-19 14:03:45,116 INFO L507 AbstractCegarLoop]: Abstraction has has 31 places, 54 transitions, 216 flow [2024-02-19 14:03:45,116 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-02-19 14:03:45,116 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:45,116 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:45,117 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:03:45,117 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:45,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 676521124, now seen corresponding path program 1 times [2024-02-19 14:03:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356951007] [2024-02-19 14:03:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356951007] [2024-02-19 14:03:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356951007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:03:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:03:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:03:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511356325] [2024-02-19 14:03:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:03:45,282 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:03:45,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:45,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:03:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:03:45,311 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:45,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 54 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-02-19 14:03:45,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:45,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:45,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:45,577 INFO L124 PetriNetUnfolderBase]: 697/1161 cut-off events. [2024-02-19 14:03:45,578 INFO L125 PetriNetUnfolderBase]: For 82/90 co-relation queries the response was YES. [2024-02-19 14:03:45,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1161 events. 697/1161 cut-off events. For 82/90 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5196 event pairs, 50 based on Foata normal form. 0/1121 useless extension candidates. Maximal degree in co-relation 3307. Up to 547 conditions per place. [2024-02-19 14:03:45,588 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 58 selfloop transitions, 11 changer transitions 111/183 dead transitions. [2024-02-19 14:03:45,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 183 transitions, 1095 flow [2024-02-19 14:03:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-19 14:03:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-19 14:03:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-02-19 14:03:45,593 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-02-19 14:03:45,594 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-02-19 14:03:45,594 INFO L507 AbstractCegarLoop]: Abstraction has has 40 places, 183 transitions, 1095 flow [2024-02-19 14:03:45,594 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-02-19 14:03:45,594 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:45,595 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:45,595 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:03:45,595 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:45,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 299733066, now seen corresponding path program 2 times [2024-02-19 14:03:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:45,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871316077] [2024-02-19 14:03:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871316077] [2024-02-19 14:03:45,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871316077] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:03:45,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:03:45,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:03:45,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302001983] [2024-02-19 14:03:45,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:03:45,748 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:03:45,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:03:45,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:03:45,757 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:45,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 183 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-02-19 14:03:45,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:45,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:45,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:46,023 INFO L124 PetriNetUnfolderBase]: 787/1314 cut-off events. [2024-02-19 14:03:46,023 INFO L125 PetriNetUnfolderBase]: For 317/327 co-relation queries the response was YES. [2024-02-19 14:03:46,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4949 conditions, 1314 events. 787/1314 cut-off events. For 317/327 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6043 event pairs, 44 based on Foata normal form. 6/1310 useless extension candidates. Maximal degree in co-relation 4933. Up to 541 conditions per place. [2024-02-19 14:03:46,029 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 57 selfloop transitions, 11 changer transitions 183/254 dead transitions. [2024-02-19 14:03:46,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 254 transitions, 2023 flow [2024-02-19 14:03:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:03:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:03:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-02-19 14:03:46,033 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-02-19 14:03:46,035 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-02-19 14:03:46,035 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 254 transitions, 2023 flow [2024-02-19 14:03:46,035 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-02-19 14:03:46,035 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:46,035 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:46,035 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:03:46,036 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1146810191, now seen corresponding path program 1 times [2024-02-19 14:03:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963646749] [2024-02-19 14:03:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:46,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963646749] [2024-02-19 14:03:46,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963646749] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:03:46,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:03:46,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:03:46,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444129462] [2024-02-19 14:03:46,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:03:46,165 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:03:46,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:46,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:03:46,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:03:46,176 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:46,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 254 transitions, 2023 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-02-19 14:03:46,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:46,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:46,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:46,500 INFO L124 PetriNetUnfolderBase]: 1174/1950 cut-off events. [2024-02-19 14:03:46,501 INFO L125 PetriNetUnfolderBase]: For 881/905 co-relation queries the response was YES. [2024-02-19 14:03:46,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 1950 events. 1174/1950 cut-off events. For 881/905 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9568 event pairs, 50 based on Foata normal form. 0/1910 useless extension candidates. Maximal degree in co-relation 9112. Up to 945 conditions per place. [2024-02-19 14:03:46,511 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 76 selfloop transitions, 20 changer transitions 260/359 dead transitions. [2024-02-19 14:03:46,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 359 transitions, 3575 flow [2024-02-19 14:03:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-19 14:03:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-19 14:03:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 180 transitions. [2024-02-19 14:03:46,513 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-02-19 14:03:46,514 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2024-02-19 14:03:46,514 INFO L507 AbstractCegarLoop]: Abstraction has has 59 places, 359 transitions, 3575 flow [2024-02-19 14:03:46,515 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-02-19 14:03:46,515 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:46,515 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:46,515 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:03:46,515 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 397265521, now seen corresponding path program 2 times [2024-02-19 14:03:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703003700] [2024-02-19 14:03:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:46,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:46,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703003700] [2024-02-19 14:03:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703003700] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:03:46,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:03:46,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:03:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544163914] [2024-02-19 14:03:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:03:46,613 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:03:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:03:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:03:46,628 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:46,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 359 transitions, 3575 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-02-19 14:03:46,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:46,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:46,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:46,979 INFO L124 PetriNetUnfolderBase]: 1192/1973 cut-off events. [2024-02-19 14:03:46,980 INFO L125 PetriNetUnfolderBase]: For 1514/1546 co-relation queries the response was YES. [2024-02-19 14:03:46,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 1973 events. 1192/1973 cut-off events. For 1514/1546 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9698 event pairs, 50 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 11058. Up to 936 conditions per place. [2024-02-19 14:03:46,991 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 70 selfloop transitions, 20 changer transitions 309/402 dead transitions. [2024-02-19 14:03:46,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 402 transitions, 4803 flow [2024-02-19 14:03:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:03:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:03:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-02-19 14:03:46,993 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-02-19 14:03:46,995 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2024-02-19 14:03:46,995 INFO L507 AbstractCegarLoop]: Abstraction has has 69 places, 402 transitions, 4803 flow [2024-02-19 14:03:46,995 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-02-19 14:03:46,995 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:46,995 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:46,996 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:03:46,996 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:46,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1283429067, now seen corresponding path program 3 times [2024-02-19 14:03:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875420311] [2024-02-19 14:03:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:47,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875420311] [2024-02-19 14:03:47,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875420311] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:03:47,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:03:47,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:03:47,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666579108] [2024-02-19 14:03:47,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:03:47,117 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:03:47,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:47,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:03:47,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:03:47,131 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:47,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 402 transitions, 4803 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-02-19 14:03:47,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:47,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:47,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:47,591 INFO L124 PetriNetUnfolderBase]: 1309/2165 cut-off events. [2024-02-19 14:03:47,592 INFO L125 PetriNetUnfolderBase]: For 2449/2489 co-relation queries the response was YES. [2024-02-19 14:03:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14170 conditions, 2165 events. 1309/2165 cut-off events. For 2449/2489 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10926 event pairs, 50 based on Foata normal form. 0/2152 useless extension candidates. Maximal degree in co-relation 14145. Up to 1080 conditions per place. [2024-02-19 14:03:47,603 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 85 selfloop transitions, 16 changer transitions 334/438 dead transitions. [2024-02-19 14:03:47,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 438 transitions, 6105 flow [2024-02-19 14:03:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-19 14:03:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-19 14:03:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 183 transitions. [2024-02-19 14:03:47,605 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-02-19 14:03:47,606 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2024-02-19 14:03:47,606 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 438 transitions, 6105 flow [2024-02-19 14:03:47,606 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-02-19 14:03:47,606 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:47,606 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:47,607 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 14:03:47,607 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:47,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1121990168, now seen corresponding path program 1 times [2024-02-19 14:03:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:47,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324188232] [2024-02-19 14:03:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324188232] [2024-02-19 14:03:47,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324188232] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:03:47,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607429087] [2024-02-19 14:03:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:47,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:03:47,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:03:47,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:03:47,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:03:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:47,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:03:47,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:03:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:47,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:03:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:03:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607429087] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:03:48,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:03:48,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-19 14:03:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396599711] [2024-02-19 14:03:48,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:03:48,029 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 14:03:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 14:03:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:03:48,055 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:48,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 438 transitions, 6105 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 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) [2024-02-19 14:03:48,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:48,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:48,821 INFO L124 PetriNetUnfolderBase]: 2101/3504 cut-off events. [2024-02-19 14:03:48,822 INFO L125 PetriNetUnfolderBase]: For 6221/6269 co-relation queries the response was YES. [2024-02-19 14:03:48,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25949 conditions, 3504 events. 2101/3504 cut-off events. For 6221/6269 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 17974 event pairs, 44 based on Foata normal form. 0/3491 useless extension candidates. Maximal degree in co-relation 25921. Up to 1926 conditions per place. [2024-02-19 14:03:48,842 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 101 selfloop transitions, 35 changer transitions 569/708 dead transitions. [2024-02-19 14:03:48,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 708 transitions, 11295 flow [2024-02-19 14:03:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 14:03:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 14:03:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 277 transitions. [2024-02-19 14:03:48,844 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5496031746031746 [2024-02-19 14:03:48,845 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 76 predicate places. [2024-02-19 14:03:48,845 INFO L507 AbstractCegarLoop]: Abstraction has has 102 places, 708 transitions, 11295 flow [2024-02-19 14:03:48,845 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 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) [2024-02-19 14:03:48,845 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:48,845 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:48,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-19 14:03:49,062 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:03:49,062 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:49,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:49,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1801652510, now seen corresponding path program 1 times [2024-02-19 14:03:49,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:49,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300690229] [2024-02-19 14:03:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:49,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300690229] [2024-02-19 14:03:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300690229] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:03:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776334782] [2024-02-19 14:03:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:03:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:03:49,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:03:49,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:03:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:49,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 14:03:49,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:03:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:49,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:03:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776334782] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:03:49,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:03:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-02-19 14:03:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200887904] [2024-02-19 14:03:49,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:03:49,594 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:03:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:49,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:03:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:03:49,619 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:49,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 708 transitions, 11295 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2024-02-19 14:03:49,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:49,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:49,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:51,204 INFO L124 PetriNetUnfolderBase]: 3784/6326 cut-off events. [2024-02-19 14:03:51,204 INFO L125 PetriNetUnfolderBase]: For 15992/16012 co-relation queries the response was YES. [2024-02-19 14:03:51,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52351 conditions, 6326 events. 3784/6326 cut-off events. For 15992/16012 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 33695 event pairs, 44 based on Foata normal form. 6/6322 useless extension candidates. Maximal degree in co-relation 52320. Up to 3456 conditions per place. [2024-02-19 14:03:51,241 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 168 selfloop transitions, 25 changer transitions 1179/1375 dead transitions. [2024-02-19 14:03:51,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1375 transitions, 24711 flow [2024-02-19 14:03:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-02-19 14:03:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-02-19 14:03:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 415 transitions. [2024-02-19 14:03:51,244 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5577956989247311 [2024-02-19 14:03:51,244 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 106 predicate places. [2024-02-19 14:03:51,245 INFO L507 AbstractCegarLoop]: Abstraction has has 132 places, 1375 transitions, 24711 flow [2024-02-19 14:03:51,245 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2024-02-19 14:03:51,245 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:51,245 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:51,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:03:51,460 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-02-19 14:03:51,460 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -260173034, now seen corresponding path program 2 times [2024-02-19 14:03:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248573205] [2024-02-19 14:03:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248573205] [2024-02-19 14:03:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248573205] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:03:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284707617] [2024-02-19 14:03:51,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:03:51,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:03:51,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:03:51,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:03:51,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:03:51,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:03:51,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:03:51,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 14:03:51,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:03:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:51,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:03:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284707617] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:03:51,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:03:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-02-19 14:03:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257992303] [2024-02-19 14:03:51,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:03:51,966 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:03:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:03:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:03:52,003 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:52,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 1375 transitions, 24711 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-02-19 14:03:52,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:52,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:52,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:03:55,323 INFO L124 PetriNetUnfolderBase]: 6601/11039 cut-off events. [2024-02-19 14:03:55,323 INFO L125 PetriNetUnfolderBase]: For 35680/35744 co-relation queries the response was YES. [2024-02-19 14:03:55,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101371 conditions, 11039 events. 6601/11039 cut-off events. For 35680/35744 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 67512 event pairs, 52 based on Foata normal form. 0/10981 useless extension candidates. Maximal degree in co-relation 101337. Up to 6543 conditions per place. [2024-02-19 14:03:55,390 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 272 selfloop transitions, 81 changer transitions 2015/2371 dead transitions. [2024-02-19 14:03:55,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 2371 transitions, 47375 flow [2024-02-19 14:03:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-19 14:03:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-19 14:03:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 525 transitions. [2024-02-19 14:03:55,396 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-02-19 14:03:55,397 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2024-02-19 14:03:55,398 INFO L507 AbstractCegarLoop]: Abstraction has has 171 places, 2371 transitions, 47375 flow [2024-02-19 14:03:55,398 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-02-19 14:03:55,398 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:03:55,398 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:03:55,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:03:55,617 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:03:55,618 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:03:55,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:03:55,618 INFO L85 PathProgramCache]: Analyzing trace with hash -338305626, now seen corresponding path program 3 times [2024-02-19 14:03:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:03:55,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47583017] [2024-02-19 14:03:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:03:55,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:03:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:03:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:55,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:03:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47583017] [2024-02-19 14:03:55,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47583017] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:03:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013383019] [2024-02-19 14:03:55,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:03:55,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:03:55,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:03:55,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:03:55,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:03:55,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-02-19 14:03:55,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:03:55,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 14:03:55,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:03:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:55,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:03:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:03:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013383019] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:03:56,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:03:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-02-19 14:03:56,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451348045] [2024-02-19 14:03:56,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:03:56,010 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 14:03:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:03:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 14:03:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-02-19 14:03:56,030 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:03:56,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 2371 transitions, 47375 flow. Second operand has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2024-02-19 14:03:56,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:03:56,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:03:56,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:04:01,159 INFO L124 PetriNetUnfolderBase]: 8545/14367 cut-off events. [2024-02-19 14:04:01,159 INFO L125 PetriNetUnfolderBase]: For 59495/59519 co-relation queries the response was YES. [2024-02-19 14:04:01,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144794 conditions, 14367 events. 8545/14367 cut-off events. For 59495/59519 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 92714 event pairs, 50 based on Foata normal form. 6/14363 useless extension candidates. Maximal degree in co-relation 144757. Up to 8802 conditions per place. [2024-02-19 14:04:01,237 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 330 selfloop transitions, 124 changer transitions 2660/3117 dead transitions. [2024-02-19 14:04:01,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 3117 transitions, 68523 flow [2024-02-19 14:04:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-02-19 14:04:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-02-19 14:04:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 533 transitions. [2024-02-19 14:04:01,240 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-02-19 14:04:01,241 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 185 predicate places. [2024-02-19 14:04:01,241 INFO L507 AbstractCegarLoop]: Abstraction has has 211 places, 3117 transitions, 68523 flow [2024-02-19 14:04:01,241 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2024-02-19 14:04:01,241 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:04:01,241 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:04:01,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-19 14:04:01,456 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:04:01,456 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:04:01,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:04:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash 198644797, now seen corresponding path program 4 times [2024-02-19 14:04:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:04:01,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641393197] [2024-02-19 14:04:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:04:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:04:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:04:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:01,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:04:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641393197] [2024-02-19 14:04:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641393197] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:04:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815649366] [2024-02-19 14:04:01,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:04:01,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:04:01,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:04:01,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:04:01,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 14:04:01,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:04:01,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:04:01,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-19 14:04:01,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:04:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:01,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:04:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815649366] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:04:01,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:04:01,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-02-19 14:04:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295409700] [2024-02-19 14:04:01,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:04:01,965 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-19 14:04:01,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:04:01,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-19 14:04:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-02-19 14:04:02,027 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-02-19 14:04:02,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 3117 transitions, 68523 flow. Second operand has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 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) [2024-02-19 14:04:02,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:04:02,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-02-19 14:04:02,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:04:09,131 INFO L124 PetriNetUnfolderBase]: 10570/17742 cut-off events. [2024-02-19 14:04:09,131 INFO L125 PetriNetUnfolderBase]: For 89545/89625 co-relation queries the response was YES. [2024-02-19 14:04:09,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194969 conditions, 17742 events. 10570/17742 cut-off events. For 89545/89625 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 117125 event pairs, 50 based on Foata normal form. 0/17729 useless extension candidates. Maximal degree in co-relation 194929. Up to 10962 conditions per place. [2024-02-19 14:04:09,219 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 414 selfloop transitions, 135 changer transitions 3298/3850 dead transitions. [2024-02-19 14:04:09,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 3850 transitions, 92343 flow [2024-02-19 14:04:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-02-19 14:04:09,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-02-19 14:04:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 453 transitions. [2024-02-19 14:04:09,223 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-02-19 14:04:09,224 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2024-02-19 14:04:09,224 INFO L507 AbstractCegarLoop]: Abstraction has has 245 places, 3850 transitions, 92343 flow [2024-02-19 14:04:09,224 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 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) [2024-02-19 14:04:09,224 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:04:09,225 INFO L234 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:04:09,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 14:04:09,436 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-19 14:04:09,436 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:04:09,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:04:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1982780738, now seen corresponding path program 5 times [2024-02-19 14:04:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:04:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485427270] [2024-02-19 14:04:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:04:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:04:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:04:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 53 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:09,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:04:09,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485427270] [2024-02-19 14:04:09,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485427270] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:04:09,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122850483] [2024-02-19 14:04:09,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:04:09,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:04:09,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:04:09,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:04:09,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 14:04:09,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-02-19 14:04:09,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:04:09,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:04:09,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:04:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:09,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:04:09,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122850483] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:04:09,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:04:09,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-02-19 14:04:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503465327] [2024-02-19 14:04:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:04:09,901 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:04:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:04:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:04:09,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:04:09,905 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-02-19 14:04:09,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 3850 transitions, 92343 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-02-19 14:04:09,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:04:09,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-02-19 14:04:09,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:04:31,301 INFO L124 PetriNetUnfolderBase]: 27413/43590 cut-off events. [2024-02-19 14:04:31,301 INFO L125 PetriNetUnfolderBase]: For 321682/323009 co-relation queries the response was YES. [2024-02-19 14:04:31,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503378 conditions, 43590 events. 27413/43590 cut-off events. For 321682/323009 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 322562 event pairs, 1059 based on Foata normal form. 1271/43938 useless extension candidates. Maximal degree in co-relation 503335. Up to 27759 conditions per place. [2024-02-19 14:04:31,533 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 139 selfloop transitions, 46 changer transitions 9382/9642 dead transitions. [2024-02-19 14:04:31,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 9642 transitions, 247928 flow [2024-02-19 14:04:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:04:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:04:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-02-19 14:04:31,535 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7760416666666666 [2024-02-19 14:04:31,535 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 224 predicate places. [2024-02-19 14:04:31,535 INFO L507 AbstractCegarLoop]: Abstraction has has 250 places, 9642 transitions, 247928 flow [2024-02-19 14:04:31,536 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-02-19 14:04:31,536 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:04:31,536 INFO L234 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:04:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 14:04:31,750 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:04:31,751 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:04:31,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:04:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1727285793, now seen corresponding path program 6 times [2024-02-19 14:04:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:04:31,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871372971] [2024-02-19 14:04:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:04:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:04:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:04:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:31,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:04:31,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871372971] [2024-02-19 14:04:31,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871372971] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:04:31,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698572209] [2024-02-19 14:04:31,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:04:31,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:04:31,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:04:31,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:04:31,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 14:04:32,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-02-19 14:04:32,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:04:32,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-19 14:04:32,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:04:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:04:32,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:04:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698572209] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:04:32,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:04:32,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-02-19 14:04:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697323561] [2024-02-19 14:04:32,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:04:32,154 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:04:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:04:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:04:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:04:32,159 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-02-19 14:04:32,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 9642 transitions, 247928 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-02-19 14:04:32,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:04:32,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-02-19 14:04:32,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:07:34,731 INFO L124 PetriNetUnfolderBase]: 74505/111834 cut-off events. [2024-02-19 14:07:34,731 INFO L125 PetriNetUnfolderBase]: For 1380800/1396151 co-relation queries the response was YES. [2024-02-19 14:07:35,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365672 conditions, 111834 events. 74505/111834 cut-off events. For 1380800/1396151 co-relation queries the response was YES. Maximal size of possible extension queue 3217. Compared 880404 event pairs, 3910 based on Foata normal form. 3049/110575 useless extension candidates. Maximal degree in co-relation 1365626. Up to 72166 conditions per place. [2024-02-19 14:07:35,740 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 28823/28823 dead transitions. [2024-02-19 14:07:35,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 28823 transitions, 802526 flow [2024-02-19 14:07:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:07:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:07:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-02-19 14:07:35,742 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2024-02-19 14:07:35,742 INFO L308 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-02-19 14:07:35,742 INFO L507 AbstractCegarLoop]: Abstraction has has 253 places, 28823 transitions, 802526 flow [2024-02-19 14:07:35,743 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-02-19 14:07:35,745 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-02-19 14:07:35,745 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-02-19 14:07:35,745 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-02-19 14:07:35,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:07:35,954 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true Killed by 15