./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --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/pthread-ext/36_stack_cas_p0_vs_concur.i -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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:08:28,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:08:28,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:08:28,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:08:28,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:08:28,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:08:28,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:08:28,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:08:28,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:08:28,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:08:28,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:08:28,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:08:28,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:08:28,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:08:28,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:08:28,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:08:28,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:08:28,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:08:28,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:08:28,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:08:28,735 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:08:28,735 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:08:28,735 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:08:28,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:08:28,736 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:08:28,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:08:28,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:08:28,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:08:28,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:08:28,737 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:08:28,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:08:28,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:08:28,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:08:28,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:08:28,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:08:28,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:08:28,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:08:28,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:08:28,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:08:28,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:08:28,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:08:28,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:08:28,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-11-17 03:08:29,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:08:29,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:08:29,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:08:29,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:08:29,043 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:08:29,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-17 03:08:30,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:08:30,878 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:08:30,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-11-17 03:08:30,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d1c4a96/adab64bc0e474a319fe11d9d3f6c3fee/FLAGf17cd5891 [2024-11-17 03:08:30,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d1c4a96/adab64bc0e474a319fe11d9d3f6c3fee [2024-11-17 03:08:30,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:08:30,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:08:30,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:08:30,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:08:30,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:08:30,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:08:30" (1/1) ... [2024-11-17 03:08:30,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21aa6cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:30, skipping insertion in model container [2024-11-17 03:08:30,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:08:30" (1/1) ... [2024-11-17 03:08:30,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:08:31,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:08:31,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:08:31,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:08:31,501 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:08:31,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31 WrapperNode [2024-11-17 03:08:31,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:08:31,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:08:31,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:08:31,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:08:31,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,590 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 168 [2024-11-17 03:08:31,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:08:31,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:08:31,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:08:31,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:08:31,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,621 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 3, 6]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2024-11-17 03:08:31,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:08:31,637 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:08:31,637 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:08:31,638 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:08:31,638 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (1/1) ... [2024-11-17 03:08:31,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:08:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:08:31,689 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 03:08:31,692 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 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:08:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:08:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:08:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:08:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:08:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:08:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:08:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:08:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:08:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:08:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:08:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:08:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:08:31,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:08:31,746 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 03:08:31,918 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:08:31,920 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:08:32,283 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:08:32,283 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:08:32,832 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:08:32,833 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:08:32,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:08:32 BoogieIcfgContainer [2024-11-17 03:08:32,834 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:08:32,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:08:32,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:08:32,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:08:32,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:08:30" (1/3) ... [2024-11-17 03:08:32,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46495401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:08:32, skipping insertion in model container [2024-11-17 03:08:32,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:31" (2/3) ... [2024-11-17 03:08:32,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46495401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:08:32, skipping insertion in model container [2024-11-17 03:08:32,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:08:32" (3/3) ... [2024-11-17 03:08:32,846 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-11-17 03:08:32,868 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:08:32,868 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-17 03:08:32,868 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:08:33,004 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:33,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions, 136 flow [2024-11-17 03:08:33,094 INFO L124 PetriNetUnfolderBase]: 7/73 cut-off events. [2024-11-17 03:08:33,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:33,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 7/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 172 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-11-17 03:08:33,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 66 transitions, 136 flow [2024-11-17 03:08:33,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 66 transitions, 136 flow [2024-11-17 03:08:33,112 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:33,120 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;@3fc42917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:33,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-17 03:08:33,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:33,126 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:33,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:33,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:33,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:33,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:08:33,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 15447006, now seen corresponding path program 1 times [2024-11-17 03:08:33,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:33,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022750280] [2024-11-17 03:08:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:33,889 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 03:08:33,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:33,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022750280] [2024-11-17 03:08:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022750280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:33,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:33,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856852646] [2024-11-17 03:08:33,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:33,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:33,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2024-11-17 03:08:33,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 03:08:33,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:33,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2024-11-17 03:08:33,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:34,084 INFO L124 PetriNetUnfolderBase]: 55/200 cut-off events. [2024-11-17 03:08:34,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:34,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 200 events. 55/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 806 event pairs, 49 based on Foata normal form. 37/161 useless extension candidates. Maximal degree in co-relation 325. Up to 135 conditions per place. [2024-11-17 03:08:34,091 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 30 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-17 03:08:34,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 170 flow [2024-11-17 03:08:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:34,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 88 transitions. [2024-11-17 03:08:34,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 03:08:34,104 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 136 flow. Second operand 2 states and 88 transitions. [2024-11-17 03:08:34,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 170 flow [2024-11-17 03:08:34,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:34,109 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 110 flow [2024-11-17 03:08:34,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-17 03:08:34,114 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2024-11-17 03:08:34,114 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 110 flow [2024-11-17 03:08:34,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 03:08:34,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:34,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 03:08:34,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:08:34,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:08:34,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1312602149, now seen corresponding path program 1 times [2024-11-17 03:08:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588152213] [2024-11-17 03:08:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:34,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:34,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:34,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:34,567 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:34,568 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-11-17 03:08:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-11-17 03:08:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-11-17 03:08:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-11-17 03:08:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-11-17 03:08:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-11-17 03:08:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-11-17 03:08:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-11-17 03:08:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-11-17 03:08:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (50 of 60 remaining) [2024-11-17 03:08:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 60 remaining) [2024-11-17 03:08:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 60 remaining) [2024-11-17 03:08:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-11-17 03:08:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-11-17 03:08:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-11-17 03:08:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-11-17 03:08:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (43 of 60 remaining) [2024-11-17 03:08:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (42 of 60 remaining) [2024-11-17 03:08:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-11-17 03:08:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-11-17 03:08:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-11-17 03:08:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-11-17 03:08:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-11-17 03:08:34,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-11-17 03:08:34,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-11-17 03:08:34,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-11-17 03:08:34,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-11-17 03:08:34,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-11-17 03:08:34,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-11-17 03:08:34,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-11-17 03:08:34,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 60 remaining) [2024-11-17 03:08:34,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-11-17 03:08:34,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-11-17 03:08:34,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (20 of 60 remaining) [2024-11-17 03:08:34,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-11-17 03:08:34,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-11-17 03:08:34,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-11-17 03:08:34,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-11-17 03:08:34,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-11-17 03:08:34,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-11-17 03:08:34,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 60 remaining) [2024-11-17 03:08:34,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (12 of 60 remaining) [2024-11-17 03:08:34,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-11-17 03:08:34,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-11-17 03:08:34,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-11-17 03:08:34,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-11-17 03:08:34,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-11-17 03:08:34,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-11-17 03:08:34,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-11-17 03:08:34,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-11-17 03:08:34,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-11-17 03:08:34,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-11-17 03:08:34,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-11-17 03:08:34,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-11-17 03:08:34,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:08:34,582 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:08:34,585 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:34,585 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:08:34,680 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:34,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 122 transitions, 254 flow [2024-11-17 03:08:34,720 INFO L124 PetriNetUnfolderBase]: 13/137 cut-off events. [2024-11-17 03:08:34,721 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:08:34,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 13/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 511 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2024-11-17 03:08:34,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 122 transitions, 254 flow [2024-11-17 03:08:34,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 122 transitions, 254 flow [2024-11-17 03:08:34,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:34,735 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;@3fc42917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:34,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-11-17 03:08:34,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:34,740 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:34,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:34,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:34,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:34,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-17 03:08:34,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 19202654, now seen corresponding path program 1 times [2024-11-17 03:08:34,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:34,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689179355] [2024-11-17 03:08:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:35,151 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 03:08:35,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:35,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689179355] [2024-11-17 03:08:35,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689179355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:35,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:35,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:35,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390643960] [2024-11-17 03:08:35,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:35,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:35,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:35,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:35,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 122 [2024-11-17 03:08:35,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 03:08:35,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:35,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 122 [2024-11-17 03:08:35,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:36,333 INFO L124 PetriNetUnfolderBase]: 3609/7240 cut-off events. [2024-11-17 03:08:36,334 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-17 03:08:36,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 7240 events. 3609/7240 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 57628 event pairs, 3291 based on Foata normal form. 1313/5267 useless extension candidates. Maximal degree in co-relation 12087. Up to 5715 conditions per place. [2024-11-17 03:08:36,413 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 57 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2024-11-17 03:08:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 326 flow [2024-11-17 03:08:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2024-11-17 03:08:36,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6680327868852459 [2024-11-17 03:08:36,418 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 254 flow. Second operand 2 states and 163 transitions. [2024-11-17 03:08:36,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 326 flow [2024-11-17 03:08:36,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:36,423 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 212 flow [2024-11-17 03:08:36,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-11-17 03:08:36,424 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -13 predicate places. [2024-11-17 03:08:36,424 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 212 flow [2024-11-17 03:08:36,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 03:08:36,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:36,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:36,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:08:36,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-17 03:08:36,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:36,426 INFO L85 PathProgramCache]: Analyzing trace with hash -543634579, now seen corresponding path program 1 times [2024-11-17 03:08:36,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:36,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865363298] [2024-11-17 03:08:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:37,093 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 03:08:37,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:37,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865363298] [2024-11-17 03:08:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865363298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:37,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:37,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774146156] [2024-11-17 03:08:37,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:37,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:37,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 122 [2024-11-17 03:08:37,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 03:08:37,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:37,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 122 [2024-11-17 03:08:37,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:38,917 INFO L124 PetriNetUnfolderBase]: 7152/13683 cut-off events. [2024-11-17 03:08:38,917 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-17 03:08:38,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25059 conditions, 13683 events. 7152/13683 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 110794 event pairs, 2576 based on Foata normal form. 0/7915 useless extension candidates. Maximal degree in co-relation 25054. Up to 6474 conditions per place. [2024-11-17 03:08:39,046 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 106 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2024-11-17 03:08:39,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 545 flow [2024-11-17 03:08:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-17 03:08:39,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2024-11-17 03:08:39,050 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 212 flow. Second operand 3 states and 237 transitions. [2024-11-17 03:08:39,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 545 flow [2024-11-17 03:08:39,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 151 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:39,055 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 284 flow [2024-11-17 03:08:39,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-17 03:08:39,056 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -9 predicate places. [2024-11-17 03:08:39,056 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 284 flow [2024-11-17 03:08:39,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 03:08:39,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:39,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:39,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:08:39,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-17 03:08:39,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash -543634578, now seen corresponding path program 1 times [2024-11-17 03:08:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:39,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096633485] [2024-11-17 03:08:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:39,535 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 03:08:39,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:39,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096633485] [2024-11-17 03:08:39,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096633485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:39,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:39,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:39,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499750724] [2024-11-17 03:08:39,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:39,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:39,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 122 [2024-11-17 03:08:39,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 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 03:08:39,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:39,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 122 [2024-11-17 03:08:39,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:41,021 INFO L124 PetriNetUnfolderBase]: 5509/11112 cut-off events. [2024-11-17 03:08:41,021 INFO L125 PetriNetUnfolderBase]: For 1733/1802 co-relation queries the response was YES. [2024-11-17 03:08:41,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21608 conditions, 11112 events. 5509/11112 cut-off events. For 1733/1802 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 90803 event pairs, 1883 based on Foata normal form. 780/7629 useless extension candidates. Maximal degree in co-relation 21601. Up to 7271 conditions per place. [2024-11-17 03:08:41,114 INFO L140 encePairwiseOnDemand]: 114/122 looper letters, 85 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-17 03:08:41,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 131 transitions, 513 flow [2024-11-17 03:08:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2024-11-17 03:08:41,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5901639344262295 [2024-11-17 03:08:41,117 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 284 flow. Second operand 3 states and 216 transitions. [2024-11-17 03:08:41,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 131 transitions, 513 flow [2024-11-17 03:08:41,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:41,127 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 262 flow [2024-11-17 03:08:41,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2024-11-17 03:08:41,128 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -15 predicate places. [2024-11-17 03:08:41,128 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 262 flow [2024-11-17 03:08:41,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 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 03:08:41,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:41,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:41,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:08:41,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err20ASSERT_VIOLATIONARRAY_INDEX === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-17 03:08:41,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 904716722, now seen corresponding path program 1 times [2024-11-17 03:08:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:41,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24731826] [2024-11-17 03:08:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:41,676 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 03:08:41,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:41,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24731826] [2024-11-17 03:08:41,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24731826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:41,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:41,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:08:41,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110726258] [2024-11-17 03:08:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:41,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:08:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:08:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:08:41,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 122 [2024-11-17 03:08:41,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 03:08:41,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:41,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 122 [2024-11-17 03:08:41,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:43,405 INFO L124 PetriNetUnfolderBase]: 7215/13966 cut-off events. [2024-11-17 03:08:43,405 INFO L125 PetriNetUnfolderBase]: For 1700/1865 co-relation queries the response was YES. [2024-11-17 03:08:43,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26928 conditions, 13966 events. 7215/13966 cut-off events. For 1700/1865 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 113799 event pairs, 980 based on Foata normal form. 0/8129 useless extension candidates. Maximal degree in co-relation 26921. Up to 10145 conditions per place. [2024-11-17 03:08:43,483 INFO L140 encePairwiseOnDemand]: 113/122 looper letters, 126 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2024-11-17 03:08:43,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 175 transitions, 711 flow [2024-11-17 03:08:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:08:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:08:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 397 transitions. [2024-11-17 03:08:43,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5423497267759563 [2024-11-17 03:08:43,486 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 262 flow. Second operand 6 states and 397 transitions. [2024-11-17 03:08:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 175 transitions, 711 flow [2024-11-17 03:08:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 175 transitions, 701 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:43,497 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 331 flow [2024-11-17 03:08:43,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-11-17 03:08:43,498 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -8 predicate places. [2024-11-17 03:08:43,498 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 331 flow [2024-11-17 03:08:43,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 03:08:43,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:43,499 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:08:43,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:08:43,499 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-11-17 03:08:43,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 322565950, now seen corresponding path program 1 times [2024-11-17 03:08:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945313539] [2024-11-17 03:08:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:43,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:43,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:43,797 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:43,797 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (88 of 89 remaining) [2024-11-17 03:08:43,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 89 remaining) [2024-11-17 03:08:43,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 89 remaining) [2024-11-17 03:08:43,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 89 remaining) [2024-11-17 03:08:43,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 89 remaining) [2024-11-17 03:08:43,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 89 remaining) [2024-11-17 03:08:43,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 89 remaining) [2024-11-17 03:08:43,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 89 remaining) [2024-11-17 03:08:43,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 89 remaining) [2024-11-17 03:08:43,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (79 of 89 remaining) [2024-11-17 03:08:43,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 89 remaining) [2024-11-17 03:08:43,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (72 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (71 of 89 remaining) [2024-11-17 03:08:43,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 89 remaining) [2024-11-17 03:08:43,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 89 remaining) [2024-11-17 03:08:43,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 89 remaining) [2024-11-17 03:08:43,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 89 remaining) [2024-11-17 03:08:43,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 89 remaining) [2024-11-17 03:08:43,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 89 remaining) [2024-11-17 03:08:43,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 89 remaining) [2024-11-17 03:08:43,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 89 remaining) [2024-11-17 03:08:43,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 89 remaining) [2024-11-17 03:08:43,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 89 remaining) [2024-11-17 03:08:43,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 89 remaining) [2024-11-17 03:08:43,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 89 remaining) [2024-11-17 03:08:43,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (58 of 89 remaining) [2024-11-17 03:08:43,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 89 remaining) [2024-11-17 03:08:43,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 89 remaining) [2024-11-17 03:08:43,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 89 remaining) [2024-11-17 03:08:43,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (49 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 89 remaining) [2024-11-17 03:08:43,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (42 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (41 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 89 remaining) [2024-11-17 03:08:43,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 89 remaining) [2024-11-17 03:08:43,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 89 remaining) [2024-11-17 03:08:43,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 89 remaining) [2024-11-17 03:08:43,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 89 remaining) [2024-11-17 03:08:43,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 89 remaining) [2024-11-17 03:08:43,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 89 remaining) [2024-11-17 03:08:43,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 89 remaining) [2024-11-17 03:08:43,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 89 remaining) [2024-11-17 03:08:43,814 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 89 remaining) [2024-11-17 03:08:43,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 89 remaining) [2024-11-17 03:08:43,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 89 remaining) [2024-11-17 03:08:43,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 89 remaining) [2024-11-17 03:08:43,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 89 remaining) [2024-11-17 03:08:43,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 89 remaining) [2024-11-17 03:08:43,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (20 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 89 remaining) [2024-11-17 03:08:43,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONARRAY_INDEX (12 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 89 remaining) [2024-11-17 03:08:43,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 89 remaining) [2024-11-17 03:08:43,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 89 remaining) [2024-11-17 03:08:43,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 89 remaining) [2024-11-17 03:08:43,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 89 remaining) [2024-11-17 03:08:43,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 89 remaining) [2024-11-17 03:08:43,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:08:43,819 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 03:08:43,819 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:43,822 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:08:43,921 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:43,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 178 transitions, 374 flow [2024-11-17 03:08:43,957 INFO L124 PetriNetUnfolderBase]: 19/201 cut-off events. [2024-11-17 03:08:43,958 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:08:43,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 201 events. 19/201 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 873 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2024-11-17 03:08:43,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 178 transitions, 374 flow [2024-11-17 03:08:43,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 178 transitions, 374 flow [2024-11-17 03:08:43,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:43,966 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;@3fc42917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:43,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2024-11-17 03:08:43,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:43,968 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:43,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:43,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:43,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:43,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-11-17 03:08:43,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:43,969 INFO L85 PathProgramCache]: Analyzing trace with hash 24682206, now seen corresponding path program 1 times [2024-11-17 03:08:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:43,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522488309] [2024-11-17 03:08:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:43,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:44,239 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 03:08:44,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:44,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522488309] [2024-11-17 03:08:44,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522488309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:44,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:44,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:44,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096589973] [2024-11-17 03:08:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:44,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:44,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:44,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 178 [2024-11-17 03:08:44,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 374 flow. Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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 03:08:44,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:44,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 178 [2024-11-17 03:08:44,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:05,741 INFO L124 PetriNetUnfolderBase]: 150765/239808 cut-off events. [2024-11-17 03:09:05,741 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-11-17 03:09:06,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448153 conditions, 239808 events. 150765/239808 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 6621. Compared 2349801 event pairs, 138281 based on Foata normal form. 42691/166297 useless extension candidates. Maximal degree in co-relation 90965. Up to 205557 conditions per place. [2024-11-17 03:09:07,388 INFO L140 encePairwiseOnDemand]: 158/178 looper letters, 84 selfloop transitions, 0 changer transitions 0/149 dead transitions. [2024-11-17 03:09:07,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 149 transitions, 484 flow [2024-11-17 03:09:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:09:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:09:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 238 transitions. [2024-11-17 03:09:07,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685393258426966 [2024-11-17 03:09:07,389 INFO L175 Difference]: Start difference. First operand has 169 places, 178 transitions, 374 flow. Second operand 2 states and 238 transitions. [2024-11-17 03:09:07,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 149 transitions, 484 flow [2024-11-17 03:09:07,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 482 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:07,394 INFO L231 Difference]: Finished difference. Result has 151 places, 149 transitions, 314 flow [2024-11-17 03:09:07,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=314, PETRI_PLACES=151, PETRI_TRANSITIONS=149} [2024-11-17 03:09:07,396 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -18 predicate places. [2024-11-17 03:09:07,396 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 149 transitions, 314 flow [2024-11-17 03:09:07,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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 03:09:07,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:07,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:07,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:09:07,397 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-11-17 03:09:07,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 522506532, now seen corresponding path program 1 times [2024-11-17 03:09:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:07,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569348571] [2024-11-17 03:09:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:07,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:07,884 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 03:09:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:07,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569348571] [2024-11-17 03:09:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569348571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748529129] [2024-11-17 03:09:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:07,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:07,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2024-11-17 03:09:07,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 03:09:07,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:07,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2024-11-17 03:09:07,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand