./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/chl-node-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 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:24:43,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:24:43,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:24:43,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:24:43,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:24:44,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:24:44,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:24:44,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:24:44,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:24:44,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:24:44,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:24:44,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:24:44,004 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:24:44,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:24:44,006 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:24:44,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:24:44,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:24:44,006 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:24:44,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:24:44,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:24:44,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:24:44,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:24:44,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:24:44,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:24:44,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:24:44,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:24:44,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:24:44,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:24:44,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:24:44,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:24:44,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 [2024-11-16 19:24:44,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:24:44,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:24:44,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:24:44,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:24:44,228 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:24:44,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-11-16 19:24:45,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:24:45,539 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:24:45,540 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-11-16 19:24:45,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e82b1e4/0d2bbdbff8a04efeb983b63bade79992/FLAGb183e7039 [2024-11-16 19:24:45,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e82b1e4/0d2bbdbff8a04efeb983b63bade79992 [2024-11-16 19:24:45,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:24:45,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:24:45,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:24:45,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:24:45,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:24:45,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:45" (1/1) ... [2024-11-16 19:24:45,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d5c94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:45, skipping insertion in model container [2024-11-16 19:24:45,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:45" (1/1) ... [2024-11-16 19:24:45,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:24:46,165 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4035,4048] [2024-11-16 19:24:46,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:24:46,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:24:46,217 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4035,4048] [2024-11-16 19:24:46,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:24:46,245 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:24:46,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46 WrapperNode [2024-11-16 19:24:46,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:24:46,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:24:46,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:24:46,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:24:46,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,293 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 418 [2024-11-16 19:24:46,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:24:46,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:24:46,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:24:46,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:24:46,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,332 INFO L175 MemorySlicer]: Split 26 memory accesses to 3 slices as follows [2, 15, 9]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2024-11-16 19:24:46,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,343 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:24:46,357 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:24:46,358 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:24:46,358 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:24:46,359 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (1/1) ... [2024-11-16 19:24:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:24:46,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:46,387 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) [2024-11-16 19:24:46,389 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 [2024-11-16 19:24:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:24:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:24:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:24:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:24:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:24:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:24:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:24:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:24:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:24:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:24:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:24:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:24:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:24:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:24:46,467 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:24:46,593 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:24:46,594 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:24:47,031 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:24:47,032 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:24:47,378 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:24:47,378 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:24:47,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:24:47 BoogieIcfgContainer [2024-11-16 19:24:47,379 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:24:47,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:24:47,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:24:47,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:24:47,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:24:45" (1/3) ... [2024-11-16 19:24:47,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b554bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:47, skipping insertion in model container [2024-11-16 19:24:47,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:46" (2/3) ... [2024-11-16 19:24:47,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b554bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:47, skipping insertion in model container [2024-11-16 19:24:47,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:24:47" (3/3) ... [2024-11-16 19:24:47,387 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2024-11-16 19:24:47,402 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:24:47,403 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:24:47,403 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:24:47,458 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:24:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-16 19:24:47,514 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-16 19:24:47,514 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:24:47,516 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 2. Compared 23 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-16 19:24:47,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-16 19:24:47,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-16 19:24:47,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:24:47,534 INFO L333 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, 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;@759bfdd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:24:47,534 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:24:47,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:24:47,569 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-16 19:24:47,569 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:24:47,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:47,570 INFO L204 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] [2024-11-16 19:24:47,570 INFO L396 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)] === [2024-11-16 19:24:47,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1880650075, now seen corresponding path program 1 times [2024-11-16 19:24:47,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600836344] [2024-11-16 19:24:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:47,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600836344] [2024-11-16 19:24:47,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600836344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:47,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:47,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:24:47,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373258665] [2024-11-16 19:24:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:47,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:24:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:24:47,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:24:47,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-16 19:24:47,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-16 19:24:47,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:47,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-16 19:24:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:47,907 INFO L124 PetriNetUnfolderBase]: 38/94 cut-off events. [2024-11-16 19:24:47,908 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-16 19:24:47,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 94 events. 38/94 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 6/100 useless extension candidates. Maximal degree in co-relation 120. Up to 82 conditions per place. [2024-11-16 19:24:47,911 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 26 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-16 19:24:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 148 flow [2024-11-16 19:24:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:24:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:24:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2024-11-16 19:24:47,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-16 19:24:47,922 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 2 states and 64 transitions. [2024-11-16 19:24:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 148 flow [2024-11-16 19:24:47,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:24:47,926 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 84 flow [2024-11-16 19:24:47,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2024-11-16 19:24:47,931 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-11-16 19:24:47,931 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 84 flow [2024-11-16 19:24:47,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-16 19:24:47,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:47,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:47,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:24:47,933 INFO L396 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)] === [2024-11-16 19:24:47,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1256887183, now seen corresponding path program 1 times [2024-11-16 19:24:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:47,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448115146] [2024-11-16 19:24:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:48,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448115146] [2024-11-16 19:24:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448115146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:24:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856093487] [2024-11-16 19:24:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:48,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:24:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:48,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:24:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:24:48,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-16 19:24:48,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-16 19:24:48,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:48,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-16 19:24:48,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:48,333 INFO L124 PetriNetUnfolderBase]: 38/96 cut-off events. [2024-11-16 19:24:48,334 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:24:48,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 96 events. 38/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 32 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 188. Up to 85 conditions per place. [2024-11-16 19:24:48,336 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-11-16 19:24:48,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 146 flow [2024-11-16 19:24:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:24:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:24:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-16 19:24:48,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-16 19:24:48,338 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 84 flow. Second operand 3 states and 70 transitions. [2024-11-16 19:24:48,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 146 flow [2024-11-16 19:24:48,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:24:48,341 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 96 flow [2024-11-16 19:24:48,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2024-11-16 19:24:48,343 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-16 19:24:48,343 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 96 flow [2024-11-16 19:24:48,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-16 19:24:48,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:48,344 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:48,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:24:48,345 INFO L396 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)] === [2024-11-16 19:24:48,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash -651465930, now seen corresponding path program 1 times [2024-11-16 19:24:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044312044] [2024-11-16 19:24:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:48,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:24:48,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:48,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044312044] [2024-11-16 19:24:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044312044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:24:48,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006575062] [2024-11-16 19:24:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:48,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:24:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:24:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:24:48,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-16 19:24:48,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-16 19:24:48,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:48,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-16 19:24:48,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:48,626 INFO L124 PetriNetUnfolderBase]: 38/98 cut-off events. [2024-11-16 19:24:48,627 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:24:48,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 98 events. 38/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 32 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 196. Up to 84 conditions per place. [2024-11-16 19:24:48,631 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 27 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-16 19:24:48,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 160 flow [2024-11-16 19:24:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:24:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:24:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-16 19:24:48,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-16 19:24:48,636 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 96 flow. Second operand 4 states and 84 transitions. [2024-11-16 19:24:48,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 160 flow [2024-11-16 19:24:48,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:24:48,638 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 112 flow [2024-11-16 19:24:48,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-16 19:24:48,639 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-16 19:24:48,639 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 112 flow [2024-11-16 19:24:48,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-16 19:24:48,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:48,639 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:48,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:24:48,640 INFO L396 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)] === [2024-11-16 19:24:48,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1579676864, now seen corresponding path program 1 times [2024-11-16 19:24:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302299913] [2024-11-16 19:24:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:24:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302299913] [2024-11-16 19:24:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302299913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:48,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:48,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:24:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144812038] [2024-11-16 19:24:48,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:48,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:24:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:24:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:24:48,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-16 19:24:48,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-16 19:24:48,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:48,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-16 19:24:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:48,827 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2024-11-16 19:24:48,828 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-16 19:24:48,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 100 events. 38/100 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 32 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 206. Up to 85 conditions per place. [2024-11-16 19:24:48,829 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 28 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-11-16 19:24:48,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 178 flow [2024-11-16 19:24:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:24:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:24:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-16 19:24:48,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-16 19:24:48,830 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 112 flow. Second operand 4 states and 84 transitions. [2024-11-16 19:24:48,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 178 flow [2024-11-16 19:24:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:48,831 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 126 flow [2024-11-16 19:24:48,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-16 19:24:48,832 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-11-16 19:24:48,832 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 126 flow [2024-11-16 19:24:48,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-16 19:24:48,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:48,833 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:48,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:24:48,833 INFO L396 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)] === [2024-11-16 19:24:48,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash -537045137, now seen corresponding path program 1 times [2024-11-16 19:24:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297159789] [2024-11-16 19:24:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:24:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297159789] [2024-11-16 19:24:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297159789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:48,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:24:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919391668] [2024-11-16 19:24:48,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:48,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:24:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:24:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:24:48,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-16 19:24:48,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:48,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:48,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-16 19:24:48,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:49,072 INFO L124 PetriNetUnfolderBase]: 38/102 cut-off events. [2024-11-16 19:24:49,072 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-16 19:24:49,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 102 events. 38/102 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 215. Up to 87 conditions per place. [2024-11-16 19:24:49,073 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-16 19:24:49,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 194 flow [2024-11-16 19:24:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:24:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:24:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-16 19:24:49,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-16 19:24:49,075 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 126 flow. Second operand 4 states and 83 transitions. [2024-11-16 19:24:49,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 194 flow [2024-11-16 19:24:49,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:49,076 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 136 flow [2024-11-16 19:24:49,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-16 19:24:49,077 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-11-16 19:24:49,077 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 136 flow [2024-11-16 19:24:49,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:49,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:49,077 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:49,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:24:49,078 INFO L396 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)] === [2024-11-16 19:24:49,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1405959389, now seen corresponding path program 1 times [2024-11-16 19:24:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399691536] [2024-11-16 19:24:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:24:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399691536] [2024-11-16 19:24:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399691536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:49,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:49,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:24:49,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325500323] [2024-11-16 19:24:49,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:49,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:24:49,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:49,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:24:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:24:49,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-16 19:24:49,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-16 19:24:49,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:49,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-16 19:24:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:49,279 INFO L124 PetriNetUnfolderBase]: 38/104 cut-off events. [2024-11-16 19:24:49,279 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-16 19:24:49,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 104 events. 38/104 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 137 event pairs, 32 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 222. Up to 88 conditions per place. [2024-11-16 19:24:49,280 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 31 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-16 19:24:49,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 206 flow [2024-11-16 19:24:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:24:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:24:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-16 19:24:49,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-16 19:24:49,282 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 136 flow. Second operand 4 states and 83 transitions. [2024-11-16 19:24:49,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 206 flow [2024-11-16 19:24:49,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:49,284 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 146 flow [2024-11-16 19:24:49,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-16 19:24:49,285 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-16 19:24:49,285 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 146 flow [2024-11-16 19:24:49,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-16 19:24:49,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:49,286 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:49,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:24:49,286 INFO L396 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)] === [2024-11-16 19:24:49,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1953388657, now seen corresponding path program 1 times [2024-11-16 19:24:49,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:49,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716419956] [2024-11-16 19:24:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:49,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:24:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716419956] [2024-11-16 19:24:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716419956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:49,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:24:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203161249] [2024-11-16 19:24:49,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:49,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:24:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:24:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:24:49,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-16 19:24:49,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-16 19:24:49,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:49,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-16 19:24:49,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:49,525 INFO L124 PetriNetUnfolderBase]: 38/106 cut-off events. [2024-11-16 19:24:49,525 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-16 19:24:49,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 106 events. 38/106 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 32 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 229. Up to 89 conditions per place. [2024-11-16 19:24:49,527 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 32 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-11-16 19:24:49,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 218 flow [2024-11-16 19:24:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:24:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:24:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-16 19:24:49,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-16 19:24:49,528 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 146 flow. Second operand 4 states and 83 transitions. [2024-11-16 19:24:49,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 218 flow [2024-11-16 19:24:49,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:49,529 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 156 flow [2024-11-16 19:24:49,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-16 19:24:49,530 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-16 19:24:49,530 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 156 flow [2024-11-16 19:24:49,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-16 19:24:49,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:49,530 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:49,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:24:49,531 INFO L396 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)] === [2024-11-16 19:24:49,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash -541805758, now seen corresponding path program 1 times [2024-11-16 19:24:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207587460] [2024-11-16 19:24:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 19:24:51,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:51,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207587460] [2024-11-16 19:24:51,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207587460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:51,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:24:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726146881] [2024-11-16 19:24:51,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:51,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:24:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:24:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:24:51,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-16 19:24:51,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-16 19:24:51,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:51,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-16 19:24:51,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:51,971 INFO L124 PetriNetUnfolderBase]: 39/125 cut-off events. [2024-11-16 19:24:51,972 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-16 19:24:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 125 events. 39/125 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 282 event pairs, 7 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 268. Up to 41 conditions per place. [2024-11-16 19:24:51,973 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 42 selfloop transitions, 2 changer transitions 7/64 dead transitions. [2024-11-16 19:24:51,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 305 flow [2024-11-16 19:24:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:24:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:24:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-16 19:24:51,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-16 19:24:51,975 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 156 flow. Second operand 5 states and 126 transitions. [2024-11-16 19:24:51,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 305 flow [2024-11-16 19:24:51,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:51,980 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 167 flow [2024-11-16 19:24:51,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-11-16 19:24:51,981 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-11-16 19:24:51,981 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 167 flow [2024-11-16 19:24:51,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-16 19:24:51,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:51,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:51,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:24:51,982 INFO L396 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)] === [2024-11-16 19:24:51,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:51,982 INFO L85 PathProgramCache]: Analyzing trace with hash 494580512, now seen corresponding path program 2 times [2024-11-16 19:24:51,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:51,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549480429] [2024-11-16 19:24:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:51,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 19:24:53,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549480429] [2024-11-16 19:24:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549480429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:24:53,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:24:53,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:24:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778060509] [2024-11-16 19:24:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:24:53,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:24:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:24:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:24:53,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-16 19:24:53,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-16 19:24:53,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:53,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-16 19:24:53,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:24:53,842 INFO L124 PetriNetUnfolderBase]: 35/130 cut-off events. [2024-11-16 19:24:53,842 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-16 19:24:53,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 130 events. 35/130 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 309 event pairs, 10 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 327. Up to 48 conditions per place. [2024-11-16 19:24:53,843 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 41 selfloop transitions, 3 changer transitions 5/62 dead transitions. [2024-11-16 19:24:53,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 315 flow [2024-11-16 19:24:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:24:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:24:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-16 19:24:53,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-11-16 19:24:53,844 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 167 flow. Second operand 5 states and 123 transitions. [2024-11-16 19:24:53,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 315 flow [2024-11-16 19:24:53,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-16 19:24:53,846 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 184 flow [2024-11-16 19:24:53,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-11-16 19:24:53,847 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-11-16 19:24:53,847 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 184 flow [2024-11-16 19:24:53,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-16 19:24:53,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:53,847 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:24:53,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 19:24:53,848 INFO L396 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)] === [2024-11-16 19:24:53,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash 173239830, now seen corresponding path program 3 times [2024-11-16 19:24:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:53,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765699479] [2024-11-16 19:24:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:24:57,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765699479] [2024-11-16 19:24:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765699479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:24:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795523915] [2024-11-16 19:24:57,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:24:57,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:57,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:57,437 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) [2024-11-16 19:24:57,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:24:57,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:24:57,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:24:57,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 19:24:57,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:24:59,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:24:59,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 733 treesize of output 2089