./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:31:22,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:31:22,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:31:22,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:31:22,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:31:22,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:31:22,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:31:22,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:31:22,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:31:22,882 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:31:22,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:31:22,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:31:22,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:31:22,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:31:22,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:31:22,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:31:22,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:31:22,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:31:22,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:31:22,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:31:22,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:31:22,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:31:22,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:31:22,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:31:22,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:31:22,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:31:22,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:31:22,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:31:22,890 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:31:22,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:31:22,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:31:22,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:31:22,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:22,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:31:22,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:31:22,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:31:22,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:31:22,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:31:22,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:31:22,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:31:22,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:31:22,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:31:22,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-10 10:31:23,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:31:23,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:31:23,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:31:23,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:31:23,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:31:23,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-10 10:31:24,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:31:24,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:31:24,647 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-10 10:31:24,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7bca80d/7906d0ab0d624ad18cc82fb36377272f/FLAGc04c42f50 [2024-11-10 10:31:24,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d7bca80d/7906d0ab0d624ad18cc82fb36377272f [2024-11-10 10:31:24,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:31:24,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:31:24,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:24,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:31:24,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:31:24,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:24" (1/1) ... [2024-11-10 10:31:24,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d355c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:24, skipping insertion in model container [2024-11-10 10:31:24,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:24" (1/1) ... [2024-11-10 10:31:24,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:31:24,913 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-10 10:31:24,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:24,938 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:31:24,969 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-10 10:31:24,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:24,999 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:31:25,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25 WrapperNode [2024-11-10 10:31:25,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:25,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:25,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:31:25,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:31:25,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,054 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 331 [2024-11-10 10:31:25,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:25,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:31:25,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:31:25,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:31:25,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,099 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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]. [2024-11-10 10:31:25,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,106 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:31:25,112 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:31:25,112 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:31:25,112 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:31:25,113 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (1/1) ... [2024-11-10 10:31:25,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:25,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:25,155 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) [2024-11-10 10:31:25,157 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 [2024-11-10 10:31:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:31:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:31:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:31:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:31:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:31:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:31:25,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:31:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:31:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:31:25,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:31:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:31:25,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:31:25,200 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:31:25,320 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:31:25,322 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:31:25,744 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:31:25,745 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:31:26,034 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:31:26,035 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:31:26,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:26 BoogieIcfgContainer [2024-11-10 10:31:26,035 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:31:26,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:31:26,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:31:26,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:31:26,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:31:24" (1/3) ... [2024-11-10 10:31:26,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8675b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:26, skipping insertion in model container [2024-11-10 10:31:26,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:25" (2/3) ... [2024-11-10 10:31:26,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8675b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:26, skipping insertion in model container [2024-11-10 10:31:26,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:26" (3/3) ... [2024-11-10 10:31:26,043 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-10 10:31:26,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:31:26,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:31:26,059 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:31:26,125 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:31:26,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 70 transitions, 161 flow [2024-11-10 10:31:26,191 INFO L124 PetriNetUnfolderBase]: 20/67 cut-off events. [2024-11-10 10:31:26,191 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 20/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2024-11-10 10:31:26,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 70 transitions, 161 flow [2024-11-10 10:31:26,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 66 transitions, 150 flow [2024-11-10 10:31:26,210 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:31:26,218 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;@1b7a99b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:31:26,218 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:31:26,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:31:26,237 INFO L124 PetriNetUnfolderBase]: 20/65 cut-off events. [2024-11-10 10:31:26,237 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:26,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:26,238 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] [2024-11-10 10:31:26,238 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)] === [2024-11-10 10:31:26,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash -220606731, now seen corresponding path program 1 times [2024-11-10 10:31:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032280690] [2024-11-10 10:31:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:26,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:26,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:26,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032280690] [2024-11-10 10:31:26,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032280690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:26,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:26,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456212167] [2024-11-10 10:31:26,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:26,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:31:26,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:26,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:31:26,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:31:26,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-10 10:31:26,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2024-11-10 10:31:26,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:26,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-10 10:31:26,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:26,776 INFO L124 PetriNetUnfolderBase]: 1168/1730 cut-off events. [2024-11-10 10:31:26,776 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-10 10:31:26,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 1730 events. 1168/1730 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6987 event pairs, 608 based on Foata normal form. 3/1347 useless extension candidates. Maximal degree in co-relation 3018. Up to 1448 conditions per place. [2024-11-10 10:31:26,793 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 37 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2024-11-10 10:31:26,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 212 flow [2024-11-10 10:31:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:31:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:31:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 95 transitions. [2024-11-10 10:31:26,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-10 10:31:26,805 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 150 flow. Second operand 2 states and 95 transitions. [2024-11-10 10:31:26,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 212 flow [2024-11-10 10:31:26,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:31:26,811 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 126 flow [2024-11-10 10:31:26,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-11-10 10:31:26,815 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-10 10:31:26,816 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 126 flow [2024-11-10 10:31:26,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2024-11-10 10:31:26,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:26,816 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] [2024-11-10 10:31:26,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:31:26,817 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)] === [2024-11-10 10:31:26,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -565952559, now seen corresponding path program 1 times [2024-11-10 10:31:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:26,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013789600] [2024-11-10 10:31:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:27,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013789600] [2024-11-10 10:31:27,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013789600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:27,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:27,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:27,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810649503] [2024-11-10 10:31:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:27,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:27,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:27,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-10 10:31:27,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:31:27,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:27,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-10 10:31:27,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:27,467 INFO L124 PetriNetUnfolderBase]: 2356/3780 cut-off events. [2024-11-10 10:31:27,467 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-10 10:31:27,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6729 conditions, 3780 events. 2356/3780 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20007 event pairs, 608 based on Foata normal form. 1/2906 useless extension candidates. Maximal degree in co-relation 6726. Up to 1685 conditions per place. [2024-11-10 10:31:27,486 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 59 selfloop transitions, 5 changer transitions 1/88 dead transitions. [2024-11-10 10:31:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 317 flow [2024-11-10 10:31:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-10 10:31:27,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-10 10:31:27,488 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 126 flow. Second operand 3 states and 144 transitions. [2024-11-10 10:31:27,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 317 flow [2024-11-10 10:31:27,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 88 transitions, 317 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:27,491 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 159 flow [2024-11-10 10:31:27,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=54, PETRI_TRANSITIONS=64} [2024-11-10 10:31:27,492 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-10 10:31:27,492 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 159 flow [2024-11-10 10:31:27,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:31:27,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:27,492 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] [2024-11-10 10:31:27,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:31:27,493 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)] === [2024-11-10 10:31:27,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1828359628, now seen corresponding path program 1 times [2024-11-10 10:31:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661329525] [2024-11-10 10:31:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661329525] [2024-11-10 10:31:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661329525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:27,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:27,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:27,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625715947] [2024-11-10 10:31:27,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:27,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:27,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-10 10:31:27,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-10 10:31:27,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:27,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-10 10:31:27,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:28,096 INFO L124 PetriNetUnfolderBase]: 4520/7184 cut-off events. [2024-11-10 10:31:28,097 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-11-10 10:31:28,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14220 conditions, 7184 events. 4520/7184 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 41706 event pairs, 1277 based on Foata normal form. 110/5680 useless extension candidates. Maximal degree in co-relation 14215. Up to 3002 conditions per place. [2024-11-10 10:31:28,140 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 70 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-11-10 10:31:28,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 387 flow [2024-11-10 10:31:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-10 10:31:28,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-10 10:31:28,144 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 159 flow. Second operand 3 states and 144 transitions. [2024-11-10 10:31:28,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 387 flow [2024-11-10 10:31:28,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 95 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:28,149 INFO L231 Difference]: Finished difference. Result has 56 places, 65 transitions, 168 flow [2024-11-10 10:31:28,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=56, PETRI_TRANSITIONS=65} [2024-11-10 10:31:28,150 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-11-10 10:31:28,151 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 65 transitions, 168 flow [2024-11-10 10:31:28,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-10 10:31:28,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:28,151 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] [2024-11-10 10:31:28,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:31:28,151 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)] === [2024-11-10 10:31:28,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 192940310, now seen corresponding path program 1 times [2024-11-10 10:31:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:28,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889194016] [2024-11-10 10:31:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:28,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:28,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:28,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889194016] [2024-11-10 10:31:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889194016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:28,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:28,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628578217] [2024-11-10 10:31:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:28,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:28,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-10 10:31:28,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 65 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-10 10:31:28,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:28,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-10 10:31:28,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:29,419 INFO L124 PetriNetUnfolderBase]: 8373/12890 cut-off events. [2024-11-10 10:31:29,419 INFO L125 PetriNetUnfolderBase]: For 2802/2802 co-relation queries the response was YES. [2024-11-10 10:31:29,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25694 conditions, 12890 events. 8373/12890 cut-off events. For 2802/2802 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 78629 event pairs, 2924 based on Foata normal form. 452/10365 useless extension candidates. Maximal degree in co-relation 25688. Up to 5995 conditions per place. [2024-11-10 10:31:29,486 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 67 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2024-11-10 10:31:29,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 387 flow [2024-11-10 10:31:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-10 10:31:29,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-11-10 10:31:29,489 INFO L175 Difference]: Start difference. First operand has 56 places, 65 transitions, 168 flow. Second operand 3 states and 142 transitions. [2024-11-10 10:31:29,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 387 flow [2024-11-10 10:31:29,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:29,493 INFO L231 Difference]: Finished difference. Result has 58 places, 67 transitions, 191 flow [2024-11-10 10:31:29,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2024-11-10 10:31:29,494 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-10 10:31:29,494 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions, 191 flow [2024-11-10 10:31:29,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-10 10:31:29,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:29,495 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] [2024-11-10 10:31:29,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:31:29,495 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)] === [2024-11-10 10:31:29,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2065559160, now seen corresponding path program 1 times [2024-11-10 10:31:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509397040] [2024-11-10 10:31:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509397040] [2024-11-10 10:31:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509397040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:29,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:29,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630936148] [2024-11-10 10:31:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:29,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:29,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-10 10:31:29,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-10 10:31:29,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:29,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-10 10:31:29,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:30,764 INFO L124 PetriNetUnfolderBase]: 13337/19451 cut-off events. [2024-11-10 10:31:30,764 INFO L125 PetriNetUnfolderBase]: For 6531/6553 co-relation queries the response was YES. [2024-11-10 10:31:30,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42564 conditions, 19451 events. 13337/19451 cut-off events. For 6531/6553 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 114576 event pairs, 6018 based on Foata normal form. 0/15593 useless extension candidates. Maximal degree in co-relation 42557. Up to 10586 conditions per place. [2024-11-10 10:31:30,879 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 69 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2024-11-10 10:31:30,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 432 flow [2024-11-10 10:31:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-10 10:31:30,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-10 10:31:30,881 INFO L175 Difference]: Start difference. First operand has 58 places, 67 transitions, 191 flow. Second operand 3 states and 134 transitions. [2024-11-10 10:31:30,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 432 flow [2024-11-10 10:31:30,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:30,885 INFO L231 Difference]: Finished difference. Result has 61 places, 68 transitions, 218 flow [2024-11-10 10:31:30,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2024-11-10 10:31:30,885 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-11-10 10:31:30,885 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 218 flow [2024-11-10 10:31:30,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-10 10:31:30,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:30,886 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, 1] [2024-11-10 10:31:30,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:31:30,886 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)] === [2024-11-10 10:31:30,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1937960063, now seen corresponding path program 1 times [2024-11-10 10:31:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289167300] [2024-11-10 10:31:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289167300] [2024-11-10 10:31:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289167300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:31,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863622260] [2024-11-10 10:31:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:31,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:31,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-10 10:31:31,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:31,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:31,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-10 10:31:31,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:32,326 INFO L124 PetriNetUnfolderBase]: 12940/20002 cut-off events. [2024-11-10 10:31:32,327 INFO L125 PetriNetUnfolderBase]: For 9542/9726 co-relation queries the response was YES. [2024-11-10 10:31:32,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43970 conditions, 20002 events. 12940/20002 cut-off events. For 9542/9726 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 129442 event pairs, 9078 based on Foata normal form. 285/16421 useless extension candidates. Maximal degree in co-relation 43962. Up to 13552 conditions per place. [2024-11-10 10:31:32,618 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 79 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-10 10:31:32,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 476 flow [2024-11-10 10:31:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-10 10:31:32,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5457142857142857 [2024-11-10 10:31:32,620 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 218 flow. Second operand 5 states and 191 transitions. [2024-11-10 10:31:32,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 476 flow [2024-11-10 10:31:32,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:31:32,635 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 236 flow [2024-11-10 10:31:32,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2024-11-10 10:31:32,636 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-11-10 10:31:32,636 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 236 flow [2024-11-10 10:31:32,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:32,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:32,637 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, 1, 1] [2024-11-10 10:31:32,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:31:32,637 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)] === [2024-11-10 10:31:32,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -89818611, now seen corresponding path program 1 times [2024-11-10 10:31:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920903070] [2024-11-10 10:31:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:31:32,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:32,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920903070] [2024-11-10 10:31:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920903070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:32,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:32,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:32,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072839432] [2024-11-10 10:31:32,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:32,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:32,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:32,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:32,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-10 10:31:32,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:32,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:32,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-10 10:31:32,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:33,811 INFO L124 PetriNetUnfolderBase]: 13388/19552 cut-off events. [2024-11-10 10:31:33,811 INFO L125 PetriNetUnfolderBase]: For 5741/6082 co-relation queries the response was YES. [2024-11-10 10:31:33,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43049 conditions, 19552 events. 13388/19552 cut-off events. For 5741/6082 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 105888 event pairs, 5854 based on Foata normal form. 20/16351 useless extension candidates. Maximal degree in co-relation 43038. Up to 10040 conditions per place. [2024-11-10 10:31:33,925 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 67 selfloop transitions, 5 changer transitions 2/93 dead transitions. [2024-11-10 10:31:33,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 438 flow [2024-11-10 10:31:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-10 10:31:33,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-10 10:31:33,927 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 236 flow. Second operand 3 states and 130 transitions. [2024-11-10 10:31:33,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 438 flow [2024-11-10 10:31:33,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:33,931 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 236 flow [2024-11-10 10:31:33,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-11-10 10:31:33,933 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-11-10 10:31:33,933 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 236 flow [2024-11-10 10:31:33,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:33,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:33,934 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, 1] [2024-11-10 10:31:33,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:31:33,934 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)] === [2024-11-10 10:31:33,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash 487561200, now seen corresponding path program 1 times [2024-11-10 10:31:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:33,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918042753] [2024-11-10 10:31:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:34,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918042753] [2024-11-10 10:31:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918042753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:34,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314191110] [2024-11-10 10:31:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:34,590 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) [2024-11-10 10:31:34,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:31:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:34,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 10:31:34,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:34,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:31:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:35,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:35,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-10 10:31:35,555 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:31:35,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-10 10:31:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:35,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314191110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:35,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2024-11-10 10:31:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655912657] [2024-11-10 10:31:35,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:35,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 10:31:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:35,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 10:31:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2024-11-10 10:31:35,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-10 10:31:35,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 27.125) internal successors, (651), 24 states have internal predecessors, (651), 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) [2024-11-10 10:31:35,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:35,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-10 10:31:35,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:40,888 INFO L124 PetriNetUnfolderBase]: 39635/61165 cut-off events. [2024-11-10 10:31:40,889 INFO L125 PetriNetUnfolderBase]: For 35871/37948 co-relation queries the response was YES. [2024-11-10 10:31:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139952 conditions, 61165 events. 39635/61165 cut-off events. For 35871/37948 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 443814 event pairs, 5159 based on Foata normal form. 56/48829 useless extension candidates. Maximal degree in co-relation 139940. Up to 10938 conditions per place. [2024-11-10 10:31:41,444 INFO L140 encePairwiseOnDemand]: 50/70 looper letters, 309 selfloop transitions, 53 changer transitions 8/392 dead transitions. [2024-11-10 10:31:41,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 392 transitions, 1955 flow [2024-11-10 10:31:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 10:31:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 10:31:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 916 transitions. [2024-11-10 10:31:41,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5452380952380952 [2024-11-10 10:31:41,448 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 236 flow. Second operand 24 states and 916 transitions. [2024-11-10 10:31:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 392 transitions, 1955 flow [2024-11-10 10:31:41,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 392 transitions, 1895 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-10 10:31:41,475 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 691 flow [2024-11-10 10:31:41,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=691, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2024-11-10 10:31:41,476 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-11-10 10:31:41,476 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 691 flow [2024-11-10 10:31:41,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 27.125) internal successors, (651), 24 states have internal predecessors, (651), 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) [2024-11-10 10:31:41,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:41,477 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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, 1] [2024-11-10 10:31:41,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:31:41,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:41,679 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)] === [2024-11-10 10:31:41,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -874693536, now seen corresponding path program 1 times [2024-11-10 10:31:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606156142] [2024-11-10 10:31:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 10:31:41,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606156142] [2024-11-10 10:31:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606156142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390485223] [2024-11-10 10:31:41,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:41,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2024-11-10 10:31:41,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 691 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2024-11-10 10:31:41,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2024-11-10 10:31:41,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:47,263 INFO L124 PetriNetUnfolderBase]: 43050/68391 cut-off events. [2024-11-10 10:31:47,263 INFO L125 PetriNetUnfolderBase]: For 109762/113004 co-relation queries the response was YES. [2024-11-10 10:31:47,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200511 conditions, 68391 events. 43050/68391 cut-off events. For 109762/113004 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 522769 event pairs, 13372 based on Foata normal form. 692/54594 useless extension candidates. Maximal degree in co-relation 200490. Up to 30330 conditions per place. [2024-11-10 10:31:48,101 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 115 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-11-10 10:31:48,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 144 transitions, 1046 flow [2024-11-10 10:31:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-10 10:31:48,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-11-10 10:31:48,103 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 691 flow. Second operand 3 states and 142 transitions. [2024-11-10 10:31:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 144 transitions, 1046 flow [2024-11-10 10:31:48,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 144 transitions, 1016 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:48,340 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 619 flow [2024-11-10 10:31:48,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=619, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2024-11-10 10:31:48,340 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-11-10 10:31:48,340 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 619 flow [2024-11-10 10:31:48,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2024-11-10 10:31:48,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:48,341 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, 1, 1] [2024-11-10 10:31:48,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:31:48,341 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)] === [2024-11-10 10:31:48,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1496628265, now seen corresponding path program 1 times [2024-11-10 10:31:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620011911] [2024-11-10 10:31:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:31:48,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620011911] [2024-11-10 10:31:48,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620011911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:48,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:48,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:48,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862693854] [2024-11-10 10:31:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:48,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:48,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:48,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-10 10:31:48,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 619 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:31:48,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:48,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-10 10:31:48,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:55,611 INFO L124 PetriNetUnfolderBase]: 54864/83308 cut-off events. [2024-11-10 10:31:55,612 INFO L125 PetriNetUnfolderBase]: For 124774/128773 co-relation queries the response was YES. [2024-11-10 10:31:56,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245341 conditions, 83308 events. 54864/83308 cut-off events. For 124774/128773 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 601431 event pairs, 26649 based on Foata normal form. 58/66994 useless extension candidates. Maximal degree in co-relation 245318. Up to 49701 conditions per place. [2024-11-10 10:31:56,343 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 101 selfloop transitions, 6 changer transitions 2/133 dead transitions. [2024-11-10 10:31:56,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 935 flow [2024-11-10 10:31:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-10 10:31:56,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-10 10:31:56,353 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 619 flow. Second operand 3 states and 134 transitions. [2024-11-10 10:31:56,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 935 flow [2024-11-10 10:31:57,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 133 transitions, 926 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 10:31:57,013 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 568 flow [2024-11-10 10:31:57,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2024-11-10 10:31:57,015 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-11-10 10:31:57,015 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 568 flow [2024-11-10 10:31:57,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:31:57,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:57,016 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-10 10:31:57,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:31:57,016 INFO L396 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)] === [2024-11-10 10:31:57,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1747677538, now seen corresponding path program 1 times [2024-11-10 10:31:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:57,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972422768] [2024-11-10 10:31:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:57,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:31:57,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972422768] [2024-11-10 10:31:57,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972422768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517536937] [2024-11-10 10:31:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:57,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:57,963 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) [2024-11-10 10:31:57,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:31:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:58,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 10:31:58,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:58,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:58,223 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:31:58,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-10 10:31:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:31:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517536937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:58,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:58,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-11-10 10:31:58,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597888462] [2024-11-10 10:31:58,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:58,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:31:58,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:31:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:31:58,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-10 10:31:58,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 568 flow. Second operand has 18 states, 18 states have (on average 27.666666666666668) internal successors, (498), 18 states have internal predecessors, (498), 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) [2024-11-10 10:31:58,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:58,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-10 10:31:58,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:05,861 INFO L124 PetriNetUnfolderBase]: 52714/82954 cut-off events. [2024-11-10 10:32:05,861 INFO L125 PetriNetUnfolderBase]: For 142891/147811 co-relation queries the response was YES. [2024-11-10 10:32:06,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252045 conditions, 82954 events. 52714/82954 cut-off events. For 142891/147811 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 624084 event pairs, 6969 based on Foata normal form. 64/66386 useless extension candidates. Maximal degree in co-relation 252022. Up to 49400 conditions per place. [2024-11-10 10:32:06,850 INFO L140 encePairwiseOnDemand]: 50/70 looper letters, 138 selfloop transitions, 82 changer transitions 47/290 dead transitions. [2024-11-10 10:32:06,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 290 transitions, 1850 flow [2024-11-10 10:32:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 10:32:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 10:32:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 707 transitions. [2024-11-10 10:32:06,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-11-10 10:32:06,854 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 568 flow. Second operand 21 states and 707 transitions. [2024-11-10 10:32:06,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 290 transitions, 1850 flow [2024-11-10 10:32:06,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 290 transitions, 1834 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:32:06,976 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1257 flow [2024-11-10 10:32:06,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1257, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-11-10 10:32:06,980 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-11-10 10:32:06,980 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1257 flow [2024-11-10 10:32:06,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.666666666666668) internal successors, (498), 18 states have internal predecessors, (498), 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) [2024-11-10 10:32:06,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:06,981 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-10 10:32:07,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:32:07,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 10:32:07,184 INFO L396 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)] === [2024-11-10 10:32:07,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -455894076, now seen corresponding path program 2 times [2024-11-10 10:32:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007429673] [2024-11-10 10:32:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:32:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:07,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007429673] [2024-11-10 10:32:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007429673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:07,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:07,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:32:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209131546] [2024-11-10 10:32:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:07,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:32:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:32:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:32:07,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-10 10:32:07,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1257 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-10 10:32:07,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:07,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-10 10:32:07,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand