./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/pthread/reorder_2.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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:44:20,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:44:20,943 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:44:20,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:44:20,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:44:20,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:44:20,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:44:20,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:44:20,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:44:20,964 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:44:20,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:44:20,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:44:20,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:44:20,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:44:20,965 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:44:20,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:44:20,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:44:20,966 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:44:20,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:44:20,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:44:20,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:44:20,967 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:44:20,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:44:20,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:44:20,968 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2025-03-14 00:44:21,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:44:21,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:44:21,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:44:21,204 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:44:21,204 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:44:21,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_2.i [2025-03-14 00:44:22,381 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030c555ca/cd2dafa3c6134750b103b97047a37878/FLAG95c776b0b [2025-03-14 00:44:22,674 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:44:22,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2.i [2025-03-14 00:44:22,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030c555ca/cd2dafa3c6134750b103b97047a37878/FLAG95c776b0b [2025-03-14 00:44:22,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030c555ca/cd2dafa3c6134750b103b97047a37878 [2025-03-14 00:44:22,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:44:22,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:44:22,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:44:22,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:44:22,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:44:22,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:44:22" (1/1) ... [2025-03-14 00:44:22,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434c1a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:22, skipping insertion in model container [2025-03-14 00:44:22,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:44:22" (1/1) ... [2025-03-14 00:44:23,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:44:23,363 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/pthread/reorder_2.i[60219,60232] [2025-03-14 00:44:23,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:44:23,377 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:44:23,430 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/pthread/reorder_2.i[60219,60232] [2025-03-14 00:44:23,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:44:23,477 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:44:23,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23 WrapperNode [2025-03-14 00:44:23,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:44:23,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:44:23,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:44:23,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:44:23,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,510 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2025-03-14 00:44:23,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:44:23,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:44:23,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:44:23,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:44:23,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,533 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-14 00:44:23,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,540 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:44:23,545 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:44:23,545 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:44:23,545 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:44:23,546 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (1/1) ... [2025-03-14 00:44:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:44:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:44:23,572 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) [2025-03-14 00:44:23,574 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 [2025-03-14 00:44:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-03-14 00:44:23,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-03-14 00:44:23,591 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 00:44:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-14 00:44:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:44:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:44:23,593 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:44:23,698 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:44:23,699 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:44:23,851 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260: havoc main_~#setPool~0#1.base, main_~#setPool~0#1.offset; [2025-03-14 00:44:23,851 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260-1: SUMMARY for call ULTIMATE.dealloc(main_~#setPool~0#1.base, main_~#setPool~0#1.offset); srcloc: null [2025-03-14 00:44:23,851 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261: havoc main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset; [2025-03-14 00:44:23,851 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261-1: SUMMARY for call ULTIMATE.dealloc(main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset); srcloc: null [2025-03-14 00:44:23,852 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:44:23,853 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:44:23,853 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:44:23,990 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:44:23,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:44:23 BoogieIcfgContainer [2025-03-14 00:44:23,992 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:44:23,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:44:23,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:44:23,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:44:23,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:44:22" (1/3) ... [2025-03-14 00:44:23,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1728e295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:44:23, skipping insertion in model container [2025-03-14 00:44:23,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:44:23" (2/3) ... [2025-03-14 00:44:23,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1728e295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:44:23, skipping insertion in model container [2025-03-14 00:44:23,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:44:23" (3/3) ... [2025-03-14 00:44:23,999 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2025-03-14 00:44:24,009 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:44:24,014 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 27 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-14 00:44:24,014 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:44:24,048 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-14 00:44:24,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 86 flow [2025-03-14 00:44:24,127 INFO L124 PetriNetUnfolderBase]: 10/72 cut-off events. [2025-03-14 00:44:24,130 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-14 00:44:24,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 72 events. 10/72 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 274 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 38. Up to 7 conditions per place. [2025-03-14 00:44:24,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 33 transitions, 86 flow [2025-03-14 00:44:24,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 31 transitions, 76 flow [2025-03-14 00:44:24,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:44:24,153 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;@2d567545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:44:24,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 00:44:24,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:44:24,163 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-03-14 00:44:24,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:44:24,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:24,164 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-14 00:44:24,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 00:44:24,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash 319171763, now seen corresponding path program 1 times [2025-03-14 00:44:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:24,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399863801] [2025-03-14 00:44:24,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:24,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-14 00:44:24,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-14 00:44:24,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:24,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 00:44:24,296 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 00:44:24,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-14 00:44:24,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-14 00:44:24,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:24,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 00:44:24,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 00:44:24,343 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 00:44:24,344 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-03-14 00:44:24,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-03-14 00:44:24,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-14 00:44:24,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-03-14 00:44:24,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:44:24,347 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 00:44:24,350 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 00:44:24,351 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-14 00:44:24,368 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-03-14 00:44:24,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 51 transitions, 146 flow [2025-03-14 00:44:24,420 INFO L124 PetriNetUnfolderBase]: 63/259 cut-off events. [2025-03-14 00:44:24,421 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2025-03-14 00:44:24,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 259 events. 63/259 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1338 event pairs, 1 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 173. Up to 32 conditions per place. [2025-03-14 00:44:24,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 51 transitions, 146 flow [2025-03-14 00:44:24,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 51 transitions, 146 flow [2025-03-14 00:44:24,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:44:24,427 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;@2d567545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:44:24,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-14 00:44:24,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:44:24,438 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2025-03-14 00:44:24,438 INFO L125 PetriNetUnfolderBase]: For 8/11 co-relation queries the response was YES. [2025-03-14 00:44:24,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:24,438 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:24,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-14 00:44:24,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2053301436, now seen corresponding path program 1 times [2025-03-14 00:44:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:24,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050148209] [2025-03-14 00:44:24,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:24,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:24,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-14 00:44:24,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-14 00:44:24,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:24,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:24,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050148209] [2025-03-14 00:44:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050148209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:44:24,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:44:24,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:44:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227119145] [2025-03-14 00:44:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:44:24,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:44:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:24,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:44:24,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:44:24,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2025-03-14 00:44:24,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:44:24,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:24,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2025-03-14 00:44:24,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:44:27,703 INFO L124 PetriNetUnfolderBase]: 35521/50675 cut-off events. [2025-03-14 00:44:27,704 INFO L125 PetriNetUnfolderBase]: For 5704/5704 co-relation queries the response was YES. [2025-03-14 00:44:27,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103312 conditions, 50675 events. 35521/50675 cut-off events. For 5704/5704 co-relation queries the response was YES. Maximal size of possible extension queue 1932. Compared 349256 event pairs, 9324 based on Foata normal form. 3441/48316 useless extension candidates. Maximal degree in co-relation 79367. Up to 30020 conditions per place. [2025-03-14 00:44:27,945 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 160 selfloop transitions, 14 changer transitions 6/189 dead transitions. [2025-03-14 00:44:27,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 189 transitions, 886 flow [2025-03-14 00:44:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-14 00:44:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-14 00:44:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2025-03-14 00:44:27,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6446078431372549 [2025-03-14 00:44:27,959 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 146 flow. Second operand 8 states and 263 transitions. [2025-03-14 00:44:27,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 189 transitions, 886 flow [2025-03-14 00:44:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 189 transitions, 886 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 00:44:28,028 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 249 flow [2025-03-14 00:44:28,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2025-03-14 00:44:28,033 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-03-14 00:44:28,033 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 249 flow [2025-03-14 00:44:28,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:44:28,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:28,034 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-14 00:44:28,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:44:28,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-14 00:44:28,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:28,035 INFO L85 PathProgramCache]: Analyzing trace with hash 269216096, now seen corresponding path program 1 times [2025-03-14 00:44:28,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:28,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992188442] [2025-03-14 00:44:28,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:28,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-14 00:44:28,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-14 00:44:28,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:28,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 00:44:28,060 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 00:44:28,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-14 00:44:28,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-14 00:44:28,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:28,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 00:44:28,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 00:44:28,082 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 00:44:28,083 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-14 00:44:28,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-14 00:44:28,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-14 00:44:28,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-14 00:44:28,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-14 00:44:28,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 00:44:28,084 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 00:44:28,085 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 00:44:28,085 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-14 00:44:28,111 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-03-14 00:44:28,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 69 transitions, 210 flow [2025-03-14 00:44:28,164 INFO L124 PetriNetUnfolderBase]: 348/950 cut-off events. [2025-03-14 00:44:28,164 INFO L125 PetriNetUnfolderBase]: For 419/436 co-relation queries the response was YES. [2025-03-14 00:44:28,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 950 events. 348/950 cut-off events. For 419/436 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5641 event pairs, 32 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 681. Up to 192 conditions per place. [2025-03-14 00:44:28,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 69 transitions, 210 flow [2025-03-14 00:44:28,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 69 transitions, 210 flow [2025-03-14 00:44:28,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:44:28,175 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;@2d567545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:44:28,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-14 00:44:28,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:44:28,178 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2025-03-14 00:44:28,178 INFO L125 PetriNetUnfolderBase]: For 12/15 co-relation queries the response was YES. [2025-03-14 00:44:28,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:44:28,178 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:44:28,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:44:28,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:44:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash -398198498, now seen corresponding path program 1 times [2025-03-14 00:44:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:44:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184552295] [2025-03-14 00:44:28,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:44:28,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:44:28,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-14 00:44:28,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-14 00:44:28,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:44:28,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:44:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:44:28,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:44:28,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184552295] [2025-03-14 00:44:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184552295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:44:28,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:44:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 00:44:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480990566] [2025-03-14 00:44:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:44:28,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 00:44:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:44:28,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 00:44:28,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 00:44:28,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 69 [2025-03-14 00:44:28,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-14 00:44:28,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:44:28,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 69 [2025-03-14 00:44:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand