./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-1.wvr.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-commit-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:31:43,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:31:43,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:31:43,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:31:43,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:31:43,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:31:43,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:31:43,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:31:43,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:31:43,602 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:31:43,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:31:43,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:31:43,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:31:43,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:31:43,606 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:31:43,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:31:43,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:31:43,607 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:31:43,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:31:43,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:31:43,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:31:43,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:31:43,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:31:43,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:31:43,609 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:31:43,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:31:43,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:31:43,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:31:43,611 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:31:43,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:31:43,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:31:43,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:31:43,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:43,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:31:43,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:31:43,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:31:43,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:31:43,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:31:43,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:31:43,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:31:43,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:31:43,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:31:43,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-11-10 10:31:43,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:31:43,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:31:43,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:31:43,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:31:43,964 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:31:43,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-10 10:31:45,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:31:45,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:31:45,539 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-11-10 10:31:45,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411905d1e/f068b029e2e34bfaa9a3a11d7929a9b7/FLAG74eec5a22 [2024-11-10 10:31:45,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411905d1e/f068b029e2e34bfaa9a3a11d7929a9b7 [2024-11-10 10:31:45,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:31:45,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:31:45,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:45,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:31:45,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:31:45,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490cf067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45, skipping insertion in model container [2024-11-10 10:31:45,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,599 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:31:45,790 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-commit-1.wvr.c[4643,4656] [2024-11-10 10:31:45,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:45,810 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:31:45,835 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-commit-1.wvr.c[4643,4656] [2024-11-10 10:31:45,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:45,855 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:31:45,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45 WrapperNode [2024-11-10 10:31:45,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:45,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:45,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:31:45,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:31:45,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,934 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 331 [2024-11-10 10:31:45,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:45,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:31:45,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:31:45,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:31:45,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,983 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 10:31:45,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:45,999 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:46,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:46,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:46,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:46,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:31:46,007 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:31:46,007 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:31:46,007 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:31:46,008 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (1/1) ... [2024-11-10 10:31:46,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:46,050 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 10:31:46,058 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 10:31:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:31:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:31:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:31:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:31:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:31:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:31:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:31:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:31:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:31:46,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:31:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:31:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:31:46,111 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 10:31:46,227 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:31:46,234 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:31:46,778 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:31:46,778 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:31:47,105 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:31:47,106 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:31:47,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:47 BoogieIcfgContainer [2024-11-10 10:31:47,107 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:31:47,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:31:47,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:31:47,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:31:47,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:31:45" (1/3) ... [2024-11-10 10:31:47,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bbf6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:47, skipping insertion in model container [2024-11-10 10:31:47,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:45" (2/3) ... [2024-11-10 10:31:47,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bbf6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:47, skipping insertion in model container [2024-11-10 10:31:47,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:47" (3/3) ... [2024-11-10 10:31:47,115 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-11-10 10:31:47,132 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:31:47,133 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:31:47,133 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:31:47,252 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:31:47,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 135 flow [2024-11-10 10:31:47,328 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-11-10 10:31:47,329 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:47,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 12/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-11-10 10:31:47,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 135 flow [2024-11-10 10:31:47,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 53 transitions, 124 flow [2024-11-10 10:31:47,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:31:47,361 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;@229a170b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:31:47,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:31:47,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:31:47,383 INFO L124 PetriNetUnfolderBase]: 12/52 cut-off events. [2024-11-10 10:31:47,383 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:47,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:47,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:47,385 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 10:31:47,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:47,391 INFO L85 PathProgramCache]: Analyzing trace with hash 66512656, now seen corresponding path program 1 times [2024-11-10 10:31:47,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:47,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694584518] [2024-11-10 10:31:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:47,658 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 10:31:47,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:47,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694584518] [2024-11-10 10:31:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694584518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:47,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:47,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135038084] [2024-11-10 10:31:47,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:47,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:31:47,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:31:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:31:47,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-10 10:31:47,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:47,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:47,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-10 10:31:47,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:48,258 INFO L124 PetriNetUnfolderBase]: 2536/3631 cut-off events. [2024-11-10 10:31:48,259 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-10 10:31:48,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7448 conditions, 3631 events. 2536/3631 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16738 event pairs, 2134 based on Foata normal form. 3/3216 useless extension candidates. Maximal degree in co-relation 7035. Up to 3610 conditions per place. [2024-11-10 10:31:48,284 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 37 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-10 10:31:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 186 flow [2024-11-10 10:31:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:31:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:31:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 69 transitions. [2024-11-10 10:31:48,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-10 10:31:48,299 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 124 flow. Second operand 2 states and 69 transitions. [2024-11-10 10:31:48,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 186 flow [2024-11-10 10:31:48,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 174 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:31:48,313 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-10 10:31:48,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-10 10:31:48,320 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2024-11-10 10:31:48,320 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-10 10:31:48,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:48,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:48,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:48,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:31:48,322 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 10:31:48,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:48,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2057188753, now seen corresponding path program 1 times [2024-11-10 10:31:48,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:48,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597943808] [2024-11-10 10:31:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:48,643 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 10:31:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:48,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597943808] [2024-11-10 10:31:48,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597943808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:48,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:48,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417588750] [2024-11-10 10:31:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:48,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:48,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-10 10:31:48,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:48,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:48,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-10 10:31:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:49,216 INFO L124 PetriNetUnfolderBase]: 3499/4998 cut-off events. [2024-11-10 10:31:49,216 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-10 10:31:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10080 conditions, 4998 events. 3499/4998 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 25266 event pairs, 876 based on Foata normal form. 1/4374 useless extension candidates. Maximal degree in co-relation 10077. Up to 3852 conditions per place. [2024-11-10 10:31:49,248 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 56 selfloop transitions, 4 changer transitions 1/71 dead transitions. [2024-11-10 10:31:49,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 275 flow [2024-11-10 10:31:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-10 10:31:49,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906432748538012 [2024-11-10 10:31:49,253 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 3 states and 101 transitions. [2024-11-10 10:31:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 275 flow [2024-11-10 10:31:49,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:49,258 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 126 flow [2024-11-10 10:31:49,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2024-11-10 10:31:49,259 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-11-10 10:31:49,260 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 126 flow [2024-11-10 10:31:49,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:49,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:49,260 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, 1, 1] [2024-11-10 10:31:49,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:31:49,261 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 10:31:49,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1156730453, now seen corresponding path program 1 times [2024-11-10 10:31:49,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:49,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882873067] [2024-11-10 10:31:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:49,418 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 10:31:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882873067] [2024-11-10 10:31:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882873067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:49,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:49,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674691689] [2024-11-10 10:31:49,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:49,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:49,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-10 10:31:49,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 10:31:49,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:49,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-10 10:31:49,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:50,080 INFO L124 PetriNetUnfolderBase]: 4888/7046 cut-off events. [2024-11-10 10:31:50,080 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-10 10:31:50,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15093 conditions, 7046 events. 4888/7046 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 35816 event pairs, 2384 based on Foata normal form. 165/6299 useless extension candidates. Maximal degree in co-relation 15088. Up to 3648 conditions per place. [2024-11-10 10:31:50,123 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 65 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-10 10:31:50,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 322 flow [2024-11-10 10:31:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-10 10:31:50,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-11-10 10:31:50,129 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 126 flow. Second operand 3 states and 105 transitions. [2024-11-10 10:31:50,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 322 flow [2024-11-10 10:31:50,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:50,133 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 130 flow [2024-11-10 10:31:50,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-10 10:31:50,135 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-10 10:31:50,135 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 130 flow [2024-11-10 10:31:50,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 10:31:50,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:50,136 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, 1, 1] [2024-11-10 10:31:50,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:31:50,136 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 10:31:50,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -36171277, now seen corresponding path program 1 times [2024-11-10 10:31:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123476773] [2024-11-10 10:31:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:50,248 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 10:31:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123476773] [2024-11-10 10:31:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123476773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:50,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:50,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078769914] [2024-11-10 10:31:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:50,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:50,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-10 10:31:50,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 10:31:50,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:50,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-10 10:31:50,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:50,832 INFO L124 PetriNetUnfolderBase]: 3703/5368 cut-off events. [2024-11-10 10:31:50,834 INFO L125 PetriNetUnfolderBase]: For 660/660 co-relation queries the response was YES. [2024-11-10 10:31:50,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 5368 events. 3703/5368 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 26203 event pairs, 1275 based on Foata normal form. 90/4779 useless extension candidates. Maximal degree in co-relation 11737. Up to 4000 conditions per place. [2024-11-10 10:31:50,865 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 54 selfloop transitions, 2 changer transitions 5/71 dead transitions. [2024-11-10 10:31:50,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 297 flow [2024-11-10 10:31:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-10 10:31:50,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5847953216374269 [2024-11-10 10:31:50,868 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 130 flow. Second operand 3 states and 100 transitions. [2024-11-10 10:31:50,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 297 flow [2024-11-10 10:31:50,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:50,870 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 136 flow [2024-11-10 10:31:50,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-10 10:31:50,871 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-10 10:31:50,872 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 136 flow [2024-11-10 10:31:50,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 10:31:50,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:50,872 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, 1, 1, 1, 1] [2024-11-10 10:31:50,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:31:50,873 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 10:31:50,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 290870772, now seen corresponding path program 1 times [2024-11-10 10:31:50,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163413117] [2024-11-10 10:31:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:50,952 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 10:31:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:50,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163413117] [2024-11-10 10:31:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163413117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:50,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:50,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892609690] [2024-11-10 10:31:50,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:50,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:50,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:50,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:50,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-10 10:31:50,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 10:31:50,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:50,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-10 10:31:50,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:51,282 INFO L124 PetriNetUnfolderBase]: 2561/3742 cut-off events. [2024-11-10 10:31:51,283 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2024-11-10 10:31:51,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8254 conditions, 3742 events. 2561/3742 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16342 event pairs, 1346 based on Foata normal form. 62/3266 useless extension candidates. Maximal degree in co-relation 8247. Up to 2767 conditions per place. [2024-11-10 10:31:51,299 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 48 selfloop transitions, 2 changer transitions 7/67 dead transitions. [2024-11-10 10:31:51,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 287 flow [2024-11-10 10:31:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-10 10:31:51,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2024-11-10 10:31:51,301 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 136 flow. Second operand 3 states and 94 transitions. [2024-11-10 10:31:51,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 287 flow [2024-11-10 10:31:51,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:51,303 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 146 flow [2024-11-10 10:31:51,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-10 10:31:51,304 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-10 10:31:51,306 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 146 flow [2024-11-10 10:31:51,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 10:31:51,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:51,310 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, 1, 1, 1, 1] [2024-11-10 10:31:51,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:31:51,310 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 10:31:51,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash 572128732, now seen corresponding path program 1 times [2024-11-10 10:31:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649886121] [2024-11-10 10:31:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:51,493 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 10:31:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649886121] [2024-11-10 10:31:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649886121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:51,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:51,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:51,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667625092] [2024-11-10 10:31:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:51,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:51,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:51,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 10:31:51,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:51,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:51,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 10:31:51,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:51,921 INFO L124 PetriNetUnfolderBase]: 3171/4716 cut-off events. [2024-11-10 10:31:51,921 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-11-10 10:31:51,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10454 conditions, 4716 events. 3171/4716 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 22104 event pairs, 2856 based on Foata normal form. 56/4045 useless extension candidates. Maximal degree in co-relation 10446. Up to 3726 conditions per place. [2024-11-10 10:31:51,945 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 43 selfloop transitions, 2 changer transitions 29/81 dead transitions. [2024-11-10 10:31:51,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 81 transitions, 360 flow [2024-11-10 10:31:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-10 10:31:51,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4245614035087719 [2024-11-10 10:31:51,947 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 146 flow. Second operand 5 states and 121 transitions. [2024-11-10 10:31:51,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 81 transitions, 360 flow [2024-11-10 10:31:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:51,950 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 160 flow [2024-11-10 10:31:51,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-11-10 10:31:51,951 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-11-10 10:31:51,951 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 160 flow [2024-11-10 10:31:51,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:51,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:51,952 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, 1, 1, 1, 1] [2024-11-10 10:31:51,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:31:51,953 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 10:31:51,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -334366471, now seen corresponding path program 1 times [2024-11-10 10:31:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894808984] [2024-11-10 10:31:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:52,187 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 10:31:52,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:52,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894808984] [2024-11-10 10:31:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894808984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:52,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663095996] [2024-11-10 10:31:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:52,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:52,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 10:31:52,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:52,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:52,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 10:31:52,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:52,671 INFO L124 PetriNetUnfolderBase]: 3337/4978 cut-off events. [2024-11-10 10:31:52,671 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2024-11-10 10:31:52,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 4978 events. 3337/4978 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23733 event pairs, 3018 based on Foata normal form. 14/4238 useless extension candidates. Maximal degree in co-relation 11125. Up to 3723 conditions per place. [2024-11-10 10:31:52,697 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 42 selfloop transitions, 4 changer transitions 35/88 dead transitions. [2024-11-10 10:31:52,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 414 flow [2024-11-10 10:31:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-10 10:31:52,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2024-11-10 10:31:52,699 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 160 flow. Second operand 5 states and 128 transitions. [2024-11-10 10:31:52,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 414 flow [2024-11-10 10:31:52,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 406 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:52,703 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 180 flow [2024-11-10 10:31:52,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-11-10 10:31:52,704 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-11-10 10:31:52,704 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 180 flow [2024-11-10 10:31:52,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:52,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:52,705 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:52,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:31:52,705 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 10:31:52,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 240775542, now seen corresponding path program 1 times [2024-11-10 10:31:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:52,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458968187] [2024-11-10 10:31:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458968187] [2024-11-10 10:31:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458968187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:52,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:52,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:52,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027224478] [2024-11-10 10:31:52,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:52,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:52,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 10:31:52,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:52,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:52,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 10:31:52,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:53,550 INFO L124 PetriNetUnfolderBase]: 3297/4906 cut-off events. [2024-11-10 10:31:53,550 INFO L125 PetriNetUnfolderBase]: For 802/802 co-relation queries the response was YES. [2024-11-10 10:31:53,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10889 conditions, 4906 events. 3297/4906 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23284 event pairs, 2984 based on Foata normal form. 10/4170 useless extension candidates. Maximal degree in co-relation 10877. Up to 3720 conditions per place. [2024-11-10 10:31:53,582 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 41 selfloop transitions, 6 changer transitions 25/79 dead transitions. [2024-11-10 10:31:53,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 392 flow [2024-11-10 10:31:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-10 10:31:53,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41754385964912283 [2024-11-10 10:31:53,586 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 180 flow. Second operand 5 states and 119 transitions. [2024-11-10 10:31:53,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 392 flow [2024-11-10 10:31:53,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 372 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-10 10:31:53,590 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 196 flow [2024-11-10 10:31:53,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-11-10 10:31:53,593 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-10 10:31:53,594 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 196 flow [2024-11-10 10:31:53,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:53,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:53,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:53,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:31:53,596 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 10:31:53,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1977251230, now seen corresponding path program 1 times [2024-11-10 10:31:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:53,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749809858] [2024-11-10 10:31:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:53,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749809858] [2024-11-10 10:31:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749809858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094038984] [2024-11-10 10:31:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:53,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:53,871 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 10:31:53,873 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 10:31:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:54,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:31:54,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:54,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:31:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094038984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:31:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-10 10:31:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178942965] [2024-11-10 10:31:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:31:54,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-11-10 10:31:54,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 10:31:54,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:54,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-11-10 10:31:54,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:54,803 INFO L124 PetriNetUnfolderBase]: 5255/7626 cut-off events. [2024-11-10 10:31:54,804 INFO L125 PetriNetUnfolderBase]: For 2202/2202 co-relation queries the response was YES. [2024-11-10 10:31:54,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17571 conditions, 7626 events. 5255/7626 cut-off events. For 2202/2202 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35207 event pairs, 2749 based on Foata normal form. 156/6711 useless extension candidates. Maximal degree in co-relation 17558. Up to 2981 conditions per place. [2024-11-10 10:31:54,850 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 85 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2024-11-10 10:31:54,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 528 flow [2024-11-10 10:31:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:31:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:31:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-10 10:31:54,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-11-10 10:31:54,852 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 196 flow. Second operand 4 states and 139 transitions. [2024-11-10 10:31:54,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 528 flow [2024-11-10 10:31:54,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 506 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-10 10:31:54,859 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 237 flow [2024-11-10 10:31:54,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-10 10:31:54,860 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-10 10:31:54,861 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 237 flow [2024-11-10 10:31:54,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 10:31:54,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:54,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:54,881 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 10:31:55,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:55,065 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 10:31:55,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:55,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1993665834, now seen corresponding path program 1 times [2024-11-10 10:31:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202001463] [2024-11-10 10:31:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:55,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:55,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202001463] [2024-11-10 10:31:55,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202001463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:55,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290201219] [2024-11-10 10:31:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:55,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:55,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:55,325 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 10:31:55,327 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 10:31:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:55,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:31:55,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:55,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290201219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:55,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:55,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 10:31:55,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494534315] [2024-11-10 10:31:55,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:55,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:31:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:31:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:31:55,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 10:31:55,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 237 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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 10:31:55,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:55,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 10:31:55,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:56,648 INFO L124 PetriNetUnfolderBase]: 6007/8824 cut-off events. [2024-11-10 10:31:56,648 INFO L125 PetriNetUnfolderBase]: For 4187/4187 co-relation queries the response was YES. [2024-11-10 10:31:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21997 conditions, 8824 events. 6007/8824 cut-off events. For 4187/4187 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 42873 event pairs, 5125 based on Foata normal form. 2/7541 useless extension candidates. Maximal degree in co-relation 21984. Up to 7604 conditions per place. [2024-11-10 10:31:56,695 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 51 selfloop transitions, 3 changer transitions 46/107 dead transitions. [2024-11-10 10:31:56,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 579 flow [2024-11-10 10:31:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:31:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:31:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-11-10 10:31:56,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39348370927318294 [2024-11-10 10:31:56,697 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 237 flow. Second operand 7 states and 157 transitions. [2024-11-10 10:31:56,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 579 flow [2024-11-10 10:31:56,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 571 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:56,705 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 253 flow [2024-11-10 10:31:56,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-11-10 10:31:56,707 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-11-10 10:31:56,708 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 253 flow [2024-11-10 10:31:56,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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 10:31:56,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:56,708 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:56,726 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 10:31:56,910 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,SelfDestructingSolverStorable9 [2024-11-10 10:31:56,910 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 10:31:56,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:56,911 INFO L85 PathProgramCache]: Analyzing trace with hash -841397083, now seen corresponding path program 2 times [2024-11-10 10:31:56,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:56,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14282011] [2024-11-10 10:31:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 10:31:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14282011] [2024-11-10 10:31:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14282011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113985747] [2024-11-10 10:31:57,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:31:57,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:57,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:31:57,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:31:57,260 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:31:57,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:57,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:31:57,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 10:31:57,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 10:31:57,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113985747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:57,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:57,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-10 10:31:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299653390] [2024-11-10 10:31:57,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:57,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:31:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:31:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:31:57,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 10:31:57,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 10:31:57,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:57,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 10:31:57,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:58,530 INFO L124 PetriNetUnfolderBase]: 6488/9671 cut-off events. [2024-11-10 10:31:58,531 INFO L125 PetriNetUnfolderBase]: For 5787/5787 co-relation queries the response was YES. [2024-11-10 10:31:58,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24181 conditions, 9671 events. 6488/9671 cut-off events. For 5787/5787 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 48719 event pairs, 5339 based on Foata normal form. 345/8635 useless extension candidates. Maximal degree in co-relation 24163. Up to 7600 conditions per place. [2024-11-10 10:31:58,599 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 49 selfloop transitions, 6 changer transitions 57/119 dead transitions. [2024-11-10 10:31:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 691 flow [2024-11-10 10:31:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:31:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:31:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-11-10 10:31:58,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3269537480063796 [2024-11-10 10:31:58,602 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 253 flow. Second operand 11 states and 205 transitions. [2024-11-10 10:31:58,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 691 flow [2024-11-10 10:31:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 673 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-10 10:31:58,610 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 273 flow [2024-11-10 10:31:58,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=273, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-11-10 10:31:58,611 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-11-10 10:31:58,611 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 273 flow [2024-11-10 10:31:58,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 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 10:31:58,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:58,612 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:58,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:31:58,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:58,851 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 10:31:58,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash 851247586, now seen corresponding path program 3 times [2024-11-10 10:31:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854417376] [2024-11-10 10:31:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:58,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854417376] [2024-11-10 10:32:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854417376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396425497] [2024-11-10 10:32:03,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:32:03,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:03,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:03,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:32:03,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:32:03,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:32:03,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:03,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-10 10:32:03,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:04,410 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 10:32:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:06,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:14,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:14,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 379 treesize of output 381 [2024-11-10 10:32:14,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 30 [2024-11-10 10:32:14,473 INFO L349 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2024-11-10 10:32:14,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 157 [2024-11-10 10:32:14,918 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:32:14,918 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 124 treesize of output 103 [2024-11-10 10:32:15,056 INFO L349 Elim1Store]: treesize reduction 5, result has 96.4 percent of original size [2024-11-10 10:32:15,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 649 treesize of output 610 [2024-11-10 10:32:19,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:19,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 755 treesize of output 735 [2024-11-10 10:32:19,271 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-10 10:32:19,271 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 73 treesize of output 61 [2024-11-10 10:32:19,489 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2024-11-10 10:32:19,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 254 [2024-11-10 10:32:21,340 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:32:21,341 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 124 treesize of output 103 [2024-11-10 10:32:22,490 INFO L349 Elim1Store]: treesize reduction 18, result has 95.3 percent of original size [2024-11-10 10:32:22,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 558 treesize of output 770 [2024-11-10 10:32:33,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:33,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 602 treesize of output 590 [2024-11-10 10:32:33,907 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:32:33,907 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 70 treesize of output 61 [2024-11-10 10:32:34,331 INFO L349 Elim1Store]: treesize reduction 10, result has 87.7 percent of original size [2024-11-10 10:32:34,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 166 treesize of output 212 [2024-11-10 10:32:35,359 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:32:35,359 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 124 treesize of output 103 [2024-11-10 10:32:36,630 INFO L349 Elim1Store]: treesize reduction 88, result has 70.2 percent of original size [2024-11-10 10:32:36,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1571 treesize of output 1270 [2024-11-10 10:32:39,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:39,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 456 treesize of output 452 [2024-11-10 10:32:39,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 11 [2024-11-10 10:32:39,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 4 [2024-11-10 10:32:39,787 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:32:39,787 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 70 treesize of output 61 [2024-11-10 10:32:39,858 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2024-11-10 10:32:39,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 328 treesize of output 319 [2024-11-10 10:32:40,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:40,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 597 [2024-11-10 10:32:40,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 11 [2024-11-10 10:32:40,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 4 [2024-11-10 10:32:40,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 10:32:40,627 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-10 10:32:40,697 INFO L349 Elim1Store]: treesize reduction 13, result has 87.4 percent of original size [2024-11-10 10:32:40,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 335 treesize of output 348 [2024-11-10 10:32:42,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:42,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 761 treesize of output 741 [2024-11-10 10:32:42,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 10:32:42,065 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-10 10:32:42,274 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:32:42,274 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 124 treesize of output 103 [2024-11-10 10:32:42,354 INFO L349 Elim1Store]: treesize reduction 5, result has 87.8 percent of original size [2024-11-10 10:32:42,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 157 [2024-11-10 10:32:43,110 INFO L349 Elim1Store]: treesize reduction 132, result has 52.0 percent of original size [2024-11-10 10:32:43,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 405 treesize of output 433 [2024-11-10 10:32:43,273 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-10 10:32:43,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 521 treesize of output 1 [2024-11-10 10:32:43,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:43,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 375 treesize of output 377 [2024-11-10 10:32:43,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 30 [2024-11-10 10:32:43,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 30 [2024-11-10 10:32:43,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:43,450 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 61 treesize of output 65 [2024-11-10 10:32:43,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 11 [2024-11-10 10:32:43,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 4 [2024-11-10 10:32:43,755 INFO L349 Elim1Store]: treesize reduction 5, result has 92.6 percent of original size [2024-11-10 10:32:43,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 319 treesize of output 302 [2024-11-10 10:32:44,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:44,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 243 [2024-11-10 10:32:44,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 30 [2024-11-10 10:32:44,553 INFO L349 Elim1Store]: treesize reduction 17, result has 79.5 percent of original size [2024-11-10 10:32:44,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 165 [2024-11-10 10:32:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:45,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396425497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:45,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 65 [2024-11-10 10:32:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097495965] [2024-11-10 10:32:45,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:45,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-10 10:32:45,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-10 10:32:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=3744, Unknown=0, NotChecked=0, Total=4290 [2024-11-10 10:32:45,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 10:32:45,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 273 flow. Second operand has 66 states, 66 states have (on average 12.045454545454545) internal successors, (795), 66 states have internal predecessors, (795), 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 10:32:45,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:45,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 10:32:45,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand