./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_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_71-funloop_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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:09:31,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:09:31,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:09:31,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:09:31,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:09:31,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:09:31,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:09:31,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:09:31,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:09:31,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:09:31,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:09:31,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:09:31,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:09:31,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:09:31,875 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:09:31,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:09:31,875 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:09:31,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:09:31,876 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:09:31,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:09:31,877 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:09:31,880 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:09:31,880 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:09:31,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:09:31,881 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:09:31,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:09:31,881 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:09:31,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:09:31,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:09:31,882 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:09:31,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:09:31,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:09:31,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:09:31,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:09:31,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:09:31,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:09:31,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:09:31,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:09:31,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:09:31,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:09:31,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:09:31,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:09:31,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-10 18:09:32,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:09:32,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:09:32,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:09:32,127 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:09:32,128 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:09:32,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-10 18:09:33,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:09:33,746 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:09:33,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-10 18:09:33,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15178fa72/c78c2469149a4d819bcaa48a637c5197/FLAG7fe9b4b7c [2024-11-10 18:09:33,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15178fa72/c78c2469149a4d819bcaa48a637c5197 [2024-11-10 18:09:33,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:09:33,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:09:33,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:09:33,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:09:33,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:09:33,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:09:33" (1/1) ... [2024-11-10 18:09:33,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479a79f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:33, skipping insertion in model container [2024-11-10 18:09:33,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:09:33" (1/1) ... [2024-11-10 18:09:33,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:09:34,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:09:34,282 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:09:34,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:09:34,377 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:09:34,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34 WrapperNode [2024-11-10 18:09:34,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:09:34,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:09:34,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:09:34,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:09:34,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,446 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 324 [2024-11-10 18:09:34,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:09:34,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:09:34,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:09:34,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:09:34,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,491 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 2, 5, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 0, 5, 60]. The 7 writes are split as follows [0, 1, 0, 6]. [2024-11-10 18:09:34,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,506 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:09:34,523 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:09:34,523 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:09:34,523 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:09:34,524 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (1/1) ... [2024-11-10 18:09:34,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:09:34,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:34,558 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 18:09:34,571 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 18:09:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:09:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:09:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:09:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:09:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:09:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:09:34,614 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:09:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:09:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:09:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:09:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:09:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:09:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:09:34,617 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 18:09:34,736 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:09:34,738 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:09:35,082 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:09:35,083 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:09:35,162 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:09:35,163 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:09:35,473 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:09:35,473 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:09:35,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:09:35 BoogieIcfgContainer [2024-11-10 18:09:35,474 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:09:35,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:09:35,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:09:35,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:09:35,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:09:33" (1/3) ... [2024-11-10 18:09:35,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d9469e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:09:35, skipping insertion in model container [2024-11-10 18:09:35,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:09:34" (2/3) ... [2024-11-10 18:09:35,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d9469e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:09:35, skipping insertion in model container [2024-11-10 18:09:35,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:09:35" (3/3) ... [2024-11-10 18:09:35,482 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-10 18:09:35,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:09:35,498 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-10 18:09:35,498 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:09:35,556 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:09:35,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 219 transitions, 445 flow [2024-11-10 18:09:35,700 INFO L124 PetriNetUnfolderBase]: 78/360 cut-off events. [2024-11-10 18:09:35,701 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:09:35,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 360 events. 78/360 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2049 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2024-11-10 18:09:35,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 219 transitions, 445 flow [2024-11-10 18:09:35,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 219 transitions, 445 flow [2024-11-10 18:09:35,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:35,733 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;@596689a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:35,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-10 18:09:35,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:35,739 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2024-11-10 18:09:35,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:35,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:35,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:09:35,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:35,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash -214072052, now seen corresponding path program 1 times [2024-11-10 18:09:35,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:35,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635961737] [2024-11-10 18:09:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:35,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:35,947 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 18:09:35,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635961737] [2024-11-10 18:09:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635961737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:09:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694422370] [2024-11-10 18:09:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:35,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:09:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:09:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:09:35,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 219 [2024-11-10 18:09:36,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 219 transitions, 445 flow. Second operand has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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 18:09:36,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:36,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 219 [2024-11-10 18:09:36,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:36,456 INFO L124 PetriNetUnfolderBase]: 993/3605 cut-off events. [2024-11-10 18:09:36,456 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 18:09:36,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 3605 events. 993/3605 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 33103 event pairs, 840 based on Foata normal form. 1067/4202 useless extension candidates. Maximal degree in co-relation 5308. Up to 1874 conditions per place. [2024-11-10 18:09:36,479 INFO L140 encePairwiseOnDemand]: 178/219 looper letters, 69 selfloop transitions, 0 changer transitions 0/175 dead transitions. [2024-11-10 18:09:36,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 175 transitions, 495 flow [2024-11-10 18:09:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:09:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:09:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2024-11-10 18:09:36,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7351598173515982 [2024-11-10 18:09:36,491 INFO L175 Difference]: Start difference. First operand has 174 places, 219 transitions, 445 flow. Second operand 2 states and 322 transitions. [2024-11-10 18:09:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 175 transitions, 495 flow [2024-11-10 18:09:36,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 175 transitions, 495 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:36,497 INFO L231 Difference]: Finished difference. Result has 172 places, 175 transitions, 357 flow [2024-11-10 18:09:36,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=357, PETRI_PLACES=172, PETRI_TRANSITIONS=175} [2024-11-10 18:09:36,503 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, -2 predicate places. [2024-11-10 18:09:36,503 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 175 transitions, 357 flow [2024-11-10 18:09:36,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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 18:09:36,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:36,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:36,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:09:36,504 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:36,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1999965712, now seen corresponding path program 1 times [2024-11-10 18:09:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946008119] [2024-11-10 18:09:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:36,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:36,634 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 18:09:36,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:36,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946008119] [2024-11-10 18:09:36,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946008119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:36,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:36,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:09:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907767461] [2024-11-10 18:09:36,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:36,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:36,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 219 [2024-11-10 18:09:36,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 175 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 18:09:36,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:36,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 219 [2024-11-10 18:09:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:37,026 INFO L124 PetriNetUnfolderBase]: 993/3607 cut-off events. [2024-11-10 18:09:37,026 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 18:09:37,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 3607 events. 993/3607 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 33121 event pairs, 840 based on Foata normal form. 0/3136 useless extension candidates. Maximal degree in co-relation 5485. Up to 1875 conditions per place. [2024-11-10 18:09:37,044 INFO L140 encePairwiseOnDemand]: 216/219 looper letters, 69 selfloop transitions, 2 changer transitions 0/176 dead transitions. [2024-11-10 18:09:37,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 176 transitions, 501 flow [2024-11-10 18:09:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2024-11-10 18:09:37,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-11-10 18:09:37,052 INFO L175 Difference]: Start difference. First operand has 172 places, 175 transitions, 357 flow. Second operand 3 states and 387 transitions. [2024-11-10 18:09:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 176 transitions, 501 flow [2024-11-10 18:09:37,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 176 transitions, 501 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:37,058 INFO L231 Difference]: Finished difference. Result has 175 places, 176 transitions, 369 flow [2024-11-10 18:09:37,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=175, PETRI_TRANSITIONS=176} [2024-11-10 18:09:37,059 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, 1 predicate places. [2024-11-10 18:09:37,059 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 176 transitions, 369 flow [2024-11-10 18:09:37,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 18:09:37,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:37,061 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:37,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:09:37,061 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:37,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1613960784, now seen corresponding path program 1 times [2024-11-10 18:09:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:37,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587014475] [2024-11-10 18:09:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:37,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587014475] [2024-11-10 18:09:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587014475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561245786] [2024-11-10 18:09:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:37,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:37,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:37,128 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 18:09:37,129 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 18:09:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:37,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:09:37,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:37,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561245786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:37,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 18:09:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593673164] [2024-11-10 18:09:37,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:37,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:09:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:37,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:09:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:09:37,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 219 [2024-11-10 18:09:37,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 176 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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 18:09:37,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:37,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 219 [2024-11-10 18:09:37,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:37,658 INFO L124 PetriNetUnfolderBase]: 993/3613 cut-off events. [2024-11-10 18:09:37,659 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-10 18:09:37,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 3613 events. 993/3613 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 33155 event pairs, 840 based on Foata normal form. 0/3142 useless extension candidates. Maximal degree in co-relation 5502. Up to 1875 conditions per place. [2024-11-10 18:09:37,677 INFO L140 encePairwiseOnDemand]: 216/219 looper letters, 69 selfloop transitions, 5 changer transitions 0/179 dead transitions. [2024-11-10 18:09:37,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 179 transitions, 529 flow [2024-11-10 18:09:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:09:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:09:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2024-11-10 18:09:37,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380517503805176 [2024-11-10 18:09:37,681 INFO L175 Difference]: Start difference. First operand has 175 places, 176 transitions, 369 flow. Second operand 6 states and 707 transitions. [2024-11-10 18:09:37,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 179 transitions, 529 flow [2024-11-10 18:09:37,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 179 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:09:37,687 INFO L231 Difference]: Finished difference. Result has 182 places, 179 transitions, 403 flow [2024-11-10 18:09:37,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2024-11-10 18:09:37,688 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, 8 predicate places. [2024-11-10 18:09:37,688 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 403 flow [2024-11-10 18:09:37,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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 18:09:37,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:37,689 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:37,704 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 18:09:37,889 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 18:09:37,893 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:37,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1036651664, now seen corresponding path program 2 times [2024-11-10 18:09:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668896239] [2024-11-10 18:09:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:37,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 18:09:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668896239] [2024-11-10 18:09:38,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668896239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:38,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:09:38,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155076612] [2024-11-10 18:09:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:38,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:38,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:38,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 219 [2024-11-10 18:09:38,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 18:09:38,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:38,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 219 [2024-11-10 18:09:38,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:38,491 INFO L124 PetriNetUnfolderBase]: 1046/3693 cut-off events. [2024-11-10 18:09:38,491 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-10 18:09:38,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5699 conditions, 3693 events. 1046/3693 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 33810 event pairs, 840 based on Foata normal form. 0/3264 useless extension candidates. Maximal degree in co-relation 5690. Up to 1870 conditions per place. [2024-11-10 18:09:38,512 INFO L140 encePairwiseOnDemand]: 215/219 looper letters, 95 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2024-11-10 18:09:38,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 637 flow [2024-11-10 18:09:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2024-11-10 18:09:38,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6103500761035008 [2024-11-10 18:09:38,515 INFO L175 Difference]: Start difference. First operand has 182 places, 179 transitions, 403 flow. Second operand 3 states and 401 transitions. [2024-11-10 18:09:38,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 637 flow [2024-11-10 18:09:38,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 629 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 18:09:38,520 INFO L231 Difference]: Finished difference. Result has 181 places, 177 transitions, 395 flow [2024-11-10 18:09:38,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=181, PETRI_TRANSITIONS=177} [2024-11-10 18:09:38,521 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, 7 predicate places. [2024-11-10 18:09:38,521 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 177 transitions, 395 flow [2024-11-10 18:09:38,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 18:09:38,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:38,522 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:38,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:09:38,522 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:38,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1036651665, now seen corresponding path program 1 times [2024-11-10 18:09:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709129775] [2024-11-10 18:09:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 18:09:38,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709129775] [2024-11-10 18:09:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709129775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:38,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:09:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516135277] [2024-11-10 18:09:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:38,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:38,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 219 [2024-11-10 18:09:38,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 177 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 18:09:38,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:38,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 219 [2024-11-10 18:09:38,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:39,026 INFO L124 PetriNetUnfolderBase]: 1035/3652 cut-off events. [2024-11-10 18:09:39,026 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-10 18:09:39,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5636 conditions, 3652 events. 1035/3652 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 33253 event pairs, 820 based on Foata normal form. 1/3201 useless extension candidates. Maximal degree in co-relation 5626. Up to 1901 conditions per place. [2024-11-10 18:09:39,050 INFO L140 encePairwiseOnDemand]: 215/219 looper letters, 96 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2024-11-10 18:09:39,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 200 transitions, 637 flow [2024-11-10 18:09:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2024-11-10 18:09:39,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6210045662100456 [2024-11-10 18:09:39,054 INFO L175 Difference]: Start difference. First operand has 181 places, 177 transitions, 395 flow. Second operand 3 states and 408 transitions. [2024-11-10 18:09:39,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 200 transitions, 637 flow [2024-11-10 18:09:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 200 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:09:39,062 INFO L231 Difference]: Finished difference. Result has 182 places, 177 transitions, 401 flow [2024-11-10 18:09:39,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=182, PETRI_TRANSITIONS=177} [2024-11-10 18:09:39,063 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, 8 predicate places. [2024-11-10 18:09:39,064 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 177 transitions, 401 flow [2024-11-10 18:09:39,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 18:09:39,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:39,065 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:39,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:09:39,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:39,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1933987355, now seen corresponding path program 1 times [2024-11-10 18:09:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539023101] [2024-11-10 18:09:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:09:39,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539023101] [2024-11-10 18:09:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539023101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216792768] [2024-11-10 18:09:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:39,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:39,189 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 18:09:39,191 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 18:09:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:39,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:09:39,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:09:39,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:09:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216792768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:39,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:39,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 18:09:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689873543] [2024-11-10 18:09:39,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:39,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 18:09:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 18:09:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:09:39,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 219 [2024-11-10 18:09:39,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 177 transitions, 401 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 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 18:09:39,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:39,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 219 [2024-11-10 18:09:39,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:39,773 INFO L124 PetriNetUnfolderBase]: 989/3542 cut-off events. [2024-11-10 18:09:39,774 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-11-10 18:09:39,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 3542 events. 989/3542 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 32221 event pairs, 840 based on Foata normal form. 6/3119 useless extension candidates. Maximal degree in co-relation 5470. Up to 1836 conditions per place. [2024-11-10 18:09:39,798 INFO L140 encePairwiseOnDemand]: 216/219 looper letters, 69 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-11-10 18:09:39,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 183 transitions, 597 flow [2024-11-10 18:09:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:09:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:09:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1346 transitions. [2024-11-10 18:09:39,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5121765601217656 [2024-11-10 18:09:39,802 INFO L175 Difference]: Start difference. First operand has 182 places, 177 transitions, 401 flow. Second operand 12 states and 1346 transitions. [2024-11-10 18:09:39,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 183 transitions, 597 flow [2024-11-10 18:09:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 183 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:09:39,808 INFO L231 Difference]: Finished difference. Result has 197 places, 183 transitions, 481 flow [2024-11-10 18:09:39,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=481, PETRI_PLACES=197, PETRI_TRANSITIONS=183} [2024-11-10 18:09:39,810 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, 23 predicate places. [2024-11-10 18:09:39,811 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 183 transitions, 481 flow [2024-11-10 18:09:39,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 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 18:09:39,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:39,812 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:39,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:09:40,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 18:09:40,017 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:40,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1407293531, now seen corresponding path program 2 times [2024-11-10 18:09:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:40,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496545980] [2024-11-10 18:09:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:40,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:09:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496545980] [2024-11-10 18:09:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496545980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412355234] [2024-11-10 18:09:40,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:09:40,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:40,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:40,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:09:40,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:09:40,286 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:09:40,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:09:40,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:09:40,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:40,323 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 18:09:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-10 18:09:40,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:09:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412355234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:40,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:09:40,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-10 18:09:40,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137585356] [2024-11-10 18:09:40,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:40,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:09:40,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:40,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:09:40,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:09:40,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 219 [2024-11-10 18:09:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 183 transitions, 481 flow. Second operand has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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 18:09:40,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:40,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 219 [2024-11-10 18:09:40,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:40,909 INFO L124 PetriNetUnfolderBase]: 973/3475 cut-off events. [2024-11-10 18:09:40,910 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-11-10 18:09:40,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 3475 events. 973/3475 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 31855 event pairs, 17 based on Foata normal form. 22/3128 useless extension candidates. Maximal degree in co-relation 5440. Up to 1711 conditions per place. [2024-11-10 18:09:40,928 INFO L140 encePairwiseOnDemand]: 214/219 looper letters, 143 selfloop transitions, 4 changer transitions 0/249 dead transitions. [2024-11-10 18:09:40,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 249 transitions, 905 flow [2024-11-10 18:09:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:09:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:09:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2024-11-10 18:09:40,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6009132420091324 [2024-11-10 18:09:40,931 INFO L175 Difference]: Start difference. First operand has 197 places, 183 transitions, 481 flow. Second operand 5 states and 658 transitions. [2024-11-10 18:09:40,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 249 transitions, 905 flow [2024-11-10 18:09:40,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 249 transitions, 869 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-10 18:09:40,938 INFO L231 Difference]: Finished difference. Result has 196 places, 183 transitions, 456 flow [2024-11-10 18:09:40,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=196, PETRI_TRANSITIONS=183} [2024-11-10 18:09:40,939 INFO L277 CegarLoopForPetriNet]: 174 programPoint places, 22 predicate places. [2024-11-10 18:09:40,939 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 183 transitions, 456 flow [2024-11-10 18:09:40,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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 18:09:40,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:40,940 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:40,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:09:41,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:41,141 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-10 18:09:41,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:41,142 INFO L85 PathProgramCache]: Analyzing trace with hash 676427367, now seen corresponding path program 1 times [2024-11-10 18:09:41,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:41,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142180816] [2024-11-10 18:09:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:41,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:41,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:09:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:41,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:09:41,227 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:09:41,229 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-11-10 18:09:41,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-10 18:09:41,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-10 18:09:41,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-10 18:09:41,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-10 18:09:41,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (44 of 50 remaining) [2024-11-10 18:09:41,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-10 18:09:41,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-10 18:09:41,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-10 18:09:41,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-10 18:09:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (31 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-11-10 18:09:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-11-10 18:09:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-10 18:09:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-10 18:09:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-10 18:09:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-10 18:09:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-10 18:09:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-10 18:09:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-10 18:09:41,240 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-10 18:09:41,240 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-10 18:09:41,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-10 18:09:41,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-11-10 18:09:41,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:09:41,244 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-10 18:09:41,246 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:09:41,248 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:09:41,293 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:09:41,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 288 transitions, 592 flow [2024-11-10 18:09:41,336 INFO L124 PetriNetUnfolderBase]: 126/585 cut-off events. [2024-11-10 18:09:41,336 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:09:41,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 585 events. 126/585 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3716 event pairs, 0 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 362. Up to 12 conditions per place. [2024-11-10 18:09:41,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 288 transitions, 592 flow [2024-11-10 18:09:41,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 288 transitions, 592 flow [2024-11-10 18:09:41,350 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:41,351 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;@596689a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:41,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-10 18:09:41,354 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:41,354 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2024-11-10 18:09:41,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:41,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:41,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:09:41,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-10 18:09:41,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash -283971316, now seen corresponding path program 1 times [2024-11-10 18:09:41,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821819262] [2024-11-10 18:09:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:41,369 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 18:09:41,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:41,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821819262] [2024-11-10 18:09:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821819262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:41,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:41,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:09:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553840603] [2024-11-10 18:09:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:41,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:09:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:09:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:09:41,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 288 [2024-11-10 18:09:41,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 288 transitions, 592 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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 18:09:41,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:41,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 288 [2024-11-10 18:09:41,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:48,980 INFO L124 PetriNetUnfolderBase]: 43636/100968 cut-off events. [2024-11-10 18:09:48,980 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-10 18:09:49,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164086 conditions, 100968 events. 43636/100968 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 2843. Compared 1269550 event pairs, 38368 based on Foata normal form. 35149/124808 useless extension candidates. Maximal degree in co-relation 158287. Up to 62976 conditions per place. [2024-11-10 18:09:49,860 INFO L140 encePairwiseOnDemand]: 234/288 looper letters, 93 selfloop transitions, 0 changer transitions 0/230 dead transitions. [2024-11-10 18:09:49,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 230 transitions, 662 flow [2024-11-10 18:09:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:09:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:09:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 421 transitions. [2024-11-10 18:09:49,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7309027777777778 [2024-11-10 18:09:49,863 INFO L175 Difference]: Start difference. First operand has 229 places, 288 transitions, 592 flow. Second operand 2 states and 421 transitions. [2024-11-10 18:09:49,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 230 transitions, 662 flow [2024-11-10 18:09:49,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 230 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:49,866 INFO L231 Difference]: Finished difference. Result has 226 places, 230 transitions, 476 flow [2024-11-10 18:09:49,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=476, PETRI_PLACES=226, PETRI_TRANSITIONS=230} [2024-11-10 18:09:49,868 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, -3 predicate places. [2024-11-10 18:09:49,868 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 230 transitions, 476 flow [2024-11-10 18:09:49,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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 18:09:49,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:49,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:49,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:09:49,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-10 18:09:49,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -166911184, now seen corresponding path program 1 times [2024-11-10 18:09:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826198576] [2024-11-10 18:09:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:49,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:49,899 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 18:09:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826198576] [2024-11-10 18:09:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826198576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:09:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642119753] [2024-11-10 18:09:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:49,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:49,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2024-11-10 18:09:49,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 230 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 18:09:49,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:49,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2024-11-10 18:09:49,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:57,476 INFO L124 PetriNetUnfolderBase]: 43636/100970 cut-off events. [2024-11-10 18:09:57,476 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-10 18:09:57,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164091 conditions, 100970 events. 43636/100970 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 2843. Compared 1269106 event pairs, 38368 based on Foata normal form. 0/89660 useless extension candidates. Maximal degree in co-relation 164086. Up to 62977 conditions per place. [2024-11-10 18:09:58,171 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 93 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2024-11-10 18:09:58,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 231 transitions, 668 flow [2024-11-10 18:09:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2024-11-10 18:09:58,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 18:09:58,173 INFO L175 Difference]: Start difference. First operand has 226 places, 230 transitions, 476 flow. Second operand 3 states and 504 transitions. [2024-11-10 18:09:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 231 transitions, 668 flow [2024-11-10 18:09:58,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 668 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:58,177 INFO L231 Difference]: Finished difference. Result has 229 places, 231 transitions, 488 flow [2024-11-10 18:09:58,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2024-11-10 18:09:58,178 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2024-11-10 18:09:58,178 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 488 flow [2024-11-10 18:09:58,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 18:09:58,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:58,179 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:09:58,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 18:09:58,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-10 18:09:58,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -923510064, now seen corresponding path program 1 times [2024-11-10 18:09:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:58,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460987412] [2024-11-10 18:09:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460987412] [2024-11-10 18:09:58,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460987412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:58,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515035134] [2024-11-10 18:09:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:58,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:58,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:58,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:09:58,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:09:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:58,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:09:58,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:58,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:58,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515035134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:58,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:58,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 18:09:58,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257331939] [2024-11-10 18:09:58,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:58,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:09:58,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:09:58,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:09:58,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 288 [2024-11-10 18:09:58,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 488 flow. Second operand has 7 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 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 18:09:58,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:58,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 288 [2024-11-10 18:09:58,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:06,119 INFO L124 PetriNetUnfolderBase]: 43636/100976 cut-off events. [2024-11-10 18:10:06,119 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-10 18:10:06,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164110 conditions, 100976 events. 43636/100976 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 2843. Compared 1269379 event pairs, 38368 based on Foata normal form. 0/89666 useless extension candidates. Maximal degree in co-relation 164103. Up to 62977 conditions per place. [2024-11-10 18:10:06,750 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 93 selfloop transitions, 5 changer transitions 0/234 dead transitions. [2024-11-10 18:10:06,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 234 transitions, 696 flow [2024-11-10 18:10:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:10:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:10:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 917 transitions. [2024-11-10 18:10:06,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306712962962963 [2024-11-10 18:10:06,753 INFO L175 Difference]: Start difference. First operand has 229 places, 231 transitions, 488 flow. Second operand 6 states and 917 transitions. [2024-11-10 18:10:06,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 234 transitions, 696 flow [2024-11-10 18:10:06,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 234 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:10:06,758 INFO L231 Difference]: Finished difference. Result has 236 places, 234 transitions, 522 flow [2024-11-10 18:10:06,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=236, PETRI_TRANSITIONS=234} [2024-11-10 18:10:06,759 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, 7 predicate places. [2024-11-10 18:10:06,759 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 234 transitions, 522 flow [2024-11-10 18:10:06,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 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 18:10:06,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:06,760 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:06,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 18:10:06,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:10:06,962 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-10 18:10:06,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:06,963 INFO L85 PathProgramCache]: Analyzing trace with hash -428502608, now seen corresponding path program 2 times [2024-11-10 18:10:06,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:06,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944955816] [2024-11-10 18:10:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 18:10:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944955816] [2024-11-10 18:10:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944955816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:07,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:07,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850662519] [2024-11-10 18:10:07,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:07,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:07,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2024-11-10 18:10:07,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 234 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 18:10:07,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:07,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2024-11-10 18:10:07,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand