./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/goblint-regression/28-race_reach_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:16:11,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:16:11,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:16:11,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:16:11,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:16:11,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:16:11,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:16:11,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:16:11,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:16:11,617 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:16:11,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:16:11,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:16:11,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:16:11,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:16:11,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:16:11,620 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:16:11,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:16:11,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:16:11,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:16:11,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:16:11,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:16:11,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:16:11,622 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 -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2025-03-04 02:16:11,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:16:11,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:16:11,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:16:11,851 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:16:11,851 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:16:11,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-03-04 02:16:12,973 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5864bc95/ac233c8fdb704e3e8212c247da3e5213/FLAG19dc187e9 [2025-03-04 02:16:13,243 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:16:13,244 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-03-04 02:16:13,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5864bc95/ac233c8fdb704e3e8212c247da3e5213/FLAG19dc187e9 [2025-03-04 02:16:13,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5864bc95/ac233c8fdb704e3e8212c247da3e5213 [2025-03-04 02:16:13,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:16:13,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:16:13,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:16:13,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:16:13,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:16:13,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:16:13" (1/1) ... [2025-03-04 02:16:13,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73825fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:13, skipping insertion in model container [2025-03-04 02:16:13,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:16:13" (1/1) ... [2025-03-04 02:16:13,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:16:13,896 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_91-arrayloop2_racefree.i[47038,47051] [2025-03-04 02:16:13,908 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,908 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,909 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,909 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:16:13,954 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:16:13,987 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_91-arrayloop2_racefree.i[47038,47051] [2025-03-04 02:16:13,993 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,993 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,993 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:13,994 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:14,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:16:14,058 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:16:14,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14 WrapperNode [2025-03-04 02:16:14,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:16:14,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:16:14,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:16:14,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:16:14,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,110 INFO L138 Inliner]: procedures = 279, calls = 119, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2025-03-04 02:16:14,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:16:14,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:16:14,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:16:14,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:16:14,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,150 INFO L175 MemorySlicer]: Split 96 memory accesses to 4 slices as follows [2, 5, 87, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0]. The 12 writes are split as follows [0, 0, 11, 1]. [2025-03-04 02:16:14,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,166 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:16:14,178 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:16:14,178 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:16:14,179 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:16:14,179 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (1/1) ... [2025-03-04 02:16:14,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:16:14,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:14,206 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) [2025-03-04 02:16:14,211 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 [2025-03-04 02:16:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 02:16:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 02:16:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 02:16:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 02:16:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 02:16:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 02:16:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:16:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:16:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 02:16:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 02:16:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:16:14,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:16:14,237 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:16:14,362 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:16:14,364 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:16:14,619 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-04 02:16:14,619 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-04 02:16:14,686 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:16:14,686 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:16:15,048 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:16:15,048 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:16:15,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:16:15 BoogieIcfgContainer [2025-03-04 02:16:15,049 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:16:15,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:16:15,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:16:15,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:16:15,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:16:13" (1/3) ... [2025-03-04 02:16:15,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c7f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:16:15, skipping insertion in model container [2025-03-04 02:16:15,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:14" (2/3) ... [2025-03-04 02:16:15,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c7f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:16:15, skipping insertion in model container [2025-03-04 02:16:15,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:16:15" (3/3) ... [2025-03-04 02:16:15,055 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2025-03-04 02:16:15,067 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:16:15,068 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_91-arrayloop2_racefree.i that has 2 procedures, 42 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-03-04 02:16:15,068 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:16:15,111 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 02:16:15,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 59 transitions, 125 flow [2025-03-04 02:16:15,171 INFO L124 PetriNetUnfolderBase]: 17/63 cut-off events. [2025-03-04 02:16:15,175 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 02:16:15,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 17/63 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2025-03-04 02:16:15,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 59 transitions, 125 flow [2025-03-04 02:16:15,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 57 transitions, 118 flow [2025-03-04 02:16:15,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:16:15,198 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;@6e8a7c14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:16:15,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-04 02:16:15,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:16:15,208 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-03-04 02:16:15,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:15,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:15,209 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 02:16:15,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:15,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1273263059, now seen corresponding path program 1 times [2025-03-04 02:16:15,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194586616] [2025-03-04 02:16:15,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:15,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 02:16:15,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 02:16:15,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:15,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194586616] [2025-03-04 02:16:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194586616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:16:15,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:16:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:16:15,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103680950] [2025-03-04 02:16:15,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:16:15,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:16:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:15,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:16:15,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:16:15,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:15,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 57 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-04 02:16:15,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:15,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:15,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:15,724 INFO L124 PetriNetUnfolderBase]: 111/310 cut-off events. [2025-03-04 02:16:15,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:15,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 310 events. 111/310 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1283 event pairs, 90 based on Foata normal form. 36/284 useless extension candidates. Maximal degree in co-relation 509. Up to 226 conditions per place. [2025-03-04 02:16:15,728 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2025-03-04 02:16:15,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 170 flow [2025-03-04 02:16:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:16:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:16:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-04 02:16:15,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5141242937853108 [2025-03-04 02:16:15,737 INFO L175 Difference]: Start difference. First operand has 44 places, 57 transitions, 118 flow. Second operand 3 states and 91 transitions. [2025-03-04 02:16:15,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 170 flow [2025-03-04 02:16:15,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 02:16:15,743 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 108 flow [2025-03-04 02:16:15,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-03-04 02:16:15,749 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2025-03-04 02:16:15,749 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 108 flow [2025-03-04 02:16:15,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-04 02:16:15,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:15,750 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:15,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:16:15,751 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:15,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:15,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1529700260, now seen corresponding path program 1 times [2025-03-04 02:16:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:15,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302993423] [2025-03-04 02:16:15,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:15,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:15,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:16:15,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:16:15,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:15,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:15,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:15,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302993423] [2025-03-04 02:16:15,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302993423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:16:15,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:16:15,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:16:15,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396087269] [2025-03-04 02:16:15,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:16:15,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:16:15,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:15,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:16:15,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:16:15,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:15,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2025-03-04 02:16:15,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:15,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:15,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:16,045 INFO L124 PetriNetUnfolderBase]: 111/312 cut-off events. [2025-03-04 02:16:16,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:16,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 312 events. 111/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1289 event pairs, 90 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 536. Up to 229 conditions per place. [2025-03-04 02:16:16,047 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2025-03-04 02:16:16,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 176 flow [2025-03-04 02:16:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:16:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:16:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-03-04 02:16:16,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2025-03-04 02:16:16,049 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 108 flow. Second operand 3 states and 78 transitions. [2025-03-04 02:16:16,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 176 flow [2025-03-04 02:16:16,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:16,050 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 120 flow [2025-03-04 02:16:16,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2025-03-04 02:16:16,051 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2025-03-04 02:16:16,051 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 120 flow [2025-03-04 02:16:16,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2025-03-04 02:16:16,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:16,051 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:16,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:16:16,052 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:16,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 280665709, now seen corresponding path program 1 times [2025-03-04 02:16:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:16,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825204176] [2025-03-04 02:16:16,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:16,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 02:16:16,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 02:16:16,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:16,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:16,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:16,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825204176] [2025-03-04 02:16:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825204176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250670471] [2025-03-04 02:16:16,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:16,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:16,203 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) [2025-03-04 02:16:16,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 02:16:16,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 02:16:16,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 02:16:16,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:16,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:16,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 02:16:16,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:16:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:16,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:16:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250670471] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:16:16,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:16:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-04 02:16:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473964013] [2025-03-04 02:16:16,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:16:16,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 02:16:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:16,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 02:16:16,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 02:16:16,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:16,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2025-03-04 02:16:16,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:16,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:16,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:16,685 INFO L124 PetriNetUnfolderBase]: 111/318 cut-off events. [2025-03-04 02:16:16,685 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 02:16:16,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 318 events. 111/318 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1295 event pairs, 90 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 543. Up to 229 conditions per place. [2025-03-04 02:16:16,686 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2025-03-04 02:16:16,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 204 flow [2025-03-04 02:16:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:16:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:16:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2025-03-04 02:16:16,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3615819209039548 [2025-03-04 02:16:16,688 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 120 flow. Second operand 6 states and 128 transitions. [2025-03-04 02:16:16,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 204 flow [2025-03-04 02:16:16,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:16,689 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 158 flow [2025-03-04 02:16:16,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2025-03-04 02:16:16,690 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-03-04 02:16:16,690 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 158 flow [2025-03-04 02:16:16,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2025-03-04 02:16:16,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:16,690 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:16,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 02:16:16,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:16,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:16,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1575623836, now seen corresponding path program 2 times [2025-03-04 02:16:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:16,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846698525] [2025-03-04 02:16:16,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:16:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:16,968 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 02:16:17,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 02:16:17,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:16:17,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-04 02:16:17,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:17,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846698525] [2025-03-04 02:16:17,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846698525] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:17,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600612300] [2025-03-04 02:16:17,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:16:17,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:17,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:17,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:16:17,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 02:16:17,274 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 02:16:17,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 02:16:17,360 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:16:17,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:17,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 02:16:17,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:16:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:17,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:16:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600612300] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:16:17,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:16:17,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-04 02:16:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571739189] [2025-03-04 02:16:17,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:16:17,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 02:16:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:17,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 02:16:17,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-04 02:16:17,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:17,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 158 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2025-03-04 02:16:17,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:17,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:17,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:18,367 INFO L124 PetriNetUnfolderBase]: 112/343 cut-off events. [2025-03-04 02:16:18,368 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-03-04 02:16:18,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 343 events. 112/343 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1350 event pairs, 90 based on Foata normal form. 19/303 useless extension candidates. Maximal degree in co-relation 539. Up to 226 conditions per place. [2025-03-04 02:16:18,370 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 31 selfloop transitions, 36 changer transitions 0/82 dead transitions. [2025-03-04 02:16:18,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 492 flow [2025-03-04 02:16:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-04 02:16:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-04 02:16:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 596 transitions. [2025-03-04 02:16:18,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2971086739780658 [2025-03-04 02:16:18,373 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 158 flow. Second operand 34 states and 596 transitions. [2025-03-04 02:16:18,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 492 flow [2025-03-04 02:16:18,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 450 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:18,375 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 450 flow [2025-03-04 02:16:18,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=450, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2025-03-04 02:16:18,376 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2025-03-04 02:16:18,376 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 450 flow [2025-03-04 02:16:18,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2025-03-04 02:16:18,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:18,377 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 02:16:18,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 02:16:18,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 02:16:18,577 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:18,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash 310332581, now seen corresponding path program 3 times [2025-03-04 02:16:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:18,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270626084] [2025-03-04 02:16:18,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:16:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:18,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-04 02:16:26,468 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 02:16:26,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-04 02:16:26,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-04 02:16:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270626084] [2025-03-04 02:16:26,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270626084] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:26,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796135142] [2025-03-04 02:16:26,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:16:26,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:26,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:16:26,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 02:16:27,065 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.