./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:28:43,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:28:43,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:28:43,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:28:43,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:28:43,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:28:43,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:28:43,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:28:43,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:28:43,960 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:28:43,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:28:43,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:28:43,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:28:43,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:28:43,963 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:28:43,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:28:43,970 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:28:43,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:28:43,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:28:43,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:28:43,971 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:28:43,971 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:28:43,975 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:28:43,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:28:43,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:28:43,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:28:43,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:28:43,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:28:43,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:28:43,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:28:43,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:28:43,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:28:43,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:28:43,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:28:43,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:28:43,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:28:43,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:28:43,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:28:43,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:28:43,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:28:43,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:28:43,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:28:43,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-11-17 03:28:44,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:28:44,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:28:44,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:28:44,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:28:44,256 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:28:44,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-17 03:28:45,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:28:46,063 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:28:46,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-17 03:28:46,082 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c178e25/5e841f2816c843659ede4676bcb12418/FLAG6930d0f9d [2024-11-17 03:28:46,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c178e25/5e841f2816c843659ede4676bcb12418 [2024-11-17 03:28:46,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:28:46,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:28:46,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:28:46,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:28:46,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:28:46,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285ae6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46, skipping insertion in model container [2024-11-17 03:28:46,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:28:46,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:28:46,567 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:28:46,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:28:46,672 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:28:46,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46 WrapperNode [2024-11-17 03:28:46,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:28:46,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:28:46,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:28:46,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:28:46,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,743 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 150 [2024-11-17 03:28:46,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:28:46,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:28:46,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:28:46,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:28:46,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,790 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-17 03:28:46,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,802 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:28:46,814 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:28:46,814 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:28:46,814 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:28:46,815 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (1/1) ... [2024-11-17 03:28:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:28:46,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:28:46,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:28:46,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:28:46,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:28:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:28:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:28:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:28:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 03:28:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:28:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:28:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:28:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:28:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 03:28:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:28:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:28:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:28:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:28:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:28:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:28:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-17 03:28:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:28:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:28:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:28:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:28:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 03:28:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:28:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:28:46,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:28:46,926 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:28:47,075 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:28:47,077 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:28:47,340 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 03:28:47,340 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 03:28:47,411 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:28:47,411 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:28:47,629 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:28:47,631 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:28:47,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:28:47 BoogieIcfgContainer [2024-11-17 03:28:47,635 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:28:47,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:28:47,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:28:47,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:28:47,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:28:46" (1/3) ... [2024-11-17 03:28:47,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455e4bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:28:47, skipping insertion in model container [2024-11-17 03:28:47,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:28:46" (2/3) ... [2024-11-17 03:28:47,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455e4bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:28:47, skipping insertion in model container [2024-11-17 03:28:47,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:28:47" (3/3) ... [2024-11-17 03:28:47,646 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-11-17 03:28:47,667 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:28:47,667 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-11-17 03:28:47,667 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:28:47,720 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:28:47,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 152 transitions, 311 flow [2024-11-17 03:28:47,856 INFO L124 PetriNetUnfolderBase]: 53/249 cut-off events. [2024-11-17 03:28:47,859 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:28:47,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 249 events. 53/249 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1182 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2024-11-17 03:28:47,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 152 transitions, 311 flow [2024-11-17 03:28:47,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 152 transitions, 311 flow [2024-11-17 03:28:47,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:28:47,895 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;@dc5a130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:28:47,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-17 03:28:47,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:28:47,905 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:28:47,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:28:47,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:47,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:47,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:28:47,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash 18230245, now seen corresponding path program 1 times [2024-11-17 03:28:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458537199] [2024-11-17 03:28:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:47,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:48,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:48,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458537199] [2024-11-17 03:28:48,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458537199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:48,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55551177] [2024-11-17 03:28:48,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:48,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:48,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:48,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 152 [2024-11-17 03:28:48,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 152 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:48,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:48,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 152 [2024-11-17 03:28:48,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:48,792 INFO L124 PetriNetUnfolderBase]: 615/2026 cut-off events. [2024-11-17 03:28:48,793 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:28:48,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 2026 events. 615/2026 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13468 event pairs, 561 based on Foata normal form. 787/2746 useless extension candidates. Maximal degree in co-relation 3204. Up to 1223 conditions per place. [2024-11-17 03:28:48,814 INFO L140 encePairwiseOnDemand]: 117/152 looper letters, 70 selfloop transitions, 2 changer transitions 1/132 dead transitions. [2024-11-17 03:28:48,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 132 transitions, 417 flow [2024-11-17 03:28:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2024-11-17 03:28:48,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6469298245614035 [2024-11-17 03:28:48,835 INFO L175 Difference]: Start difference. First operand has 122 places, 152 transitions, 311 flow. Second operand 3 states and 295 transitions. [2024-11-17 03:28:48,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 132 transitions, 417 flow [2024-11-17 03:28:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 132 transitions, 417 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:28:48,848 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 239 flow [2024-11-17 03:28:48,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-11-17 03:28:48,857 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -4 predicate places. [2024-11-17 03:28:48,858 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 239 flow [2024-11-17 03:28:48,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:48,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:48,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:48,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:28:48,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:28:48,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:48,861 INFO L85 PathProgramCache]: Analyzing trace with hash 18230246, now seen corresponding path program 1 times [2024-11-17 03:28:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480377595] [2024-11-17 03:28:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:48,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:49,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480377595] [2024-11-17 03:28:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480377595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:49,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:49,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:49,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037484424] [2024-11-17 03:28:49,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:49,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:49,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2024-11-17 03:28:49,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:49,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:49,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2024-11-17 03:28:49,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:49,423 INFO L124 PetriNetUnfolderBase]: 613/1960 cut-off events. [2024-11-17 03:28:49,423 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-17 03:28:49,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 1960 events. 613/1960 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13184 event pairs, 0 based on Foata normal form. 1/1875 useless extension candidates. Maximal degree in co-relation 3188. Up to 1229 conditions per place. [2024-11-17 03:28:49,438 INFO L140 encePairwiseOnDemand]: 148/152 looper letters, 72 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2024-11-17 03:28:49,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 132 transitions, 423 flow [2024-11-17 03:28:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2024-11-17 03:28:49,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-11-17 03:28:49,503 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 239 flow. Second operand 3 states and 256 transitions. [2024-11-17 03:28:49,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 132 transitions, 423 flow [2024-11-17 03:28:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 132 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:28:49,512 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 245 flow [2024-11-17 03:28:49,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-11-17 03:28:49,513 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -4 predicate places. [2024-11-17 03:28:49,514 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 245 flow [2024-11-17 03:28:49,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:49,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:49,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 03:28:49,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:28:49,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:28:49,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1173279931, now seen corresponding path program 1 times [2024-11-17 03:28:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:49,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043729767] [2024-11-17 03:28:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:49,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043729767] [2024-11-17 03:28:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043729767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:28:49,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892788532] [2024-11-17 03:28:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:49,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:28:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:28:49,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:28:49,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:28:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:49,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:28:49,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:28:49,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 03:28:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:49,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:28:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:50,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892788532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:28:50,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:28:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-17 03:28:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832988697] [2024-11-17 03:28:50,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:28:50,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 03:28:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 03:28:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:28:50,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 152 [2024-11-17 03:28:50,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 245 flow. Second operand has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:50,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:50,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 152 [2024-11-17 03:28:50,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:50,245 INFO L124 PetriNetUnfolderBase]: 51/200 cut-off events. [2024-11-17 03:28:50,246 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-17 03:28:50,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 200 events. 51/200 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 522 event pairs, 32 based on Foata normal form. 36/235 useless extension candidates. Maximal degree in co-relation 350. Up to 105 conditions per place. [2024-11-17 03:28:50,247 INFO L140 encePairwiseOnDemand]: 148/152 looper letters, 39 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-17 03:28:50,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 218 flow [2024-11-17 03:28:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:28:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:28:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-11-17 03:28:50,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4588815789473684 [2024-11-17 03:28:50,250 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 245 flow. Second operand 4 states and 279 transitions. [2024-11-17 03:28:50,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 218 flow [2024-11-17 03:28:50,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:28:50,252 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 96 flow [2024-11-17 03:28:50,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-17 03:28:50,253 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -72 predicate places. [2024-11-17 03:28:50,253 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 96 flow [2024-11-17 03:28:50,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:50,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:50,255 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-17 03:28:50,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:28:50,455 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 [2024-11-17 03:28:50,456 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:28:50,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2011940065, now seen corresponding path program 1 times [2024-11-17 03:28:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779481757] [2024-11-17 03:28:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:50,483 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:28:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:28:50,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:28:50,528 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:28:50,529 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-17 03:28:50,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-11-17 03:28:50,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-11-17 03:28:50,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-11-17 03:28:50,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-11-17 03:28:50,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-11-17 03:28:50,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2024-11-17 03:28:50,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-11-17 03:28:50,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2024-11-17 03:28:50,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-17 03:28:50,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:28:50,533 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:28:50,536 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:28:50,536 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:28:50,564 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:28:50,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 203 transitions, 422 flow [2024-11-17 03:28:50,604 INFO L124 PetriNetUnfolderBase]: 88/412 cut-off events. [2024-11-17 03:28:50,604 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 03:28:50,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 412 events. 88/412 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2202 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 253. Up to 9 conditions per place. [2024-11-17 03:28:50,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 203 transitions, 422 flow [2024-11-17 03:28:50,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 203 transitions, 422 flow [2024-11-17 03:28:50,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:28:50,617 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;@dc5a130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:28:50,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-17 03:28:50,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:28:50,619 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:28:50,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:28:50,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:50,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:50,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:28:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash 24479397, now seen corresponding path program 1 times [2024-11-17 03:28:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298448986] [2024-11-17 03:28:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:50,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298448986] [2024-11-17 03:28:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298448986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:50,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787754727] [2024-11-17 03:28:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:50,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:50,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:50,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2024-11-17 03:28:50,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 203 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:50,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:50,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2024-11-17 03:28:50,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:28:56,348 INFO L124 PetriNetUnfolderBase]: 22786/47822 cut-off events. [2024-11-17 03:28:56,349 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-17 03:28:56,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83149 conditions, 47822 events. 22786/47822 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 473232 event pairs, 21131 based on Foata normal form. 22194/68390 useless extension candidates. Maximal degree in co-relation 70580. Up to 33215 conditions per place. [2024-11-17 03:28:56,619 INFO L140 encePairwiseOnDemand]: 156/203 looper letters, 106 selfloop transitions, 2 changer transitions 1/188 dead transitions. [2024-11-17 03:28:56,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 188 transitions, 610 flow [2024-11-17 03:28:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:28:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:28:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2024-11-17 03:28:56,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6814449917898193 [2024-11-17 03:28:56,622 INFO L175 Difference]: Start difference. First operand has 162 places, 203 transitions, 422 flow. Second operand 3 states and 415 transitions. [2024-11-17 03:28:56,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 188 transitions, 610 flow [2024-11-17 03:28:56,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 188 transitions, 610 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:28:56,628 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 326 flow [2024-11-17 03:28:56,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-11-17 03:28:56,629 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -4 predicate places. [2024-11-17 03:28:56,629 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 326 flow [2024-11-17 03:28:56,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:56,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:28:56,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:28:56,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:28:56,630 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:28:56,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:28:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash 24479398, now seen corresponding path program 1 times [2024-11-17 03:28:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:28:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170450009] [2024-11-17 03:28:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:28:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:28:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:28:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:28:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:28:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170450009] [2024-11-17 03:28:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170450009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:28:56,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:28:56,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:28:56,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327534553] [2024-11-17 03:28:56,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:28:56,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:28:56,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:28:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:28:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:28:56,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2024-11-17 03:28:56,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:28:56,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:28:56,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2024-11-17 03:28:56,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:00,889 INFO L124 PetriNetUnfolderBase]: 22750/49189 cut-off events. [2024-11-17 03:29:00,889 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-17 03:29:00,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84699 conditions, 49189 events. 22750/49189 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 502401 event pairs, 10761 based on Foata normal form. 1/47304 useless extension candidates. Maximal degree in co-relation 81955. Up to 35030 conditions per place. [2024-11-17 03:29:01,164 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 92 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2024-11-17 03:29:01,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 172 transitions, 552 flow [2024-11-17 03:29:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:29:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:29:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2024-11-17 03:29:01,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-17 03:29:01,167 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 326 flow. Second operand 3 states and 336 transitions. [2024-11-17 03:29:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 172 transitions, 552 flow [2024-11-17 03:29:01,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 172 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:29:01,217 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 336 flow [2024-11-17 03:29:01,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2024-11-17 03:29:01,220 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -4 predicate places. [2024-11-17 03:29:01,220 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 336 flow [2024-11-17 03:29:01,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:29:01,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:01,221 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 03:29:01,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:29:01,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:29:01,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1829195849, now seen corresponding path program 1 times [2024-11-17 03:29:01,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896109555] [2024-11-17 03:29:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896109555] [2024-11-17 03:29:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896109555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:29:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229088957] [2024-11-17 03:29:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:01,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:01,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:29:01,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:29:01,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:29:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:01,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:29:01,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:29:01,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 03:29:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:01,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:29:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:01,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229088957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:29:01,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:29:01,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-17 03:29:01,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088728635] [2024-11-17 03:29:01,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:29:01,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 03:29:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 03:29:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:29:01,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2024-11-17 03:29:01,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 336 flow. Second operand has 9 states, 9 states have (on average 81.33333333333333) internal successors, (732), 9 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:29:01,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:01,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2024-11-17 03:29:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:02,334 INFO L124 PetriNetUnfolderBase]: 2193/4614 cut-off events. [2024-11-17 03:29:02,335 INFO L125 PetriNetUnfolderBase]: For 1069/1069 co-relation queries the response was YES. [2024-11-17 03:29:02,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 4614 events. 2193/4614 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 33097 event pairs, 340 based on Foata normal form. 684/5151 useless extension candidates. Maximal degree in co-relation 8458. Up to 2808 conditions per place. [2024-11-17 03:29:02,362 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 93 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-11-17 03:29:02,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 486 flow [2024-11-17 03:29:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:29:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:29:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 495 transitions. [2024-11-17 03:29:02,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2024-11-17 03:29:02,365 INFO L175 Difference]: Start difference. First operand has 158 places, 154 transitions, 336 flow. Second operand 5 states and 495 transitions. [2024-11-17 03:29:02,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 486 flow [2024-11-17 03:29:02,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 138 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:29:02,371 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 188 flow [2024-11-17 03:29:02,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-11-17 03:29:02,373 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -69 predicate places. [2024-11-17 03:29:02,373 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 188 flow [2024-11-17 03:29:02,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.33333333333333) internal successors, (732), 9 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:29:02,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:02,374 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:29:02,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:29:02,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-17 03:29:02,575 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:29:02,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1406958417, now seen corresponding path program 1 times [2024-11-17 03:29:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:02,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582803317] [2024-11-17 03:29:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:02,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:29:02,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:29:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:29:02,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:29:02,622 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:29:02,622 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-17 03:29:02,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-11-17 03:29:02,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-11-17 03:29:02,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-11-17 03:29:02,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-11-17 03:29:02,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-11-17 03:29:02,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2024-11-17 03:29:02,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-11-17 03:29:02,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2024-11-17 03:29:02,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-17 03:29:02,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:29:02,625 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:29:02,627 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:29:02,627 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:29:02,659 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 03:29:02,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 254 transitions, 535 flow [2024-11-17 03:29:02,715 INFO L124 PetriNetUnfolderBase]: 128/602 cut-off events. [2024-11-17 03:29:02,715 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:29:02,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 602 events. 128/602 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3373 event pairs, 1 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 423. Up to 16 conditions per place. [2024-11-17 03:29:02,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 254 transitions, 535 flow [2024-11-17 03:29:02,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 254 transitions, 535 flow [2024-11-17 03:29:02,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:29:02,730 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;@dc5a130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:29:02,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-17 03:29:02,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:29:02,732 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:29:02,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:29:02,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:02,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:29:02,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-11-17 03:29:02,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash 32298533, now seen corresponding path program 1 times [2024-11-17 03:29:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:02,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45982693] [2024-11-17 03:29:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:02,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45982693] [2024-11-17 03:29:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45982693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:02,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:29:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656686402] [2024-11-17 03:29:02,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:02,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:29:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:29:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:29:02,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 254 [2024-11-17 03:29:02,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 254 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:29:02,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:02,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 254 [2024-11-17 03:29:02,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand