./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:39:14,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:39:14,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:39:14,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:39:14,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:39:14,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:39:14,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:39:14,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:39:14,740 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:39:14,742 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:39:14,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:39:14,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:39:14,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:39:14,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:39:14,744 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:39:14,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:39:14,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:39:14,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:39:14,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:39:14,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:39:14,749 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:39:14,753 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:39:14,753 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:39:14,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:39:14,754 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:39:14,754 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:39:14,754 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:39:14,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:39:14,755 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:39:14,755 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:39:14,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:39:14,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:39:14,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:39:14,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:39:14,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:39:14,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:39:14,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:39:14,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:39:14,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:39:14,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:39:14,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:39:14,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:39:14,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2024-11-17 03:39:15,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:39:15,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:39:15,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:39:15,035 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:39:15,035 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:39:15,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-11-17 03:39:16,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:39:16,649 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:39:16,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2024-11-17 03:39:16,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f78b14cc2/c8054d1619614f83a88f0b0c6039c52b/FLAG0855266be [2024-11-17 03:39:16,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f78b14cc2/c8054d1619614f83a88f0b0c6039c52b [2024-11-17 03:39:16,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:39:16,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:39:16,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:39:16,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:39:16,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:39:16,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:16,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71691654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16, skipping insertion in model container [2024-11-17 03:39:16,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:16,730 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:39:16,903 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:39:16,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:39:16,913 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:39:16,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:39:16,950 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:39:16,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16 WrapperNode [2024-11-17 03:39:16,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:39:16,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:39:16,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:39:16,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:39:16,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:16,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:16,994 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2024-11-17 03:39:16,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:39:16,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:39:16,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:39:16,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:39:17,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,022 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 03:39:17,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,029 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:39:17,036 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:39:17,036 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:39:17,036 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:39:17,037 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (1/1) ... [2024-11-17 03:39:17,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:39:17,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:17,088 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) [2024-11-17 03:39:17,094 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 [2024-11-17 03:39:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:39:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:39:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:39:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:39:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 03:39:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:39:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:39:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:39:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:39:17,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:39:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:39:17,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:39:17,145 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:39:17,246 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:39:17,248 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:39:17,631 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:39:17,631 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:39:17,834 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:39:17,835 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:39:17,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:39:17 BoogieIcfgContainer [2024-11-17 03:39:17,835 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:39:17,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:39:17,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:39:17,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:39:17,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:39:16" (1/3) ... [2024-11-17 03:39:17,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a93df0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:39:17, skipping insertion in model container [2024-11-17 03:39:17,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:16" (2/3) ... [2024-11-17 03:39:17,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a93df0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:39:17, skipping insertion in model container [2024-11-17 03:39:17,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:39:17" (3/3) ... [2024-11-17 03:39:17,847 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-11-17 03:39:17,862 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:39:17,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-17 03:39:17,862 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:39:17,934 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 03:39:18,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 145 flow [2024-11-17 03:39:18,040 INFO L124 PetriNetUnfolderBase]: 8/59 cut-off events. [2024-11-17 03:39:18,040 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:39:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 8/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 138 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-17 03:39:18,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 145 flow [2024-11-17 03:39:18,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 58 transitions, 134 flow [2024-11-17 03:39:18,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:39:18,063 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=None, 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;@e58a40d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:39:18,063 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-17 03:39:18,067 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:39:18,067 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-17 03:39:18,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:39:18,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:18,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:39:18,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:18,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash 13385331, now seen corresponding path program 1 times [2024-11-17 03:39:18,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:18,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296405481] [2024-11-17 03:39:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:18,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296405481] [2024-11-17 03:39:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296405481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:18,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:39:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:39:18,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406947070] [2024-11-17 03:39:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:18,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:39:18,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:39:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:39:18,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-11-17 03:39:18,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-17 03:39:18,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:18,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-11-17 03:39:18,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:18,759 INFO L124 PetriNetUnfolderBase]: 1316/2123 cut-off events. [2024-11-17 03:39:18,759 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-17 03:39:18,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4136 conditions, 2123 events. 1316/2123 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13131 event pairs, 1060 based on Foata normal form. 257/1748 useless extension candidates. Maximal degree in co-relation 3828. Up to 1877 conditions per place. [2024-11-17 03:39:18,780 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 30 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-17 03:39:18,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 172 flow [2024-11-17 03:39:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:39:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:39:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-17 03:39:18,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-17 03:39:18,795 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 134 flow. Second operand 3 states and 95 transitions. [2024-11-17 03:39:18,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 172 flow [2024-11-17 03:39:18,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 03:39:18,805 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 100 flow [2024-11-17 03:39:18,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-17 03:39:18,811 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -13 predicate places. [2024-11-17 03:39:18,811 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 100 flow [2024-11-17 03:39:18,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-17 03:39:18,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:18,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:39:18,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:39:18,812 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:18,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash 13385332, now seen corresponding path program 1 times [2024-11-17 03:39:18,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:18,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876513329] [2024-11-17 03:39:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:18,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:19,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:19,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876513329] [2024-11-17 03:39:19,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876513329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:19,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:39:19,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:39:19,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815570163] [2024-11-17 03:39:19,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:19,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:39:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:39:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:39:19,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-11-17 03:39:19,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-17 03:39:19,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:19,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-11-17 03:39:19,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:19,491 INFO L124 PetriNetUnfolderBase]: 1316/2122 cut-off events. [2024-11-17 03:39:19,492 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-17 03:39:19,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 2122 events. 1316/2122 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13126 event pairs, 1060 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 4034. Up to 1877 conditions per place. [2024-11-17 03:39:19,506 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 28 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-11-17 03:39:19,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 162 flow [2024-11-17 03:39:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:39:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:39:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-17 03:39:19,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-11-17 03:39:19,510 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-11-17 03:39:19,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 162 flow [2024-11-17 03:39:19,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:39:19,513 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 102 flow [2024-11-17 03:39:19,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-17 03:39:19,514 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -13 predicate places. [2024-11-17 03:39:19,514 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 102 flow [2024-11-17 03:39:19,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-17 03:39:19,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:19,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:19,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:39:19,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:19,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -863432802, now seen corresponding path program 1 times [2024-11-17 03:39:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552459560] [2024-11-17 03:39:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:19,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:19,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552459560] [2024-11-17 03:39:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552459560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:39:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:39:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556206271] [2024-11-17 03:39:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:19,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:39:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:39:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:39:19,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-11-17 03:39:19,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-17 03:39:19,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:19,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-11-17 03:39:19,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:19,794 INFO L124 PetriNetUnfolderBase]: 792/1311 cut-off events. [2024-11-17 03:39:19,794 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-17 03:39:19,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1311 events. 792/1311 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7428 event pairs, 608 based on Foata normal form. 0/1035 useless extension candidates. Maximal degree in co-relation 2469. Up to 1134 conditions per place. [2024-11-17 03:39:19,802 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 27 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-11-17 03:39:19,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 154 flow [2024-11-17 03:39:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:39:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:39:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-17 03:39:19,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-17 03:39:19,806 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 102 flow. Second operand 4 states and 100 transitions. [2024-11-17 03:39:19,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 154 flow [2024-11-17 03:39:19,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:39:19,807 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 92 flow [2024-11-17 03:39:19,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-17 03:39:19,809 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -16 predicate places. [2024-11-17 03:39:19,809 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 92 flow [2024-11-17 03:39:19,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-17 03:39:19,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:19,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:19,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:39:19,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:19,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash -863432801, now seen corresponding path program 1 times [2024-11-17 03:39:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:19,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90472740] [2024-11-17 03:39:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:19,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:19,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90472740] [2024-11-17 03:39:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90472740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:39:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:39:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458548013] [2024-11-17 03:39:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:19,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:39:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:39:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:39:19,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-11-17 03:39:19,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-17 03:39:19,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:19,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-11-17 03:39:19,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:20,094 INFO L124 PetriNetUnfolderBase]: 792/1315 cut-off events. [2024-11-17 03:39:20,094 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-17 03:39:20,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 1315 events. 792/1315 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7462 event pairs, 608 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 2469. Up to 1139 conditions per place. [2024-11-17 03:39:20,103 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 30 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2024-11-17 03:39:20,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 164 flow [2024-11-17 03:39:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:39:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:39:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-17 03:39:20,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-11-17 03:39:20,106 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 92 flow. Second operand 4 states and 102 transitions. [2024-11-17 03:39:20,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 164 flow [2024-11-17 03:39:20,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:39:20,110 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 103 flow [2024-11-17 03:39:20,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-17 03:39:20,111 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -13 predicate places. [2024-11-17 03:39:20,111 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 103 flow [2024-11-17 03:39:20,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-17 03:39:20,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:20,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:20,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:39:20,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:20,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2125237343, now seen corresponding path program 1 times [2024-11-17 03:39:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:20,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200135286] [2024-11-17 03:39:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200135286] [2024-11-17 03:39:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200135286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421122516] [2024-11-17 03:39:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:20,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:20,327 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) [2024-11-17 03:39:20,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:39:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:20,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:39:20,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:20,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:20,667 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 22 treesize of output 18 [2024-11-17 03:39:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:20,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421122516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:20,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-11-17 03:39:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974654623] [2024-11-17 03:39:20,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:20,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:39:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:39:20,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:39:20,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-17 03:39:20,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 103 flow. Second operand has 12 states, 12 states have (on average 19.416666666666668) internal successors, (233), 12 states have internal predecessors, (233), 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) [2024-11-17 03:39:20,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:20,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-17 03:39:20,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:21,234 INFO L124 PetriNetUnfolderBase]: 1148/1947 cut-off events. [2024-11-17 03:39:21,235 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-17 03:39:21,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3621 conditions, 1947 events. 1148/1947 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11745 event pairs, 483 based on Foata normal form. 0/1578 useless extension candidates. Maximal degree in co-relation 3606. Up to 987 conditions per place. [2024-11-17 03:39:21,247 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 56 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2024-11-17 03:39:21,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 303 flow [2024-11-17 03:39:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:39:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:39:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-11-17 03:39:21,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4400921658986175 [2024-11-17 03:39:21,252 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 103 flow. Second operand 7 states and 191 transitions. [2024-11-17 03:39:21,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 303 flow [2024-11-17 03:39:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 299 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:39:21,256 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 136 flow [2024-11-17 03:39:21,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-17 03:39:21,257 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -8 predicate places. [2024-11-17 03:39:21,257 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 136 flow [2024-11-17 03:39:21,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.416666666666668) internal successors, (233), 12 states have internal predecessors, (233), 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) [2024-11-17 03:39:21,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:21,258 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:21,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:39:21,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:21,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:21,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1536461858, now seen corresponding path program 1 times [2024-11-17 03:39:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758706363] [2024-11-17 03:39:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:21,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:21,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758706363] [2024-11-17 03:39:21,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758706363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:21,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865499675] [2024-11-17 03:39:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:21,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:21,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:21,604 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) [2024-11-17 03:39:21,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:39:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:21,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:39:21,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:21,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865499675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:21,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:21,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-17 03:39:21,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540262896] [2024-11-17 03:39:21,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:21,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 03:39:21,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 03:39:21,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:39:21,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:39:21,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 136 flow. Second operand has 14 states, 14 states have (on average 16.928571428571427) internal successors, (237), 14 states have internal predecessors, (237), 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) [2024-11-17 03:39:21,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:21,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:39:21,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:22,451 INFO L124 PetriNetUnfolderBase]: 2431/3863 cut-off events. [2024-11-17 03:39:22,451 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2024-11-17 03:39:22,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9068 conditions, 3863 events. 2431/3863 cut-off events. For 2094/2094 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23477 event pairs, 1341 based on Foata normal form. 0/3272 useless extension candidates. Maximal degree in co-relation 5796. Up to 1932 conditions per place. [2024-11-17 03:39:22,479 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 90 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2024-11-17 03:39:22,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 110 transitions, 558 flow [2024-11-17 03:39:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 03:39:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 03:39:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-11-17 03:39:22,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-17 03:39:22,481 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 136 flow. Second operand 9 states and 225 transitions. [2024-11-17 03:39:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 110 transitions, 558 flow [2024-11-17 03:39:22,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 552 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:39:22,491 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 202 flow [2024-11-17 03:39:22,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-17 03:39:22,492 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2024-11-17 03:39:22,492 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 202 flow [2024-11-17 03:39:22,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.928571428571427) internal successors, (237), 14 states have internal predecessors, (237), 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) [2024-11-17 03:39:22,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:22,492 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:22,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:39:22,698 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,SelfDestructingSolverStorable5 [2024-11-17 03:39:22,699 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:22,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1648992361, now seen corresponding path program 1 times [2024-11-17 03:39:22,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:22,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994414055] [2024-11-17 03:39:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:22,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:22,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:22,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994414055] [2024-11-17 03:39:22,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994414055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:22,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181116917] [2024-11-17 03:39:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:22,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:22,933 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) [2024-11-17 03:39:22,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:39:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:22,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 03:39:23,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:23,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:39:23,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181116917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:23,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:39:23,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2024-11-17 03:39:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408366040] [2024-11-17 03:39:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:23,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:39:23,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:39:23,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:39:23,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-11-17 03:39:23,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:39:23,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:23,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-11-17 03:39:23,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:23,764 INFO L124 PetriNetUnfolderBase]: 2476/4379 cut-off events. [2024-11-17 03:39:23,764 INFO L125 PetriNetUnfolderBase]: For 2883/2883 co-relation queries the response was YES. [2024-11-17 03:39:23,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 4379 events. 2476/4379 cut-off events. For 2883/2883 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 30513 event pairs, 1344 based on Foata normal form. 0/3814 useless extension candidates. Maximal degree in co-relation 6541. Up to 2633 conditions per place. [2024-11-17 03:39:23,795 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 55 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-11-17 03:39:23,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 405 flow [2024-11-17 03:39:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:39:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:39:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-17 03:39:23,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-17 03:39:23,799 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 202 flow. Second operand 5 states and 132 transitions. [2024-11-17 03:39:23,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 405 flow [2024-11-17 03:39:23,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 397 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:39:23,807 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 219 flow [2024-11-17 03:39:23,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-17 03:39:23,809 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2024-11-17 03:39:23,812 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 219 flow [2024-11-17 03:39:23,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:39:23,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:23,812 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:23,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:39:24,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:24,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 62126011, now seen corresponding path program 1 times [2024-11-17 03:39:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824631717] [2024-11-17 03:39:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824631717] [2024-11-17 03:39:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824631717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736301250] [2024-11-17 03:39:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:24,141 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) [2024-11-17 03:39:24,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:39:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:24,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:39:24,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:24,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:24,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736301250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:24,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:24,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-17 03:39:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313149984] [2024-11-17 03:39:24,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:24,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 03:39:24,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 03:39:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:39:24,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:39:24,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 219 flow. Second operand has 14 states, 14 states have (on average 17.071428571428573) internal successors, (239), 14 states have internal predecessors, (239), 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) [2024-11-17 03:39:24,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:24,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:39:24,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:25,203 INFO L124 PetriNetUnfolderBase]: 3363/5453 cut-off events. [2024-11-17 03:39:25,203 INFO L125 PetriNetUnfolderBase]: For 3682/3682 co-relation queries the response was YES. [2024-11-17 03:39:25,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13999 conditions, 5453 events. 3363/5453 cut-off events. For 3682/3682 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 35627 event pairs, 1705 based on Foata normal form. 0/4775 useless extension candidates. Maximal degree in co-relation 9677. Up to 2816 conditions per place. [2024-11-17 03:39:25,238 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 114 selfloop transitions, 15 changer transitions 0/139 dead transitions. [2024-11-17 03:39:25,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 139 transitions, 783 flow [2024-11-17 03:39:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:39:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:39:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-17 03:39:25,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-17 03:39:25,240 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 219 flow. Second operand 11 states and 280 transitions. [2024-11-17 03:39:25,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 139 transitions, 783 flow [2024-11-17 03:39:25,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 139 transitions, 759 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:39:25,251 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 283 flow [2024-11-17 03:39:25,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=283, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-17 03:39:25,253 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2024-11-17 03:39:25,253 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 283 flow [2024-11-17 03:39:25,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.071428571428573) internal successors, (239), 14 states have internal predecessors, (239), 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) [2024-11-17 03:39:25,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:25,254 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:25,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:39:25,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:25,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:25,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1742800738, now seen corresponding path program 2 times [2024-11-17 03:39:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000104795] [2024-11-17 03:39:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000104795] [2024-11-17 03:39:25,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000104795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:25,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725206414] [2024-11-17 03:39:25,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:39:25,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:25,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:25,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:39:25,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 03:39:25,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:39:25,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 03:39:25,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:25,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-17 03:39:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:39:26,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:39:26,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725206414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:26,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:39:26,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-17 03:39:26,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791101308] [2024-11-17 03:39:26,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:26,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:39:26,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:39:26,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:39:26,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-17 03:39:26,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:39:26,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:26,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-17 03:39:26,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:26,742 INFO L124 PetriNetUnfolderBase]: 2746/4428 cut-off events. [2024-11-17 03:39:26,742 INFO L125 PetriNetUnfolderBase]: For 6905/6956 co-relation queries the response was YES. [2024-11-17 03:39:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12877 conditions, 4428 events. 2746/4428 cut-off events. For 6905/6956 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 27069 event pairs, 698 based on Foata normal form. 0/4248 useless extension candidates. Maximal degree in co-relation 8487. Up to 1607 conditions per place. [2024-11-17 03:39:26,771 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 79 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2024-11-17 03:39:26,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 662 flow [2024-11-17 03:39:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:39:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:39:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-17 03:39:26,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-17 03:39:26,773 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 283 flow. Second operand 6 states and 155 transitions. [2024-11-17 03:39:26,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 662 flow [2024-11-17 03:39:26,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 649 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-17 03:39:26,780 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 288 flow [2024-11-17 03:39:26,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-11-17 03:39:26,783 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2024-11-17 03:39:26,783 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 288 flow [2024-11-17 03:39:26,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:39:26,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:26,783 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:26,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:39:26,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:26,984 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:26,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash 785294075, now seen corresponding path program 2 times [2024-11-17 03:39:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:26,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869955416] [2024-11-17 03:39:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:26,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:27,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869955416] [2024-11-17 03:39:27,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869955416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:27,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337956276] [2024-11-17 03:39:27,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:39:27,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:27,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:27,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:39:27,247 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:39:27,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:39:27,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 03:39:27,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:27,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-17 03:39:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:39:27,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:39:27,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337956276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:27,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:27,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-17 03:39:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636644187] [2024-11-17 03:39:27,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:27,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 03:39:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 03:39:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-17 03:39:28,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-17 03:39:28,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 288 flow. Second operand has 18 states, 18 states have (on average 17.944444444444443) internal successors, (323), 18 states have internal predecessors, (323), 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) [2024-11-17 03:39:28,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:28,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-17 03:39:28,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:29,314 INFO L124 PetriNetUnfolderBase]: 3281/5161 cut-off events. [2024-11-17 03:39:29,315 INFO L125 PetriNetUnfolderBase]: For 7169/7169 co-relation queries the response was YES. [2024-11-17 03:39:29,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15307 conditions, 5161 events. 3281/5161 cut-off events. For 7169/7169 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31778 event pairs, 491 based on Foata normal form. 66/5089 useless extension candidates. Maximal degree in co-relation 10314. Up to 994 conditions per place. [2024-11-17 03:39:29,348 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 179 selfloop transitions, 18 changer transitions 0/209 dead transitions. [2024-11-17 03:39:29,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 209 transitions, 1222 flow [2024-11-17 03:39:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 03:39:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 03:39:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 418 transitions. [2024-11-17 03:39:29,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44946236559139785 [2024-11-17 03:39:29,351 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 288 flow. Second operand 15 states and 418 transitions. [2024-11-17 03:39:29,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 209 transitions, 1222 flow [2024-11-17 03:39:29,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 209 transitions, 1162 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 03:39:29,362 INFO L231 Difference]: Finished difference. Result has 87 places, 62 transitions, 335 flow [2024-11-17 03:39:29,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=335, PETRI_PLACES=87, PETRI_TRANSITIONS=62} [2024-11-17 03:39:29,363 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 27 predicate places. [2024-11-17 03:39:29,363 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 62 transitions, 335 flow [2024-11-17 03:39:29,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.944444444444443) internal successors, (323), 18 states have internal predecessors, (323), 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) [2024-11-17 03:39:29,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:29,364 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:29,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 03:39:29,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:29,567 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:29,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:29,568 INFO L85 PathProgramCache]: Analyzing trace with hash 381465843, now seen corresponding path program 1 times [2024-11-17 03:39:29,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:29,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618223390] [2024-11-17 03:39:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:29,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:29,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618223390] [2024-11-17 03:39:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618223390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034121645] [2024-11-17 03:39:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:29,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:29,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:29,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:29,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:39:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:29,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:39:29,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:29,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034121645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:29,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:29,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-17 03:39:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179825868] [2024-11-17 03:39:29,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:29,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 03:39:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 03:39:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-17 03:39:30,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:39:30,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 62 transitions, 335 flow. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 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) [2024-11-17 03:39:30,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:30,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:39:30,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:30,672 INFO L124 PetriNetUnfolderBase]: 2905/4559 cut-off events. [2024-11-17 03:39:30,672 INFO L125 PetriNetUnfolderBase]: For 10565/10644 co-relation queries the response was YES. [2024-11-17 03:39:30,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 4559 events. 2905/4559 cut-off events. For 10565/10644 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27536 event pairs, 1562 based on Foata normal form. 40/4354 useless extension candidates. Maximal degree in co-relation 10546. Up to 2644 conditions per place. [2024-11-17 03:39:30,710 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 87 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2024-11-17 03:39:30,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 822 flow [2024-11-17 03:39:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:39:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:39:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-17 03:39:30,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38548387096774195 [2024-11-17 03:39:30,712 INFO L175 Difference]: Start difference. First operand has 87 places, 62 transitions, 335 flow. Second operand 10 states and 239 transitions. [2024-11-17 03:39:30,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 822 flow [2024-11-17 03:39:30,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 729 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-17 03:39:30,723 INFO L231 Difference]: Finished difference. Result has 89 places, 68 transitions, 357 flow [2024-11-17 03:39:30,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=357, PETRI_PLACES=89, PETRI_TRANSITIONS=68} [2024-11-17 03:39:30,724 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 29 predicate places. [2024-11-17 03:39:30,724 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 68 transitions, 357 flow [2024-11-17 03:39:30,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 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) [2024-11-17 03:39:30,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:30,725 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:39:30,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 03:39:30,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:30,930 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:30,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1844461517, now seen corresponding path program 2 times [2024-11-17 03:39:30,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:30,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941339827] [2024-11-17 03:39:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:30,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:39:31,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:31,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941339827] [2024-11-17 03:39:31,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941339827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:31,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289587148] [2024-11-17 03:39:31,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:39:31,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:31,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:31,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 03:39:31,348 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:39:31,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:39:31,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 03:39:31,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:39:31,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:31,955 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 35 treesize of output 31 [2024-11-17 03:39:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:39:32,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289587148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:32,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:32,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-17 03:39:32,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160227527] [2024-11-17 03:39:32,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:32,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 03:39:32,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 03:39:32,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-11-17 03:39:32,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:39:32,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 68 transitions, 357 flow. Second operand has 23 states, 23 states have (on average 17.217391304347824) internal successors, (396), 23 states have internal predecessors, (396), 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) [2024-11-17 03:39:32,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:32,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:39:32,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:32,962 INFO L124 PetriNetUnfolderBase]: 2655/4269 cut-off events. [2024-11-17 03:39:32,962 INFO L125 PetriNetUnfolderBase]: For 6483/6513 co-relation queries the response was YES. [2024-11-17 03:39:32,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13020 conditions, 4269 events. 2655/4269 cut-off events. For 6483/6513 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 26392 event pairs, 498 based on Foata normal form. 74/4311 useless extension candidates. Maximal degree in co-relation 9338. Up to 1071 conditions per place. [2024-11-17 03:39:32,991 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 103 selfloop transitions, 15 changer transitions 0/133 dead transitions. [2024-11-17 03:39:32,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 941 flow [2024-11-17 03:39:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:39:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:39:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-11-17 03:39:32,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3986175115207373 [2024-11-17 03:39:32,992 INFO L175 Difference]: Start difference. First operand has 89 places, 68 transitions, 357 flow. Second operand 7 states and 173 transitions. [2024-11-17 03:39:32,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 941 flow [2024-11-17 03:39:33,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 932 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:39:33,003 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 398 flow [2024-11-17 03:39:33,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2024-11-17 03:39:33,003 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2024-11-17 03:39:33,004 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 398 flow [2024-11-17 03:39:33,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.217391304347824) internal successors, (396), 23 states have internal predecessors, (396), 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) [2024-11-17 03:39:33,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:33,004 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] [2024-11-17 03:39:33,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 03:39:33,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-17 03:39:33,205 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:33,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1887152625, now seen corresponding path program 1 times [2024-11-17 03:39:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:33,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436415193] [2024-11-17 03:39:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:39:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:33,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436415193] [2024-11-17 03:39:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436415193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:33,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:39:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:39:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855630084] [2024-11-17 03:39:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:33,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:39:33,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:39:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:39:33,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-17 03:39:33,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-17 03:39:33,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:33,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-17 03:39:33,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:33,661 INFO L124 PetriNetUnfolderBase]: 1964/3609 cut-off events. [2024-11-17 03:39:33,662 INFO L125 PetriNetUnfolderBase]: For 7601/7607 co-relation queries the response was YES. [2024-11-17 03:39:33,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11819 conditions, 3609 events. 1964/3609 cut-off events. For 7601/7607 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24370 event pairs, 453 based on Foata normal form. 2/3510 useless extension candidates. Maximal degree in co-relation 8477. Up to 2356 conditions per place. [2024-11-17 03:39:33,682 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 64 selfloop transitions, 4 changer transitions 1/92 dead transitions. [2024-11-17 03:39:33,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 655 flow [2024-11-17 03:39:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:39:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:39:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-17 03:39:33,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-11-17 03:39:33,684 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 398 flow. Second operand 3 states and 98 transitions. [2024-11-17 03:39:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 655 flow [2024-11-17 03:39:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 635 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-17 03:39:33,691 INFO L231 Difference]: Finished difference. Result has 92 places, 72 transitions, 410 flow [2024-11-17 03:39:33,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2024-11-17 03:39:33,691 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2024-11-17 03:39:33,692 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 410 flow [2024-11-17 03:39:33,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-17 03:39:33,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:33,692 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] [2024-11-17 03:39:33,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:39:33,692 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:33,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash 837413673, now seen corresponding path program 1 times [2024-11-17 03:39:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579282994] [2024-11-17 03:39:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:39:33,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579282994] [2024-11-17 03:39:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579282994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:39:33,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:39:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:39:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451013190] [2024-11-17 03:39:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:33,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:39:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:39:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:39:33,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-17 03:39:33,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-17 03:39:33,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:33,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-17 03:39:33,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:34,094 INFO L124 PetriNetUnfolderBase]: 2478/4122 cut-off events. [2024-11-17 03:39:34,095 INFO L125 PetriNetUnfolderBase]: For 9073/9085 co-relation queries the response was YES. [2024-11-17 03:39:34,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13832 conditions, 4122 events. 2478/4122 cut-off events. For 9073/9085 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26343 event pairs, 936 based on Foata normal form. 133/4176 useless extension candidates. Maximal degree in co-relation 10154. Up to 1824 conditions per place. [2024-11-17 03:39:34,117 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 66 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-11-17 03:39:34,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 656 flow [2024-11-17 03:39:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:39:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:39:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-17 03:39:34,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-11-17 03:39:34,118 INFO L175 Difference]: Start difference. First operand has 92 places, 72 transitions, 410 flow. Second operand 4 states and 105 transitions. [2024-11-17 03:39:34,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 656 flow [2024-11-17 03:39:34,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 636 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-17 03:39:34,133 INFO L231 Difference]: Finished difference. Result has 92 places, 68 transitions, 376 flow [2024-11-17 03:39:34,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=92, PETRI_TRANSITIONS=68} [2024-11-17 03:39:34,134 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2024-11-17 03:39:34,134 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 68 transitions, 376 flow [2024-11-17 03:39:34,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-17 03:39:34,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:34,135 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] [2024-11-17 03:39:34,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:39:34,135 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:34,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash 910474001, now seen corresponding path program 1 times [2024-11-17 03:39:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807528156] [2024-11-17 03:39:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:39:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807528156] [2024-11-17 03:39:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807528156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675461231] [2024-11-17 03:39:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:34,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:34,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:34,200 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:34,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 03:39:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:34,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:39:34,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:39:34,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:39:34,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675461231] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:34,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:39:34,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-17 03:39:34,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515600286] [2024-11-17 03:39:34,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:39:34,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:39:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:39:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:39:34,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:39:34,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 68 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:39:34,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:34,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:39:34,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:34,617 INFO L124 PetriNetUnfolderBase]: 2202/3756 cut-off events. [2024-11-17 03:39:34,617 INFO L125 PetriNetUnfolderBase]: For 7928/7935 co-relation queries the response was YES. [2024-11-17 03:39:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12476 conditions, 3756 events. 2202/3756 cut-off events. For 7928/7935 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23438 event pairs, 827 based on Foata normal form. 108/3781 useless extension candidates. Maximal degree in co-relation 9464. Up to 1748 conditions per place. [2024-11-17 03:39:34,633 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 66 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-11-17 03:39:34,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 87 transitions, 623 flow [2024-11-17 03:39:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:39:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:39:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-17 03:39:34,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-11-17 03:39:34,634 INFO L175 Difference]: Start difference. First operand has 92 places, 68 transitions, 376 flow. Second operand 5 states and 120 transitions. [2024-11-17 03:39:34,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 87 transitions, 623 flow [2024-11-17 03:39:34,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:39:34,644 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 375 flow [2024-11-17 03:39:34,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2024-11-17 03:39:34,645 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 31 predicate places. [2024-11-17 03:39:34,645 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 375 flow [2024-11-17 03:39:34,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-11-17 03:39:34,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:34,645 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] [2024-11-17 03:39:34,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 03:39:34,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 03:39:34,846 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:34,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash -567441847, now seen corresponding path program 1 times [2024-11-17 03:39:34,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:34,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741008275] [2024-11-17 03:39:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:34,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741008275] [2024-11-17 03:39:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741008275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329060728] [2024-11-17 03:39:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:35,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:35,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:35,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:35,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 03:39:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:35,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-17 03:39:35,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:35,546 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 [2024-11-17 03:39:35,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 65 [2024-11-17 03:39:35,869 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 65 treesize of output 61 [2024-11-17 03:39:35,878 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 61 treesize of output 57 [2024-11-17 03:39:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:36,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:36,411 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 177 treesize of output 173 [2024-11-17 03:39:36,415 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 173 treesize of output 169 [2024-11-17 03:39:39,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 188 [2024-11-17 03:39:39,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:39:39,361 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 236 treesize of output 240 [2024-11-17 03:39:45,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2024-11-17 03:39:45,305 INFO L349 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2024-11-17 03:39:45,306 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 296 treesize of output 258 [2024-11-17 03:39:45,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 99 [2024-11-17 03:39:45,639 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 03:39:45,640 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 128 treesize of output 118 [2024-11-17 03:39:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:46,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329060728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:39:46,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:39:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2024-11-17 03:39:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847236024] [2024-11-17 03:39:46,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:39:46,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-17 03:39:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:39:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-17 03:39:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-17 03:39:46,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:39:46,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 375 flow. Second operand has 27 states, 27 states have (on average 18.0) internal successors, (486), 27 states have internal predecessors, (486), 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) [2024-11-17 03:39:46,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:39:46,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:39:46,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:39:49,614 INFO L124 PetriNetUnfolderBase]: 2484/4204 cut-off events. [2024-11-17 03:39:49,614 INFO L125 PetriNetUnfolderBase]: For 9800/9800 co-relation queries the response was YES. [2024-11-17 03:39:49,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14196 conditions, 4204 events. 2484/4204 cut-off events. For 9800/9800 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26652 event pairs, 507 based on Foata normal form. 1/4189 useless extension candidates. Maximal degree in co-relation 9458. Up to 2389 conditions per place. [2024-11-17 03:39:49,644 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 115 selfloop transitions, 29 changer transitions 43/201 dead transitions. [2024-11-17 03:39:49,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 201 transitions, 1398 flow [2024-11-17 03:39:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 03:39:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-17 03:39:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 522 transitions. [2024-11-17 03:39:49,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36605890603085556 [2024-11-17 03:39:49,647 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 375 flow. Second operand 23 states and 522 transitions. [2024-11-17 03:39:49,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 201 transitions, 1398 flow [2024-11-17 03:39:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 201 transitions, 1372 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-17 03:39:49,665 INFO L231 Difference]: Finished difference. Result has 118 places, 83 transitions, 571 flow [2024-11-17 03:39:49,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=571, PETRI_PLACES=118, PETRI_TRANSITIONS=83} [2024-11-17 03:39:49,666 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 58 predicate places. [2024-11-17 03:39:49,667 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 83 transitions, 571 flow [2024-11-17 03:39:49,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 18.0) internal successors, (486), 27 states have internal predecessors, (486), 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) [2024-11-17 03:39:49,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:39:49,667 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] [2024-11-17 03:39:49,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 03:39:49,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 03:39:49,868 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:39:49,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:39:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1918010881, now seen corresponding path program 2 times [2024-11-17 03:39:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:39:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347939071] [2024-11-17 03:39:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:39:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:39:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:39:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:50,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:39:50,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347939071] [2024-11-17 03:39:50,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347939071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:39:50,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830382158] [2024-11-17 03:39:50,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:39:50,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:39:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:39:50,440 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:39:50,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 03:39:50,511 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:39:50,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:39:50,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 03:39:50,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:39:50,569 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 [2024-11-17 03:39:50,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 55 [2024-11-17 03:39:50,951 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 55 treesize of output 51 [2024-11-17 03:39:50,953 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 51 treesize of output 47 [2024-11-17 03:39:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:39:51,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:39:51,428 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 177 treesize of output 173 [2024-11-17 03:39:51,430 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 173 treesize of output 169 [2024-11-17 03:39:53,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2024-11-17 03:39:53,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:39:53,825 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 296 treesize of output 278 [2024-11-17 03:39:57,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 188 [2024-11-17 03:39:57,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:39:57,253 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 236 treesize of output 240 [2024-11-17 03:40:07,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 99 [2024-11-17 03:40:07,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:07,721 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 128 treesize of output 122 [2024-11-17 03:40:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830382158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:08,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-17 03:40:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102364244] [2024-11-17 03:40:08,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:08,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 03:40:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 03:40:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2024-11-17 03:40:08,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:40:08,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 83 transitions, 571 flow. Second operand has 25 states, 25 states have (on average 17.96) internal successors, (449), 25 states have internal predecessors, (449), 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) [2024-11-17 03:40:08,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:08,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:40:08,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:10,560 INFO L124 PetriNetUnfolderBase]: 2249/3797 cut-off events. [2024-11-17 03:40:10,560 INFO L125 PetriNetUnfolderBase]: For 10923/10929 co-relation queries the response was YES. [2024-11-17 03:40:10,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13632 conditions, 3797 events. 2249/3797 cut-off events. For 10923/10929 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23367 event pairs, 492 based on Foata normal form. 1/3773 useless extension candidates. Maximal degree in co-relation 13594. Up to 2573 conditions per place. [2024-11-17 03:40:10,582 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 74 selfloop transitions, 16 changer transitions 64/168 dead transitions. [2024-11-17 03:40:10,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 168 transitions, 1294 flow [2024-11-17 03:40:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 03:40:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 03:40:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 387 transitions. [2024-11-17 03:40:10,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36717267552182165 [2024-11-17 03:40:10,584 INFO L175 Difference]: Start difference. First operand has 118 places, 83 transitions, 571 flow. Second operand 17 states and 387 transitions. [2024-11-17 03:40:10,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 168 transitions, 1294 flow [2024-11-17 03:40:10,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 168 transitions, 1228 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-11-17 03:40:10,600 INFO L231 Difference]: Finished difference. Result has 125 places, 81 transitions, 564 flow [2024-11-17 03:40:10,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=564, PETRI_PLACES=125, PETRI_TRANSITIONS=81} [2024-11-17 03:40:10,601 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 65 predicate places. [2024-11-17 03:40:10,601 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 81 transitions, 564 flow [2024-11-17 03:40:10,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 17.96) internal successors, (449), 25 states have internal predecessors, (449), 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) [2024-11-17 03:40:10,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:10,602 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] [2024-11-17 03:40:10,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 03:40:10,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 03:40:10,803 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:40:10,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1047596613, now seen corresponding path program 3 times [2024-11-17 03:40:10,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:10,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509402502] [2024-11-17 03:40:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:10,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509402502] [2024-11-17 03:40:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509402502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:11,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522720907] [2024-11-17 03:40:11,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:40:11,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:11,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:11,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:40:11,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 03:40:11,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:40:11,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:40:11,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 03:40:11,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:11,624 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 [2024-11-17 03:40:12,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 55 [2024-11-17 03:40:12,036 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 55 treesize of output 51 [2024-11-17 03:40:12,038 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 51 treesize of output 47 [2024-11-17 03:40:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:12,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:12,450 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 169 treesize of output 165 [2024-11-17 03:40:12,453 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 165 treesize of output 161 [2024-11-17 03:40:14,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 99 [2024-11-17 03:40:14,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:14,583 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 128 treesize of output 122 [2024-11-17 03:40:14,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2024-11-17 03:40:14,989 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-17 03:40:14,989 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 296 treesize of output 1 [2024-11-17 03:40:14,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 188 [2024-11-17 03:40:15,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:15,039 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 236 treesize of output 240 [2024-11-17 03:40:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:16,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522720907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:16,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:16,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2024-11-17 03:40:16,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880893749] [2024-11-17 03:40:16,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:16,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 03:40:16,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 03:40:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2024-11-17 03:40:17,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-17 03:40:17,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 81 transitions, 564 flow. Second operand has 26 states, 26 states have (on average 18.03846153846154) internal successors, (469), 26 states have internal predecessors, (469), 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) [2024-11-17 03:40:17,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:17,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-17 03:40:17,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:18,693 INFO L124 PetriNetUnfolderBase]: 2141/3586 cut-off events. [2024-11-17 03:40:18,694 INFO L125 PetriNetUnfolderBase]: For 10923/10987 co-relation queries the response was YES. [2024-11-17 03:40:18,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13092 conditions, 3586 events. 2141/3586 cut-off events. For 10923/10987 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21735 event pairs, 500 based on Foata normal form. 17/3580 useless extension candidates. Maximal degree in co-relation 13050. Up to 2575 conditions per place. [2024-11-17 03:40:18,714 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 76 selfloop transitions, 16 changer transitions 43/149 dead transitions. [2024-11-17 03:40:18,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 149 transitions, 1162 flow [2024-11-17 03:40:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 03:40:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 03:40:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 355 transitions. [2024-11-17 03:40:18,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35786290322580644 [2024-11-17 03:40:18,715 INFO L175 Difference]: Start difference. First operand has 125 places, 81 transitions, 564 flow. Second operand 16 states and 355 transitions. [2024-11-17 03:40:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 149 transitions, 1162 flow [2024-11-17 03:40:18,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 149 transitions, 1089 flow, removed 16 selfloop flow, removed 17 redundant places. [2024-11-17 03:40:18,729 INFO L231 Difference]: Finished difference. Result has 120 places, 79 transitions, 533 flow [2024-11-17 03:40:18,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=533, PETRI_PLACES=120, PETRI_TRANSITIONS=79} [2024-11-17 03:40:18,730 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 60 predicate places. [2024-11-17 03:40:18,730 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 79 transitions, 533 flow [2024-11-17 03:40:18,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.03846153846154) internal successors, (469), 26 states have internal predecessors, (469), 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) [2024-11-17 03:40:18,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:18,730 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] [2024-11-17 03:40:18,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-17 03:40:18,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 03:40:18,931 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:40:18,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash -97688025, now seen corresponding path program 4 times [2024-11-17 03:40:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415720008] [2024-11-17 03:40:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:19,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:19,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415720008] [2024-11-17 03:40:19,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415720008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:19,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765898658] [2024-11-17 03:40:19,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:40:19,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:19,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:19,425 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:40:19,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 03:40:19,507 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:40:19,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:40:19,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:40:19,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:19,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:19,891 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 143 treesize of output 119 [2024-11-17 03:40:19,899 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 95 treesize of output 91 [2024-11-17 03:40:19,904 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 91 treesize of output 87 [2024-11-17 03:40:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:40:20,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:20,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:20,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 121 [2024-11-17 03:40:20,787 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 113 treesize of output 109 [2024-11-17 03:40:20,790 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 109 treesize of output 105 [2024-11-17 03:40:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:40:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765898658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:21,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2024-11-17 03:40:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435146451] [2024-11-17 03:40:21,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:21,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 03:40:21,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:21,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 03:40:21,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-11-17 03:40:21,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-17 03:40:21,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 79 transitions, 533 flow. Second operand has 26 states, 26 states have (on average 16.346153846153847) internal successors, (425), 26 states have internal predecessors, (425), 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) [2024-11-17 03:40:21,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:21,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-17 03:40:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:23,134 INFO L124 PetriNetUnfolderBase]: 4570/7160 cut-off events. [2024-11-17 03:40:23,134 INFO L125 PetriNetUnfolderBase]: For 15636/15648 co-relation queries the response was YES. [2024-11-17 03:40:23,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24714 conditions, 7160 events. 4570/7160 cut-off events. For 15636/15648 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 45480 event pairs, 610 based on Foata normal form. 6/7140 useless extension candidates. Maximal degree in co-relation 24675. Up to 3898 conditions per place. [2024-11-17 03:40:23,175 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 153 selfloop transitions, 48 changer transitions 63/272 dead transitions. [2024-11-17 03:40:23,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 272 transitions, 2071 flow [2024-11-17 03:40:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:40:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:40:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 516 transitions. [2024-11-17 03:40:23,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-11-17 03:40:23,178 INFO L175 Difference]: Start difference. First operand has 120 places, 79 transitions, 533 flow. Second operand 24 states and 516 transitions. [2024-11-17 03:40:23,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 272 transitions, 2071 flow [2024-11-17 03:40:23,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 272 transitions, 2001 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-11-17 03:40:23,212 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 841 flow [2024-11-17 03:40:23,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=841, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2024-11-17 03:40:23,213 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 74 predicate places. [2024-11-17 03:40:23,213 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 841 flow [2024-11-17 03:40:23,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.346153846153847) internal successors, (425), 26 states have internal predecessors, (425), 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) [2024-11-17 03:40:23,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:23,214 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] [2024-11-17 03:40:23,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 03:40:23,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:23,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-17 03:40:23,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1700706945, now seen corresponding path program 5 times [2024-11-17 03:40:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954474418] [2024-11-17 03:40:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:24,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954474418] [2024-11-17 03:40:24,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954474418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654019447] [2024-11-17 03:40:24,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:40:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:24,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:24,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:40:24,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 03:40:24,112 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:40:24,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:40:24,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-17 03:40:24,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:24,179 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 [2024-11-17 03:40:24,640 INFO L349 Elim1Store]: treesize reduction 33, result has 42.1 percent of original size [2024-11-17 03:40:24,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 119 treesize of output 106 [2024-11-17 03:40:24,647 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 83 treesize of output 79 [2024-11-17 03:40:24,652 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 79 treesize of output 75 [2024-11-17 03:40:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:24,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:25,271 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 139 treesize of output 135 [2024-11-17 03:40:25,274 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 135 treesize of output 131 [2024-11-17 03:40:28,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 224 [2024-11-17 03:40:28,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:28,226 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 277 treesize of output 307