./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:09:23,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:09:23,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:09:23,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:09:23,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:09:23,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:09:23,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:09:23,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:09:23,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:09:23,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:09:23,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:09:23,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:09:23,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:09:23,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:09:23,644 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:09:23,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:09:23,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:09:23,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:09:23,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:09:23,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:09:23,649 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:09:23,652 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:09:23,652 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:09:23,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:09:23,653 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:09:23,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:09:23,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:09:23,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:09:23,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:09:23,654 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:09:23,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:09:23,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:09:23,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:09:23,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:09:23,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:09:23,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:09:23,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:09:23,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:09:23,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:09:23,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:09:23,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:09:23,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:09:23,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-11-10 18:09:23,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:09:23,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:09:23,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:09:23,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:09:23,985 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:09:23,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-10 18:09:25,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:09:25,939 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:09:25,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-10 18:09:25,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2ee582a/f7647dcf1a724336aeb291428889861f/FLAG002407074 [2024-11-10 18:09:25,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2ee582a/f7647dcf1a724336aeb291428889861f [2024-11-10 18:09:25,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:09:25,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:09:25,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:09:25,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:09:25,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:09:25,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:09:25" (1/1) ... [2024-11-10 18:09:25,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5812435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:25, skipping insertion in model container [2024-11-10 18:09:25,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:09:25" (1/1) ... [2024-11-10 18:09:26,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:09:26,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:09:26,480 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:09:26,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:09:26,578 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:09:26,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26 WrapperNode [2024-11-10 18:09:26,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:09:26,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:09:26,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:09:26,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:09:26,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,668 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 102 [2024-11-10 18:09:26,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:09:26,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:09:26,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:09:26,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:09:26,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,728 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-10 18:09:26,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:09:26,763 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:09:26,763 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:09:26,764 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:09:26,765 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (1/1) ... [2024-11-10 18:09:26,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:09:26,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:26,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:09:26,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:09:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:09:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:09:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:09:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:09:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:09:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:09:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:09:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:09:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:09:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:09:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:09:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:09:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:09:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:09:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:09:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:09:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:09:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:09:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:09:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:09:26,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:09:26,879 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:09:27,022 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:09:27,025 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:09:27,291 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:09:27,292 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L713-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:09:27,352 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:09:27,352 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:09:27,518 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:09:27,518 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:09:27,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:09:27 BoogieIcfgContainer [2024-11-10 18:09:27,519 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:09:27,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:09:27,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:09:27,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:09:27,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:09:25" (1/3) ... [2024-11-10 18:09:27,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d83bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:09:27, skipping insertion in model container [2024-11-10 18:09:27,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:26" (2/3) ... [2024-11-10 18:09:27,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d83bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:09:27, skipping insertion in model container [2024-11-10 18:09:27,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:09:27" (3/3) ... [2024-11-10 18:09:27,533 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-11-10 18:09:27,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:09:27,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-10 18:09:27,556 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:09:27,622 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:09:27,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 100 transitions, 207 flow [2024-11-10 18:09:27,742 INFO L124 PetriNetUnfolderBase]: 32/158 cut-off events. [2024-11-10 18:09:27,743 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:09:27,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 32/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 619 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 95. Up to 6 conditions per place. [2024-11-10 18:09:27,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 100 transitions, 207 flow [2024-11-10 18:09:27,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 100 transitions, 207 flow [2024-11-10 18:09:27,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:27,789 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;@af6fbc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:27,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:09:27,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:27,795 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:09:27,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:27,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:27,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:27,797 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:27,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 11921644, now seen corresponding path program 1 times [2024-11-10 18:09:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673681918] [2024-11-10 18:09:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:28,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673681918] [2024-11-10 18:09:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673681918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:28,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:28,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:28,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120826746] [2024-11-10 18:09:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:28,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:28,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:28,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:28,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 100 [2024-11-10 18:09:28,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:28,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:28,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 100 [2024-11-10 18:09:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:28,629 INFO L124 PetriNetUnfolderBase]: 282/985 cut-off events. [2024-11-10 18:09:28,630 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:09:28,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 985 events. 282/985 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6108 event pairs, 234 based on Foata normal form. 294/1242 useless extension candidates. Maximal degree in co-relation 1502. Up to 538 conditions per place. [2024-11-10 18:09:28,643 INFO L140 encePairwiseOnDemand]: 78/100 looper letters, 47 selfloop transitions, 2 changer transitions 1/92 dead transitions. [2024-11-10 18:09:28,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 92 transitions, 291 flow [2024-11-10 18:09:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-11-10 18:09:28,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-11-10 18:09:28,665 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 207 flow. Second operand 3 states and 202 transitions. [2024-11-10 18:09:28,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 92 transitions, 291 flow [2024-11-10 18:09:28,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 92 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:28,678 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 167 flow [2024-11-10 18:09:28,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2024-11-10 18:09:28,688 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -1 predicate places. [2024-11-10 18:09:28,689 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 167 flow [2024-11-10 18:09:28,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:28,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:28,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:28,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:09:28,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:28,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash 11921645, now seen corresponding path program 1 times [2024-11-10 18:09:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:28,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98539370] [2024-11-10 18:09:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98539370] [2024-11-10 18:09:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98539370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:28,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949803780] [2024-11-10 18:09:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:28,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:28,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 100 [2024-11-10 18:09:28,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:28,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:28,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 100 [2024-11-10 18:09:28,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:29,182 INFO L124 PetriNetUnfolderBase]: 261/920 cut-off events. [2024-11-10 18:09:29,182 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:09:29,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 920 events. 261/920 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5810 event pairs, 0 based on Foata normal form. 1/872 useless extension candidates. Maximal degree in co-relation 1459. Up to 544 conditions per place. [2024-11-10 18:09:29,191 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 49 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-11-10 18:09:29,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 297 flow [2024-11-10 18:09:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-11-10 18:09:29,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-11-10 18:09:29,194 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 167 flow. Second operand 3 states and 182 transitions. [2024-11-10 18:09:29,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 297 flow [2024-11-10 18:09:29,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:09:29,201 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 173 flow [2024-11-10 18:09:29,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2024-11-10 18:09:29,202 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -1 predicate places. [2024-11-10 18:09:29,203 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 173 flow [2024-11-10 18:09:29,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:29,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:29,204 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:09:29,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:09:29,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:29,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:29,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1243809950, now seen corresponding path program 1 times [2024-11-10 18:09:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:29,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927476433] [2024-11-10 18:09:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:29,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:29,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927476433] [2024-11-10 18:09:29,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927476433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:29,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464600813] [2024-11-10 18:09:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:29,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:29,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:09:29,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:09:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:29,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:09:29,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:29,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 18:09:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:29,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:29,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464600813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:29,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:29,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-10 18:09:29,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949416086] [2024-11-10 18:09:29,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:29,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:09:29,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:29,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:09:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:09:29,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 100 [2024-11-10 18:09:29,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 173 flow. Second operand has 9 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:29,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:29,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 100 [2024-11-10 18:09:29,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:29,997 INFO L124 PetriNetUnfolderBase]: 43/165 cut-off events. [2024-11-10 18:09:29,998 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-10 18:09:29,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 165 events. 43/165 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 531 event pairs, 26 based on Foata normal form. 28/184 useless extension candidates. Maximal degree in co-relation 274. Up to 82 conditions per place. [2024-11-10 18:09:30,000 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 31 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-10 18:09:30,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 180 flow [2024-11-10 18:09:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:09:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:09:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-10 18:09:30,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-11-10 18:09:30,002 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 173 flow. Second operand 4 states and 203 transitions. [2024-11-10 18:09:30,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 180 flow [2024-11-10 18:09:30,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:09:30,006 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 82 flow [2024-11-10 18:09:30,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-10 18:09:30,008 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -41 predicate places. [2024-11-10 18:09:30,008 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 82 flow [2024-11-10 18:09:30,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:30,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:30,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-10 18:09:30,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:09:30,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:30,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:30,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 96597579, now seen corresponding path program 1 times [2024-11-10 18:09:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:30,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759930763] [2024-11-10 18:09:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:30,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:09:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:30,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:09:30,296 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:09:30,300 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 18:09:30,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-10 18:09:30,305 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-10 18:09:30,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-10 18:09:30,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-10 18:09:30,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-10 18:09:30,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:09:30,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:09:30,307 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:09:30,310 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:09:30,310 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:09:30,345 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:09:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 138 transitions, 292 flow [2024-11-10 18:09:30,400 INFO L124 PetriNetUnfolderBase]: 54/269 cut-off events. [2024-11-10 18:09:30,401 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:09:30,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 269 events. 54/269 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1233 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 162. Up to 9 conditions per place. [2024-11-10 18:09:30,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 138 transitions, 292 flow [2024-11-10 18:09:30,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 138 transitions, 292 flow [2024-11-10 18:09:30,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:30,408 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;@af6fbc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:30,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:09:30,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:30,410 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:09:30,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:30,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:30,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:30,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:30,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:30,411 INFO L85 PathProgramCache]: Analyzing trace with hash 16169836, now seen corresponding path program 1 times [2024-11-10 18:09:30,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:30,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093094738] [2024-11-10 18:09:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:30,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093094738] [2024-11-10 18:09:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093094738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:30,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:30,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204726409] [2024-11-10 18:09:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:30,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:30,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:30,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:30,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 138 [2024-11-10 18:09:30,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:30,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:30,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 138 [2024-11-10 18:09:30,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:33,028 INFO L124 PetriNetUnfolderBase]: 8431/18558 cut-off events. [2024-11-10 18:09:33,029 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-10 18:09:33,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31572 conditions, 18558 events. 8431/18558 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 176253 event pairs, 7020 based on Foata normal form. 5948/23831 useless extension candidates. Maximal degree in co-relation 12683. Up to 11646 conditions per place. [2024-11-10 18:09:33,205 INFO L140 encePairwiseOnDemand]: 110/138 looper letters, 75 selfloop transitions, 2 changer transitions 1/137 dead transitions. [2024-11-10 18:09:33,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 137 transitions, 446 flow [2024-11-10 18:09:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2024-11-10 18:09:33,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7077294685990339 [2024-11-10 18:09:33,208 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 292 flow. Second operand 3 states and 293 transitions. [2024-11-10 18:09:33,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 137 transitions, 446 flow [2024-11-10 18:09:33,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 137 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:33,215 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 240 flow [2024-11-10 18:09:33,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-11-10 18:09:33,218 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, -1 predicate places. [2024-11-10 18:09:33,218 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 240 flow [2024-11-10 18:09:33,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:33,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:33,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:33,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:09:33,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:33,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 16169837, now seen corresponding path program 1 times [2024-11-10 18:09:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:33,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974545309] [2024-11-10 18:09:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974545309] [2024-11-10 18:09:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974545309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489889543] [2024-11-10 18:09:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:33,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:33,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2024-11-10 18:09:33,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:33,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:33,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2024-11-10 18:09:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:35,468 INFO L124 PetriNetUnfolderBase]: 8087/18140 cut-off events. [2024-11-10 18:09:35,468 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-10 18:09:35,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30988 conditions, 18140 events. 8087/18140 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 175216 event pairs, 3679 based on Foata normal form. 1/17196 useless extension candidates. Maximal degree in co-relation 29270. Up to 12528 conditions per place. [2024-11-10 18:09:35,613 INFO L140 encePairwiseOnDemand]: 134/138 looper letters, 65 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-10 18:09:35,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 125 transitions, 404 flow [2024-11-10 18:09:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-11-10 18:09:35,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6014492753623188 [2024-11-10 18:09:35,616 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 240 flow. Second operand 3 states and 249 transitions. [2024-11-10 18:09:35,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 125 transitions, 404 flow [2024-11-10 18:09:35,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:09:35,644 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 250 flow [2024-11-10 18:09:35,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-11-10 18:09:35,648 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, -1 predicate places. [2024-11-10 18:09:35,648 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 250 flow [2024-11-10 18:09:35,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:35,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:35,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:09:35,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:09:35,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:35,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash 462455056, now seen corresponding path program 1 times [2024-11-10 18:09:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:35,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830052636] [2024-11-10 18:09:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:35,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:35,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830052636] [2024-11-10 18:09:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830052636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:35,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290834524] [2024-11-10 18:09:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:35,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:35,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:35,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:09:35,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:09:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:35,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:09:35,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:35,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 18:09:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:35,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290834524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:36,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-10 18:09:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107471926] [2024-11-10 18:09:36,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:36,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:09:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:09:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:09:36,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 138 [2024-11-10 18:09:36,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:36,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:36,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 138 [2024-11-10 18:09:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:38,158 INFO L124 PetriNetUnfolderBase]: 7995/17231 cut-off events. [2024-11-10 18:09:38,158 INFO L125 PetriNetUnfolderBase]: For 746/746 co-relation queries the response was YES. [2024-11-10 18:09:38,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29976 conditions, 17231 events. 7995/17231 cut-off events. For 746/746 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 161070 event pairs, 193 based on Foata normal form. 224/16871 useless extension candidates. Maximal degree in co-relation 27764. Up to 9434 conditions per place. [2024-11-10 18:09:38,272 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 118 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-10 18:09:38,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 179 transitions, 628 flow [2024-11-10 18:09:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:09:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:09:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2024-11-10 18:09:38,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-11-10 18:09:38,274 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 250 flow. Second operand 5 states and 420 transitions. [2024-11-10 18:09:38,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 179 transitions, 628 flow [2024-11-10 18:09:38,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 179 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:09:38,282 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 256 flow [2024-11-10 18:09:38,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2024-11-10 18:09:38,284 INFO L277 CegarLoopForPetriNet]: 115 programPoint places, 2 predicate places. [2024-11-10 18:09:38,284 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 256 flow [2024-11-10 18:09:38,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:38,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:38,285 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-10 18:09:38,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:09:38,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 18:09:38,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:38,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 910048013, now seen corresponding path program 1 times [2024-11-10 18:09:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140384334] [2024-11-10 18:09:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:38,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:09:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:38,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:09:38,536 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:09:38,536 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 18:09:38,538 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-10 18:09:38,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-10 18:09:38,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-10 18:09:38,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-10 18:09:38,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-10 18:09:38,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:09:38,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:09:38,539 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:09:38,540 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:09:38,540 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 18:09:38,580 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:09:38,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 176 transitions, 379 flow [2024-11-10 18:09:38,620 INFO L124 PetriNetUnfolderBase]: 81/407 cut-off events. [2024-11-10 18:09:38,621 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:09:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 407 events. 81/407 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1990 event pairs, 1 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2024-11-10 18:09:38,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 176 transitions, 379 flow [2024-11-10 18:09:38,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 176 transitions, 379 flow [2024-11-10 18:09:38,634 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:38,635 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;@af6fbc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:38,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:09:38,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:38,637 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:09:38,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:38,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:38,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:38,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:38,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash 21587820, now seen corresponding path program 1 times [2024-11-10 18:09:38,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:38,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806901636] [2024-11-10 18:09:38,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:38,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806901636] [2024-11-10 18:09:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806901636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595489766] [2024-11-10 18:09:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:38,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:38,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:38,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 176 [2024-11-10 18:09:38,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:38,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:38,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 176 [2024-11-10 18:09:38,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:10,449 INFO L124 PetriNetUnfolderBase]: 183376/327067 cut-off events. [2024-11-10 18:10:10,450 INFO L125 PetriNetUnfolderBase]: For 3985/3985 co-relation queries the response was YES. [2024-11-10 18:10:11,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576225 conditions, 327067 events. 183376/327067 cut-off events. For 3985/3985 co-relation queries the response was YES. Maximal size of possible extension queue 6368. Compared 3707258 event pairs, 152309 based on Foata normal form. 110286/426273 useless extension candidates. Maximal degree in co-relation 97767. Up to 222000 conditions per place. [2024-11-10 18:10:13,097 INFO L140 encePairwiseOnDemand]: 142/176 looper letters, 103 selfloop transitions, 2 changer transitions 1/182 dead transitions. [2024-11-10 18:10:13,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 182 transitions, 603 flow [2024-11-10 18:10:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2024-11-10 18:10:13,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-11-10 18:10:13,102 INFO L175 Difference]: Start difference. First operand has 147 places, 176 transitions, 379 flow. Second operand 3 states and 384 transitions. [2024-11-10 18:10:13,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 182 transitions, 603 flow [2024-11-10 18:10:13,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 182 transitions, 603 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:10:13,107 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 315 flow [2024-11-10 18:10:13,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-10 18:10:13,108 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, -1 predicate places. [2024-11-10 18:10:13,108 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 315 flow [2024-11-10 18:10:13,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:13,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:13,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:10:13,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:10:13,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:10:13,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash 21587821, now seen corresponding path program 1 times [2024-11-10 18:10:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169125111] [2024-11-10 18:10:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:13,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169125111] [2024-11-10 18:10:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169125111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:13,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:13,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:13,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714294355] [2024-11-10 18:10:13,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:13,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:13,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:13,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2024-11-10 18:10:13,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:13,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:13,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2024-11-10 18:10:13,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand