./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:20:39,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:20:39,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:20:40,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:20:40,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:20:40,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:20:40,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:20:40,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:20:40,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:20:40,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:20:40,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:20:40,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:20:40,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:20:40,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:20:40,040 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:20:40,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:20:40,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:20:40,041 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:20:40,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:20:40,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:20:40,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:20:40,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:20:40,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:20:40,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:20:40,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:20:40,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:20:40,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:20:40,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:20:40,048 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:20:40,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:20:40,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:20:40,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:20:40,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:20:40,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:20:40,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:20:40,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:20:40,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:20:40,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:20:40,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:20:40,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:20:40,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:20:40,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:20:40,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-11-16 19:20:40,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:20:40,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:20:40,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:20:40,348 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:20:40,348 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:20:40,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-16 19:20:41,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:20:42,073 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:20:42,074 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-16 19:20:42,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8e579a9/d155d6abed914be48d308c94bf487b29/FLAG55a360cb8 [2024-11-16 19:20:42,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8e579a9/d155d6abed914be48d308c94bf487b29 [2024-11-16 19:20:42,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:20:42,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:20:42,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:20:42,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:20:42,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:20:42,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531181bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42, skipping insertion in model container [2024-11-16 19:20:42,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,172 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:20:42,519 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2024-11-16 19:20:42,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:20:42,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:20:42,603 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2024-11-16 19:20:42,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:20:42,644 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:20:42,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42 WrapperNode [2024-11-16 19:20:42,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:20:42,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:20:42,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:20:42,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:20:42,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,693 INFO L138 Inliner]: procedures = 171, calls = 40, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-16 19:20:42,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:20:42,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:20:42,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:20:42,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:20:42,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,730 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-11-16 19:20:42,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,742 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:20:42,750 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:20:42,750 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:20:42,751 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:20:42,752 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (1/1) ... [2024-11-16 19:20:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:20:42,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:20:42,802 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) [2024-11-16 19:20:42,807 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 [2024-11-16 19:20:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:20:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:20:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:20:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:20:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-16 19:20:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:20:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-16 19:20:42,884 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 19:20:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:20:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:20:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:20:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:20:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 19:20:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:20:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:20:42,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:20:42,890 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:20:43,108 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:20:43,111 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:20:43,273 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L709: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-16 19:20:43,273 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L709-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-16 19:20:43,322 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:20:43,322 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:20:43,470 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:20:43,471 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:20:43,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:20:43 BoogieIcfgContainer [2024-11-16 19:20:43,471 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:20:43,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:20:43,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:20:43,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:20:43,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:20:42" (1/3) ... [2024-11-16 19:20:43,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a310434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:20:43, skipping insertion in model container [2024-11-16 19:20:43,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:20:42" (2/3) ... [2024-11-16 19:20:43,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a310434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:20:43, skipping insertion in model container [2024-11-16 19:20:43,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:20:43" (3/3) ... [2024-11-16 19:20:43,480 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-11-16 19:20:43,496 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:20:43,496 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:20:43,496 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:20:43,534 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-16 19:20:43,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 55 transitions, 117 flow [2024-11-16 19:20:43,615 INFO L124 PetriNetUnfolderBase]: 17/79 cut-off events. [2024-11-16 19:20:43,616 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:20:43,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 17/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 246 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2024-11-16 19:20:43,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 55 transitions, 117 flow [2024-11-16 19:20:43,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 53 transitions, 110 flow [2024-11-16 19:20:43,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:20:43,638 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=LoopHeads, 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;@1fd98e01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:20:43,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 19:20:43,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:20:43,645 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-16 19:20:43,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:20:43,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:43,646 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-16 19:20:43,646 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:43,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1847796682, now seen corresponding path program 1 times [2024-11-16 19:20:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:43,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655738164] [2024-11-16 19:20:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:20:43,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:20:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:20:43,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:20:43,876 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:20:43,878 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-16 19:20:43,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-16 19:20:43,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:20:43,882 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-16 19:20:43,889 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:20:43,890 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 19:20:43,917 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:20:43,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 82 transitions, 180 flow [2024-11-16 19:20:43,968 INFO L124 PetriNetUnfolderBase]: 31/140 cut-off events. [2024-11-16 19:20:43,968 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:20:43,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 140 events. 31/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 511 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 83. Up to 8 conditions per place. [2024-11-16 19:20:43,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 82 transitions, 180 flow [2024-11-16 19:20:43,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 82 transitions, 180 flow [2024-11-16 19:20:43,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:20:43,979 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=LoopHeads, 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;@1fd98e01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:20:43,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 19:20:43,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:20:43,991 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2024-11-16 19:20:43,991 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:20:43,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:43,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:20:43,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:43,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1851505627, now seen corresponding path program 1 times [2024-11-16 19:20:43,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:43,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709291048] [2024-11-16 19:20:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:43,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:20:44,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709291048] [2024-11-16 19:20:44,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709291048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:20:44,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:20:44,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:20:44,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415605869] [2024-11-16 19:20:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:20:44,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:20:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:20:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:20:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:20:44,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 82 [2024-11-16 19:20:44,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2024-11-16 19:20:44,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:20:44,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 82 [2024-11-16 19:20:44,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:20:44,795 INFO L124 PetriNetUnfolderBase]: 1861/4010 cut-off events. [2024-11-16 19:20:44,795 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-16 19:20:44,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7096 conditions, 4010 events. 1861/4010 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 30528 event pairs, 1842 based on Foata normal form. 1786/5658 useless extension candidates. Maximal degree in co-relation 5099. Up to 3029 conditions per place. [2024-11-16 19:20:44,823 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 26 selfloop transitions, 0 changer transitions 12/65 dead transitions. [2024-11-16 19:20:44,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 212 flow [2024-11-16 19:20:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:20:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:20:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 114 transitions. [2024-11-16 19:20:44,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2024-11-16 19:20:44,838 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 180 flow. Second operand 2 states and 114 transitions. [2024-11-16 19:20:44,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 212 flow [2024-11-16 19:20:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:20:44,846 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 116 flow [2024-11-16 19:20:44,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-11-16 19:20:44,853 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2024-11-16 19:20:44,853 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 116 flow [2024-11-16 19:20:44,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2024-11-16 19:20:44,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:44,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:20:44,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:20:44,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:44,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1529325106, now seen corresponding path program 1 times [2024-11-16 19:20:44,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:44,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904947579] [2024-11-16 19:20:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:20:44,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904947579] [2024-11-16 19:20:44,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904947579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:20:44,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:20:44,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:20:44,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690830951] [2024-11-16 19:20:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:20:44,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:20:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:20:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:20:44,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:20:44,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2024-11-16 19:20:44,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-16 19:20:44,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:20:44,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2024-11-16 19:20:44,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:20:45,304 INFO L124 PetriNetUnfolderBase]: 1413/3016 cut-off events. [2024-11-16 19:20:45,304 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-16 19:20:45,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5348 conditions, 3016 events. 1413/3016 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 21706 event pairs, 630 based on Foata normal form. 0/2870 useless extension candidates. Maximal degree in co-relation 5343. Up to 2284 conditions per place. [2024-11-16 19:20:45,322 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 37 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-16 19:20:45,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 216 flow [2024-11-16 19:20:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:20:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:20:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-16 19:20:45,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2024-11-16 19:20:45,367 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 116 flow. Second operand 3 states and 130 transitions. [2024-11-16 19:20:45,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 216 flow [2024-11-16 19:20:45,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:20:45,372 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 128 flow [2024-11-16 19:20:45,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-16 19:20:45,373 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-11-16 19:20:45,374 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 128 flow [2024-11-16 19:20:45,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-16 19:20:45,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:45,374 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-16 19:20:45,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:20:45,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:45,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:45,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1917963035, now seen corresponding path program 1 times [2024-11-16 19:20:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:45,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036362571] [2024-11-16 19:20:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:45,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:20:45,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:20:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:20:45,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:20:45,447 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:20:45,447 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-16 19:20:45,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-16 19:20:45,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:20:45,448 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-16 19:20:45,450 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:20:45,450 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 19:20:45,485 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:20:45,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 109 transitions, 245 flow [2024-11-16 19:20:45,512 INFO L124 PetriNetUnfolderBase]: 50/218 cut-off events. [2024-11-16 19:20:45,513 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-16 19:20:45,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 218 events. 50/218 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 878 event pairs, 1 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 151. Up to 16 conditions per place. [2024-11-16 19:20:45,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 109 transitions, 245 flow [2024-11-16 19:20:45,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 109 transitions, 245 flow [2024-11-16 19:20:45,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:20:45,519 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=LoopHeads, 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;@1fd98e01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:20:45,520 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 19:20:45,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:20:45,523 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2024-11-16 19:20:45,523 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:20:45,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:45,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:20:45,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:45,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 314509989, now seen corresponding path program 1 times [2024-11-16 19:20:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:45,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759596616] [2024-11-16 19:20:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:45,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:20:45,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759596616] [2024-11-16 19:20:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759596616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:20:45,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:20:45,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:20:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863870159] [2024-11-16 19:20:45,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:20:45,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:20:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:20:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:20:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:20:45,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 109 [2024-11-16 19:20:45,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 245 flow. Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 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) [2024-11-16 19:20:45,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:20:45,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 109 [2024-11-16 19:20:45,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:20:51,249 INFO L124 PetriNetUnfolderBase]: 30001/51544 cut-off events. [2024-11-16 19:20:51,249 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-11-16 19:20:51,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94543 conditions, 51544 events. 30001/51544 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 469634 event pairs, 29770 based on Foata normal form. 25344/75263 useless extension candidates. Maximal degree in co-relation 47569. Up to 42200 conditions per place. [2024-11-16 19:20:51,489 INFO L140 encePairwiseOnDemand]: 86/109 looper letters, 36 selfloop transitions, 0 changer transitions 13/86 dead transitions. [2024-11-16 19:20:51,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 287 flow [2024-11-16 19:20:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:20:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:20:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2024-11-16 19:20:51,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6926605504587156 [2024-11-16 19:20:51,492 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 245 flow. Second operand 2 states and 151 transitions. [2024-11-16 19:20:51,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 287 flow [2024-11-16 19:20:51,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:20:51,495 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 164 flow [2024-11-16 19:20:51,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-11-16 19:20:51,496 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2024-11-16 19:20:51,497 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 164 flow [2024-11-16 19:20:51,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 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) [2024-11-16 19:20:51,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:51,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:20:51,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:20:51,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:51,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -43667425, now seen corresponding path program 1 times [2024-11-16 19:20:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:51,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738289872] [2024-11-16 19:20:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:51,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:20:51,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738289872] [2024-11-16 19:20:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738289872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:20:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:20:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:20:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44546810] [2024-11-16 19:20:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:20:51,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:20:51,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:20:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:20:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:20:51,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2024-11-16 19:20:51,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-16 19:20:51,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:20:51,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2024-11-16 19:20:51,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:20:54,146 INFO L124 PetriNetUnfolderBase]: 22113/38016 cut-off events. [2024-11-16 19:20:54,146 INFO L125 PetriNetUnfolderBase]: For 790/790 co-relation queries the response was YES. [2024-11-16 19:20:54,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69449 conditions, 38016 events. 22113/38016 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 333223 event pairs, 14130 based on Foata normal form. 0/36150 useless extension candidates. Maximal degree in co-relation 69443. Up to 30984 conditions per place. [2024-11-16 19:20:54,589 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 47 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-11-16 19:20:54,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 284 flow [2024-11-16 19:20:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:20:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:20:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-11-16 19:20:54,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5198776758409785 [2024-11-16 19:20:54,595 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 164 flow. Second operand 3 states and 170 transitions. [2024-11-16 19:20:54,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 284 flow [2024-11-16 19:20:54,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 19:20:54,600 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 174 flow [2024-11-16 19:20:54,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-16 19:20:54,601 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -6 predicate places. [2024-11-16 19:20:54,601 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 174 flow [2024-11-16 19:20:54,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-16 19:20:54,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:54,601 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:20:54,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:20:54,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:54,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash 557683690, now seen corresponding path program 1 times [2024-11-16 19:20:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:54,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718452198] [2024-11-16 19:20:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:54,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:20:54,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718452198] [2024-11-16 19:20:54,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718452198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:20:54,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743502969] [2024-11-16 19:20:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:54,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:20:54,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:20:54,674 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) [2024-11-16 19:20:54,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:20:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:54,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:20:54,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:20:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:54,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:20:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:54,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743502969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:20:54,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:20:54,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-16 19:20:54,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356963742] [2024-11-16 19:20:54,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:20:54,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:20:54,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:20:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:20:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:20:54,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 109 [2024-11-16 19:20:54,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 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) [2024-11-16 19:20:54,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:20:54,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 109 [2024-11-16 19:20:54,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:20:56,200 INFO L124 PetriNetUnfolderBase]: 7668/13921 cut-off events. [2024-11-16 19:20:56,201 INFO L125 PetriNetUnfolderBase]: For 3119/3119 co-relation queries the response was YES. [2024-11-16 19:20:56,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26382 conditions, 13921 events. 7668/13921 cut-off events. For 3119/3119 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 112595 event pairs, 800 based on Foata normal form. 1110/14898 useless extension candidates. Maximal degree in co-relation 26374. Up to 7400 conditions per place. [2024-11-16 19:20:56,282 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 88 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-16 19:20:56,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 124 transitions, 458 flow [2024-11-16 19:20:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:20:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:20:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 335 transitions. [2024-11-16 19:20:56,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5122324159021406 [2024-11-16 19:20:56,284 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 174 flow. Second operand 6 states and 335 transitions. [2024-11-16 19:20:56,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 124 transitions, 458 flow [2024-11-16 19:20:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:20:56,291 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 166 flow [2024-11-16 19:20:56,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-11-16 19:20:56,292 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -10 predicate places. [2024-11-16 19:20:56,292 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 166 flow [2024-11-16 19:20:56,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 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) [2024-11-16 19:20:56,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:56,293 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-16 19:20:56,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:20:56,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:20:56,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:56,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 267131975, now seen corresponding path program 1 times [2024-11-16 19:20:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755612401] [2024-11-16 19:20:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:56,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:20:56,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:20:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:20:56,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:20:56,546 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:20:56,548 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-16 19:20:56,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-16 19:20:56,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:20:56,550 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-16 19:20:56,551 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:20:56,551 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-16 19:20:56,589 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-16 19:20:56,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 136 transitions, 312 flow [2024-11-16 19:20:56,629 INFO L124 PetriNetUnfolderBase]: 81/332 cut-off events. [2024-11-16 19:20:56,629 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-16 19:20:56,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 332 events. 81/332 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1420 event pairs, 6 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 242. Up to 32 conditions per place. [2024-11-16 19:20:56,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 136 transitions, 312 flow [2024-11-16 19:20:56,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 136 transitions, 312 flow [2024-11-16 19:20:56,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:20:56,639 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=LoopHeads, 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;@1fd98e01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:20:56,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 19:20:56,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:20:56,643 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2024-11-16 19:20:56,643 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:20:56,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:20:56,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:20:56,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:20:56,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:20:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1283313317, now seen corresponding path program 1 times [2024-11-16 19:20:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:20:56,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771589533] [2024-11-16 19:20:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:20:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:20:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:20:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:20:56,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:20:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771589533] [2024-11-16 19:20:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771589533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:20:56,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:20:56,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:20:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359555719] [2024-11-16 19:20:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:20:56,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:20:56,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:20:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:20:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:20:56,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 136 [2024-11-16 19:20:56,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 136 transitions, 312 flow. Second operand has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-11-16 19:20:56,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:20:56,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 136 [2024-11-16 19:20:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand