./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/weaver/chl-nzb-file-subst.wvr.c -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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:38:05,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:38:05,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:38:05,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:38:05,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:38:05,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:38:05,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:38:05,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:38:05,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:38:05,986 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:38:05,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:38:05,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:38:05,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:38:05,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:38:05,989 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:38:05,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:38:05,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:38:05,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:38:05,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:38:05,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:38:05,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:38:05,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:38:05,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:38:05,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:38:05,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:38:05,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:38:05,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:38:05,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:38:05,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:38:05,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:38:05,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:38:05,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:38:05,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:38:05,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:38:05,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:38:05,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:38:05,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:38:05,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:38:05,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:38:05,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:38:05,996 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:38:05,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:38:05,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:38:05,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-06-27 16:38:06,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:38:06,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:38:06,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:38:06,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:38:06,260 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:38:06,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2024-06-27 16:38:07,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:38:07,676 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:38:07,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2024-06-27 16:38:07,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d597e0b15/3bd6f0ced8a640c09c26cf27b259a782/FLAGc0c915264 [2024-06-27 16:38:07,701 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d597e0b15/3bd6f0ced8a640c09c26cf27b259a782 [2024-06-27 16:38:07,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:38:07,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:38:07,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:38:07,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:38:07,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:38:07,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:38:07" (1/1) ... [2024-06-27 16:38:07,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28abc4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:07, skipping insertion in model container [2024-06-27 16:38:07,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:38:07" (1/1) ... [2024-06-27 16:38:07,748 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:38:07,955 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2024-06-27 16:38:07,970 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:38:07,980 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:38:08,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2024-06-27 16:38:08,038 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:38:08,053 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:38:08,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08 WrapperNode [2024-06-27 16:38:08,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:38:08,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:38:08,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:38:08,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:38:08,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,112 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-06-27 16:38:08,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:38:08,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:38:08,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:38:08,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:38:08,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,163 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-27 16:38:08,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:38:08,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:38:08,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:38:08,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:38:08,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (1/1) ... [2024-06-27 16:38:08,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:38:08,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:38:08,233 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) [2024-06-27 16:38:08,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:38:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:38:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:38:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:38:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:38:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:38:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:38:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:38:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:38:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:38:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:38:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:38:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:38:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:38:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:38:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:38:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:38:08,321 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:38:08,493 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:38:08,496 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:38:09,312 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:38:09,313 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:38:10,054 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:38:10,054 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 16:38:10,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:38:10 BoogieIcfgContainer [2024-06-27 16:38:10,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:38:10,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:38:10,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:38:10,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:38:10,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:38:07" (1/3) ... [2024-06-27 16:38:10,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753aafa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:38:10, skipping insertion in model container [2024-06-27 16:38:10,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:08" (2/3) ... [2024-06-27 16:38:10,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753aafa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:38:10, skipping insertion in model container [2024-06-27 16:38:10,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:38:10" (3/3) ... [2024-06-27 16:38:10,066 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-06-27 16:38:10,075 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:38:10,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:38:10,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:38:10,084 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:38:10,203 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:38:10,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-06-27 16:38:10,278 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-06-27 16:38:10,279 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:38:10,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-27 16:38:10,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-06-27 16:38:10,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-06-27 16:38:10,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:38:10,308 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d8c702f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:38:10,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:38:10,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:38:10,332 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-06-27 16:38:10,333 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:38:10,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:10,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:10,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:10,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-06-27 16:38:10,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492723362] [2024-06-27 16:38:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:38:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492723362] [2024-06-27 16:38:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492723362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:10,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:10,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:38:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186262679] [2024-06-27 16:38:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:10,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:38:10,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:38:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:38:10,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:10,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-27 16:38:10,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:10,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:10,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:11,742 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-06-27 16:38:11,743 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-06-27 16:38:11,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12272 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-06-27 16:38:11,762 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-06-27 16:38:11,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-06-27 16:38:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:38:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:38:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-27 16:38:11,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-27 16:38:11,774 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-06-27 16:38:11,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-06-27 16:38:11,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:38:11,781 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-06-27 16:38:11,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-06-27 16:38:11,786 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-27 16:38:11,786 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-06-27 16:38:11,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-27 16:38:11,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:11,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:11,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:38:11,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:11,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-06-27 16:38:11,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:11,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448241187] [2024-06-27 16:38:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:11,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:38:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448241187] [2024-06-27 16:38:11,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448241187] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:38:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945544231] [2024-06-27 16:38:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:11,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:38:11,939 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) [2024-06-27 16:38:11,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:38:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:12,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:12,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:38:12,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:38:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:38:12,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945544231] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:38:12,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:38:12,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-27 16:38:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445134785] [2024-06-27 16:38:12,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:38:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:38:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:38:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:38:12,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:12,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-06-27 16:38:12,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:12,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:12,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:12,927 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-06-27 16:38:12,928 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 16:38:12,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-06-27 16:38:12,942 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-06-27 16:38:12,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-06-27 16:38:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:38:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:38:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 16:38:12,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-06-27 16:38:12,945 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-06-27 16:38:12,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-06-27 16:38:12,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:12,948 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-06-27 16:38:12,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-06-27 16:38:12,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-27 16:38:12,949 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-06-27 16:38:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-06-27 16:38:12,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:12,949 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:12,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:13,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:13,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-06-27 16:38:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691635689] [2024-06-27 16:38:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:13,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691635689] [2024-06-27 16:38:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691635689] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:38:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652585556] [2024-06-27 16:38:13,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:38:13,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:38:13,403 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) [2024-06-27 16:38:13,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:38:13,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 16:38:13,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:13,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:38:13,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 16:38:15,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:15,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652585556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:15,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:38:15,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-06-27 16:38:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321216287] [2024-06-27 16:38:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:15,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:15,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:38:15,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:15,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:15,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:15,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:15,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:16,883 INFO L124 PetriNetUnfolderBase]: 3141/4412 cut-off events. [2024-06-27 16:38:16,883 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 16:38:16,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 4412 events. 3141/4412 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19275 event pairs, 1692 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 8866. Up to 3132 conditions per place. [2024-06-27 16:38:16,903 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 93 selfloop transitions, 2 changer transitions 8/104 dead transitions. [2024-06-27 16:38:16,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 530 flow [2024-06-27 16:38:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 16:38:16,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 16:38:16,908 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 112 transitions. [2024-06-27 16:38:16,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 530 flow [2024-06-27 16:38:16,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 506 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:16,914 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 203 flow [2024-06-27 16:38:16,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-06-27 16:38:16,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-27 16:38:16,916 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 203 flow [2024-06-27 16:38:16,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:16,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:16,916 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:16,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-06-27 16:38:17,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:17,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-06-27 16:38:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480897900] [2024-06-27 16:38:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480897900] [2024-06-27 16:38:17,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480897900] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:38:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081144196] [2024-06-27 16:38:17,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:38:17,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:17,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:38:17,323 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) [2024-06-27 16:38:17,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:38:17,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-27 16:38:17,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:17,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:17,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 16:38:18,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081144196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:18,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:38:18,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-06-27 16:38:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440833497] [2024-06-27 16:38:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:38:18,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:18,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:18,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:18,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:18,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:20,447 INFO L124 PetriNetUnfolderBase]: 3904/5601 cut-off events. [2024-06-27 16:38:20,447 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-27 16:38:20,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 5601 events. 3904/5601 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26283 event pairs, 2311 based on Foata normal form. 1/5093 useless extension candidates. Maximal degree in co-relation 11841. Up to 3990 conditions per place. [2024-06-27 16:38:20,473 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 89 selfloop transitions, 3 changer transitions 8/101 dead transitions. [2024-06-27 16:38:20,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 517 flow [2024-06-27 16:38:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 16:38:20,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-06-27 16:38:20,475 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 203 flow. Second operand 5 states and 108 transitions. [2024-06-27 16:38:20,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 517 flow [2024-06-27 16:38:20,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 16:38:20,480 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2024-06-27 16:38:20,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-06-27 16:38:20,481 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-27 16:38:20,481 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2024-06-27 16:38:20,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:20,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:20,481 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:20,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:20,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:20,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-06-27 16:38:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121895841] [2024-06-27 16:38:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:20,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121895841] [2024-06-27 16:38:20,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121895841] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:38:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147329921] [2024-06-27 16:38:20,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:38:20,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:20,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:38:20,869 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) [2024-06-27 16:38:20,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:38:21,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:38:21,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:21,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 16:38:21,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:21,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:38:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147329921] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:38:21,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:38:21,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-06-27 16:38:21,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308387702] [2024-06-27 16:38:21,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:38:21,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 16:38:21,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:21,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 16:38:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-06-27 16:38:21,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:21,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2024-06-27 16:38:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:21,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:21,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:22,252 INFO L124 PetriNetUnfolderBase]: 3875/5552 cut-off events. [2024-06-27 16:38:22,253 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-06-27 16:38:22,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 5552 events. 3875/5552 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25529 event pairs, 3170 based on Foata normal form. 1/5044 useless extension candidates. Maximal degree in co-relation 12271. Up to 5531 conditions per place. [2024-06-27 16:38:22,278 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-06-27 16:38:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-06-27 16:38:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:38:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:38:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 16:38:22,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-06-27 16:38:22,280 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 7 states and 87 transitions. [2024-06-27 16:38:22,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-06-27 16:38:22,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:38:22,288 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 282 flow [2024-06-27 16:38:22,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-06-27 16:38:22,289 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-27 16:38:22,289 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 282 flow [2024-06-27 16:38:22,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2024-06-27 16:38:22,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:22,290 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:22,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:38:22,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:22,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-06-27 16:38:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478051540] [2024-06-27 16:38:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:24,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:24,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478051540] [2024-06-27 16:38:24,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478051540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:24,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:24,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:24,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255157364] [2024-06-27 16:38:24,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:24,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:24,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:24,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:24,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:24,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:24,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:24,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:26,616 INFO L124 PetriNetUnfolderBase]: 9518/13486 cut-off events. [2024-06-27 16:38:26,617 INFO L125 PetriNetUnfolderBase]: For 2721/2721 co-relation queries the response was YES. [2024-06-27 16:38:26,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28822 conditions, 13486 events. 9518/13486 cut-off events. For 2721/2721 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 71802 event pairs, 2565 based on Foata normal form. 1/11939 useless extension candidates. Maximal degree in co-relation 28709. Up to 4984 conditions per place. [2024-06-27 16:38:26,671 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 147 selfloop transitions, 36 changer transitions 1/185 dead transitions. [2024-06-27 16:38:26,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 185 transitions, 970 flow [2024-06-27 16:38:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:38:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:38:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-27 16:38:26,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626822157434402 [2024-06-27 16:38:26,673 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 282 flow. Second operand 7 states and 193 transitions. [2024-06-27 16:38:26,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 185 transitions, 970 flow [2024-06-27 16:38:26,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 185 transitions, 934 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 16:38:26,686 INFO L231 Difference]: Finished difference. Result has 68 places, 98 transitions, 537 flow [2024-06-27 16:38:26,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=68, PETRI_TRANSITIONS=98} [2024-06-27 16:38:26,687 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-27 16:38:26,687 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 98 transitions, 537 flow [2024-06-27 16:38:26,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:26,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:26,688 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:26,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:38:26,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:26,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-06-27 16:38:26,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:26,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634040065] [2024-06-27 16:38:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:27,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634040065] [2024-06-27 16:38:27,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634040065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:27,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334781753] [2024-06-27 16:38:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:27,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:27,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 98 transitions, 537 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:27,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:27,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:27,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:31,045 INFO L124 PetriNetUnfolderBase]: 12057/17014 cut-off events. [2024-06-27 16:38:31,046 INFO L125 PetriNetUnfolderBase]: For 12964/12964 co-relation queries the response was YES. [2024-06-27 16:38:31,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44449 conditions, 17014 events. 12057/17014 cut-off events. For 12964/12964 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 92883 event pairs, 5037 based on Foata normal form. 1/16581 useless extension candidates. Maximal degree in co-relation 44349. Up to 7746 conditions per place. [2024-06-27 16:38:31,145 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 144 selfloop transitions, 43 changer transitions 2/190 dead transitions. [2024-06-27 16:38:31,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 190 transitions, 1273 flow [2024-06-27 16:38:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 16:38:31,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-06-27 16:38:31,147 INFO L175 Difference]: Start difference. First operand has 68 places, 98 transitions, 537 flow. Second operand 5 states and 131 transitions. [2024-06-27 16:38:31,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 190 transitions, 1273 flow [2024-06-27 16:38:31,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 190 transitions, 1265 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 16:38:31,243 INFO L231 Difference]: Finished difference. Result has 76 places, 129 transitions, 921 flow [2024-06-27 16:38:31,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=921, PETRI_PLACES=76, PETRI_TRANSITIONS=129} [2024-06-27 16:38:31,245 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-27 16:38:31,245 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 129 transitions, 921 flow [2024-06-27 16:38:31,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:31,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:31,246 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:31,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:38:31,246 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:31,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-06-27 16:38:31,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:31,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822825065] [2024-06-27 16:38:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:31,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:32,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822825065] [2024-06-27 16:38:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822825065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452072497] [2024-06-27 16:38:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:32,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:32,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:32,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:32,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 129 transitions, 921 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:32,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:32,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:32,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:35,597 INFO L124 PetriNetUnfolderBase]: 12813/18161 cut-off events. [2024-06-27 16:38:35,597 INFO L125 PetriNetUnfolderBase]: For 28582/28582 co-relation queries the response was YES. [2024-06-27 16:38:35,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52931 conditions, 18161 events. 12813/18161 cut-off events. For 28582/28582 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 101802 event pairs, 6003 based on Foata normal form. 1/17728 useless extension candidates. Maximal degree in co-relation 52827. Up to 11307 conditions per place. [2024-06-27 16:38:35,686 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 181 selfloop transitions, 41 changer transitions 2/225 dead transitions. [2024-06-27 16:38:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 225 transitions, 1850 flow [2024-06-27 16:38:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-06-27 16:38:35,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 16:38:35,690 INFO L175 Difference]: Start difference. First operand has 76 places, 129 transitions, 921 flow. Second operand 5 states and 135 transitions. [2024-06-27 16:38:35,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 225 transitions, 1850 flow [2024-06-27 16:38:35,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 225 transitions, 1838 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 16:38:35,839 INFO L231 Difference]: Finished difference. Result has 83 places, 154 transitions, 1322 flow [2024-06-27 16:38:35,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1322, PETRI_PLACES=83, PETRI_TRANSITIONS=154} [2024-06-27 16:38:35,840 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-27 16:38:35,840 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 154 transitions, 1322 flow [2024-06-27 16:38:35,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:35,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:35,841 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:35,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:38:35,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:35,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:35,842 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-06-27 16:38:35,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:35,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672359527] [2024-06-27 16:38:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:35,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:37,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672359527] [2024-06-27 16:38:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672359527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:37,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172024780] [2024-06-27 16:38:37,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:37,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:37,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:37,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 154 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:37,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:37,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:37,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:40,703 INFO L124 PetriNetUnfolderBase]: 13092/18578 cut-off events. [2024-06-27 16:38:40,703 INFO L125 PetriNetUnfolderBase]: For 43843/43843 co-relation queries the response was YES. [2024-06-27 16:38:40,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57828 conditions, 18578 events. 13092/18578 cut-off events. For 43843/43843 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 104266 event pairs, 5342 based on Foata normal form. 1/18145 useless extension candidates. Maximal degree in co-relation 57720. Up to 8982 conditions per place. [2024-06-27 16:38:40,820 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 169 selfloop transitions, 41 changer transitions 3/214 dead transitions. [2024-06-27 16:38:40,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 214 transitions, 2019 flow [2024-06-27 16:38:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 16:38:40,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 16:38:40,822 INFO L175 Difference]: Start difference. First operand has 83 places, 154 transitions, 1322 flow. Second operand 5 states and 125 transitions. [2024-06-27 16:38:40,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 214 transitions, 2019 flow [2024-06-27 16:38:41,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 214 transitions, 2011 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 16:38:41,019 INFO L231 Difference]: Finished difference. Result has 89 places, 161 transitions, 1505 flow [2024-06-27 16:38:41,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1505, PETRI_PLACES=89, PETRI_TRANSITIONS=161} [2024-06-27 16:38:41,020 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-27 16:38:41,020 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 161 transitions, 1505 flow [2024-06-27 16:38:41,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-27 16:38:41,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:41,020 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:41,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:38:41,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:41,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1538671878, now seen corresponding path program 1 times [2024-06-27 16:38:41,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052399155] [2024-06-27 16:38:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:41,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:41,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:41,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052399155] [2024-06-27 16:38:41,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052399155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:41,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:41,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:38:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712186214] [2024-06-27 16:38:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:38:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:38:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:38:41,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:41,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 161 transitions, 1505 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-06-27 16:38:41,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:41,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:41,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:44,924 INFO L124 PetriNetUnfolderBase]: 16385/23150 cut-off events. [2024-06-27 16:38:44,924 INFO L125 PetriNetUnfolderBase]: For 61400/61400 co-relation queries the response was YES. [2024-06-27 16:38:44,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73827 conditions, 23150 events. 16385/23150 cut-off events. For 61400/61400 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 132584 event pairs, 10208 based on Foata normal form. 434/22716 useless extension candidates. Maximal degree in co-relation 73716. Up to 18551 conditions per place. [2024-06-27 16:38:45,052 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 195 selfloop transitions, 8 changer transitions 1/205 dead transitions. [2024-06-27 16:38:45,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 205 transitions, 2187 flow [2024-06-27 16:38:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:38:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:38:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 16:38:45,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 16:38:45,054 INFO L175 Difference]: Start difference. First operand has 89 places, 161 transitions, 1505 flow. Second operand 3 states and 78 transitions. [2024-06-27 16:38:45,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 205 transitions, 2187 flow [2024-06-27 16:38:45,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 205 transitions, 2122 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 16:38:45,500 INFO L231 Difference]: Finished difference. Result has 90 places, 162 transitions, 1474 flow [2024-06-27 16:38:45,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1474, PETRI_PLACES=90, PETRI_TRANSITIONS=162} [2024-06-27 16:38:45,501 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2024-06-27 16:38:45,501 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 162 transitions, 1474 flow [2024-06-27 16:38:45,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-06-27 16:38:45,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:45,502 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:45,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:38:45,502 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:45,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1420779406, now seen corresponding path program 1 times [2024-06-27 16:38:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703143194] [2024-06-27 16:38:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:45,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:45,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:45,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703143194] [2024-06-27 16:38:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703143194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:45,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:45,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:38:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554532364] [2024-06-27 16:38:45,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:38:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:38:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:38:45,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:45,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 162 transitions, 1474 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:38:45,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:45,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:45,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:49,556 INFO L124 PetriNetUnfolderBase]: 17074/24177 cut-off events. [2024-06-27 16:38:49,556 INFO L125 PetriNetUnfolderBase]: For 63160/63160 co-relation queries the response was YES. [2024-06-27 16:38:49,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77431 conditions, 24177 events. 17074/24177 cut-off events. For 63160/63160 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 138970 event pairs, 6853 based on Foata normal form. 3/24180 useless extension candidates. Maximal degree in co-relation 77320. Up to 18649 conditions per place. [2024-06-27 16:38:49,666 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 155 selfloop transitions, 13 changer transitions 59/228 dead transitions. [2024-06-27 16:38:49,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 228 transitions, 2399 flow [2024-06-27 16:38:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:38:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:38:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 16:38:49,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 16:38:49,668 INFO L175 Difference]: Start difference. First operand has 90 places, 162 transitions, 1474 flow. Second operand 4 states and 103 transitions. [2024-06-27 16:38:49,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 228 transitions, 2399 flow [2024-06-27 16:38:49,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 228 transitions, 2385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:49,918 INFO L231 Difference]: Finished difference. Result has 95 places, 144 transitions, 1356 flow [2024-06-27 16:38:49,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1356, PETRI_PLACES=95, PETRI_TRANSITIONS=144} [2024-06-27 16:38:49,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-27 16:38:49,919 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 144 transitions, 1356 flow [2024-06-27 16:38:49,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:38:49,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:49,919 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:49,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:38:49,920 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:49,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1060390130, now seen corresponding path program 1 times [2024-06-27 16:38:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749481216] [2024-06-27 16:38:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:50,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:50,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749481216] [2024-06-27 16:38:50,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749481216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:50,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:50,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:38:50,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880475432] [2024-06-27 16:38:50,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:50,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:38:50,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:50,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:38:50,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:38:50,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:50,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 144 transitions, 1356 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:38:50,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:50,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:50,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:54,111 INFO L124 PetriNetUnfolderBase]: 15796/22480 cut-off events. [2024-06-27 16:38:54,111 INFO L125 PetriNetUnfolderBase]: For 56018/56018 co-relation queries the response was YES. [2024-06-27 16:38:54,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70919 conditions, 22480 events. 15796/22480 cut-off events. For 56018/56018 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 128559 event pairs, 6531 based on Foata normal form. 4/22484 useless extension candidates. Maximal degree in co-relation 70823. Up to 17909 conditions per place. [2024-06-27 16:38:54,236 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 154 selfloop transitions, 15 changer transitions 45/215 dead transitions. [2024-06-27 16:38:54,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 215 transitions, 2346 flow [2024-06-27 16:38:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:38:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:38:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-27 16:38:54,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-27 16:38:54,238 INFO L175 Difference]: Start difference. First operand has 95 places, 144 transitions, 1356 flow. Second operand 4 states and 101 transitions. [2024-06-27 16:38:54,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 215 transitions, 2346 flow [2024-06-27 16:38:54,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 215 transitions, 2289 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 16:38:54,554 INFO L231 Difference]: Finished difference. Result has 96 places, 137 transitions, 1314 flow [2024-06-27 16:38:54,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1314, PETRI_PLACES=96, PETRI_TRANSITIONS=137} [2024-06-27 16:38:54,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-27 16:38:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 137 transitions, 1314 flow [2024-06-27 16:38:54,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-27 16:38:54,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:54,556 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:54,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 16:38:54,556 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:38:54,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1898160330, now seen corresponding path program 2 times [2024-06-27 16:38:54,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:38:54,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441917961] [2024-06-27 16:38:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:54,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:38:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:38:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441917961] [2024-06-27 16:38:54,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441917961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:54,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:54,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656783172] [2024-06-27 16:38:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:54,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:54,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:38:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:54,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-06-27 16:38:54,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 137 transitions, 1314 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-06-27 16:38:54,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:54,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-06-27 16:38:54,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand