/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:44:28,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:44:28,184 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:44:28,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:44:28,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:44:28,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:44:28,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:44:28,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:44:28,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:44:28,204 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:44:28,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:44:28,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:44:28,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:44:28,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:44:28,204 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:44:28,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:44:28,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:44:28,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:44:28,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:44:28,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:44:28,206 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:44:28,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:44:28,208 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:44:28,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:44:28,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:44:28,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:44:28,434 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:44:28,434 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:44:28,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2025-04-13 19:44:29,777 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903914919/b9710d51515147e085050c4e7ab83267/FLAGce014a086 [2025-04-13 19:44:30,031 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:44:30,031 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2025-04-13 19:44:30,047 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903914919/b9710d51515147e085050c4e7ab83267/FLAGce014a086 [2025-04-13 19:44:30,930 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903914919/b9710d51515147e085050c4e7ab83267 [2025-04-13 19:44:30,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:44:30,933 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:44:30,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:44:30,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:44:30,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:44:30,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:44:30" (1/1) ... [2025-04-13 19:44:30,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794ed10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:30, skipping insertion in model container [2025-04-13 19:44:30,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:44:30" (1/1) ... [2025-04-13 19:44:30,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:44:31,248 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2025-04-13 19:44:31,262 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,262 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,262 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,263 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:44:31,317 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:44:31,355 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2025-04-13 19:44:31,361 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,362 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,362 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,362 WARN L1730 CHandler]: Possible shadowing of function new [2025-04-13 19:44:31,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:44:31,429 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:44:31,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31 WrapperNode [2025-04-13 19:44:31,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:44:31,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:44:31,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:44:31,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:44:31,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,487 INFO L138 Inliner]: procedures = 280, calls = 135, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 291 [2025-04-13 19:44:31,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:44:31,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:44:31,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:44:31,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:44:31,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,545 INFO L175 MemorySlicer]: Split 110 memory accesses to 4 slices as follows [2, 5, 101, 2]. 92 percent of accesses are in the largest equivalence class. The 87 initializations are split as follows [2, 5, 80, 0]. The 13 writes are split as follows [0, 0, 12, 1]. [2025-04-13 19:44:31,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,561 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:44:31,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:44:31,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:44:31,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:44:31,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (1/1) ... [2025-04-13 19:44:31,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:44:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:44:31,618 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) [2025-04-13 19:44:31,624 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 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:44:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-13 19:44:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 19:44:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:44:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:44:31,645 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:44:31,781 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:44:31,783 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:44:32,167 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:44:32,167 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:44:32,167 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:44:32,766 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,768 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,784 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,786 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,786 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,788 WARN L179 LargeBlockEncoding]: Complex 4:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,789 WARN L179 LargeBlockEncoding]: Complex 3:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:44:32,797 INFO L313 CfgBuilder]: Removed 5 assume(true) statements. [2025-04-13 19:44:32,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:44:32 BoogieIcfgContainer [2025-04-13 19:44:32,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:44:32,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:44:32,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:44:32,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:44:32,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:44:30" (1/3) ... [2025-04-13 19:44:32,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d193b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:44:32, skipping insertion in model container [2025-04-13 19:44:32,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:44:31" (2/3) ... [2025-04-13 19:44:32,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d193b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:44:32, skipping insertion in model container [2025-04-13 19:44:32,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:44:32" (3/3) ... [2025-04-13 19:44:32,803 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2025-04-13 19:44:32,813 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:44:32,815 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_92-evilcollapse_racing.i that has 2 procedures, 28 locations, 53 edges, 1 initial locations, 11 loop locations, and 1 error locations. [2025-04-13 19:44:32,815 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:44:32,854 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-13 19:44:32,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 54 transitions, 115 flow [2025-04-13 19:44:32,900 INFO L116 PetriNetUnfolderBase]: 24/54 cut-off events. [2025-04-13 19:44:32,901 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:44:32,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 24/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 41. Up to 7 conditions per place. [2025-04-13 19:44:32,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 54 transitions, 115 flow [2025-04-13 19:44:32,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 47 transitions, 98 flow [2025-04-13 19:44:32,915 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:44:32,924 INFO L340 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;@4dd5a45a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:44:32,924 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:44:32,933 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:44:32,934 INFO L116 PetriNetUnfolderBase]: 2/10 cut-off events. [2025-04-13 19:44:32,934 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:44:32,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:44:32,934 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:44:32,935 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:44:32,939 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:44:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash 26247674, now seen corresponding path program 1 times [2025-04-13 19:44:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:44:32,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444081166] [2025-04-13 19:44:32,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:44:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:44:33,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:44:33,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:44:33,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:44:33,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:44:33,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444081166] [2025-04-13 19:44:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444081166] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:44:33,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:44:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:44:33,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239324535] [2025-04-13 19:44:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:44:33,057 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:44:33,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:44:33,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:44:33,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:44:33,079 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 54 [2025-04-13 19:44:33,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 47 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-04-13 19:44:33,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:44:33,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 54 [2025-04-13 19:44:33,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:44:33,312 INFO L116 PetriNetUnfolderBase]: 51/117 cut-off events. [2025-04-13 19:44:33,312 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:44:33,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 117 events. 51/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 302 event pairs, 38 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 221. Up to 114 conditions per place. [2025-04-13 19:44:33,314 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 29 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2025-04-13 19:44:33,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 124 flow [2025-04-13 19:44:33,317 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:44:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:44:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 49 transitions. [2025-04-13 19:44:33,326 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2025-04-13 19:44:33,327 INFO L175 Difference]: Start difference. First operand has 30 places, 47 transitions, 98 flow. Second operand 2 states and 49 transitions. [2025-04-13 19:44:33,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 124 flow [2025-04-13 19:44:33,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:44:33,330 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 66 flow [2025-04-13 19:44:33,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2025-04-13 19:44:33,334 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2025-04-13 19:44:33,334 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 66 flow [2025-04-13 19:44:33,334 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-04-13 19:44:33,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:44:33,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 19:44:33,334 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:44:33,334 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:44:33,335 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:44:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash 810585122, now seen corresponding path program 1 times [2025-04-13 19:44:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:44:33,335 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40833709] [2025-04-13 19:44:33,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:44:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:44:33,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 19:44:33,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 19:44:33,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:44:33,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:44:33,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40833709] [2025-04-13 19:44:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40833709] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:44:33,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:44:33,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:44:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118409885] [2025-04-13 19:44:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:44:33,592 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:44:33,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:44:33,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:44:33,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:44:33,593 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 54 [2025-04-13 19:44:33,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-04-13 19:44:33,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:44:33,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 54 [2025-04-13 19:44:33,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:44:34,493 INFO L116 PetriNetUnfolderBase]: 51/118 cut-off events. [2025-04-13 19:44:34,493 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:44:34,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 118 events. 51/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 302 event pairs, 38 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 234. Up to 114 conditions per place. [2025-04-13 19:44:34,494 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2025-04-13 19:44:34,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 128 flow [2025-04-13 19:44:34,495 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:44:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:44:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-04-13 19:44:34,495 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.22839506172839505 [2025-04-13 19:44:34,495 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 66 flow. Second operand 3 states and 37 transitions. [2025-04-13 19:44:34,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 128 flow [2025-04-13 19:44:34,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:44:34,497 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 78 flow [2025-04-13 19:44:34,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2025-04-13 19:44:34,498 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-04-13 19:44:34,498 INFO L485 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 78 flow [2025-04-13 19:44:34,498 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-04-13 19:44:34,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:44:34,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-13 19:44:34,498 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:44:34,498 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:44:34,499 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:44:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash -644757766, now seen corresponding path program 1 times [2025-04-13 19:44:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:44:34,499 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374279098] [2025-04-13 19:44:34,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:44:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:44:34,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:44:34,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:44:34,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:44:34,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:34,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:44:34,837 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374279098] [2025-04-13 19:44:34,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374279098] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:44:34,838 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616446488] [2025-04-13 19:44:34,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:44:34,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:44:34,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:44:34,841 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) [2025-04-13 19:44:34,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 19:44:34,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:44:35,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:44:35,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:44:35,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:35,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 19:44:35,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:44:35,156 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 50 [2025-04-13 19:44:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:35,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:44:35,500 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 19:44:35,500 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 339 treesize of output 360 [2025-04-13 19:44:35,551 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 19:44:35,552 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 333 treesize of output 354 [2025-04-13 19:44:35,596 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 19:44:35,596 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 327 treesize of output 348 [2025-04-13 19:44:35,730 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2025-04-13 19:44:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616446488] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:44:35,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:44:35,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-04-13 19:44:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048806777] [2025-04-13 19:44:35,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:44:35,793 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 19:44:35,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:44:35,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 19:44:35,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-04-13 19:44:35,793 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 54 [2025-04-13 19:44:35,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 78 flow. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2025-04-13 19:44:35,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:44:35,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 54 [2025-04-13 19:44:35,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:44:38,218 INFO L116 PetriNetUnfolderBase]: 51/122 cut-off events. [2025-04-13 19:44:38,218 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:44:38,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 122 events. 51/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 302 event pairs, 38 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 251. Up to 114 conditions per place. [2025-04-13 19:44:38,219 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2025-04-13 19:44:38,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 162 flow [2025-04-13 19:44:38,220 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 19:44:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 19:44:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 52 transitions. [2025-04-13 19:44:38,221 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.13756613756613756 [2025-04-13 19:44:38,221 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 78 flow. Second operand 7 states and 52 transitions. [2025-04-13 19:44:38,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 162 flow [2025-04-13 19:44:38,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-13 19:44:38,223 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 120 flow [2025-04-13 19:44:38,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2025-04-13 19:44:38,223 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2025-04-13 19:44:38,223 INFO L485 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 120 flow [2025-04-13 19:44:38,223 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2025-04-13 19:44:38,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:44:38,225 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1] [2025-04-13 19:44:38,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 19:44:38,426 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:44:38,426 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:44:38,426 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:44:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1915523322, now seen corresponding path program 2 times [2025-04-13 19:44:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:44:38,427 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711359948] [2025-04-13 19:44:38,427 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:44:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:44:38,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-04-13 19:44:38,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:44:38,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:44:38,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:39,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:44:39,265 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711359948] [2025-04-13 19:44:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711359948] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:44:39,265 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077533711] [2025-04-13 19:44:39,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:44:39,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:44:39,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:44:39,267 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) [2025-04-13 19:44:39,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 19:44:39,452 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-04-13 19:44:39,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:44:39,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:44:39,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:39,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 19:44:39,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:44:39,591 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2025-04-13 19:44:39,607 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,611 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,617 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,621 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,622 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,626 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,628 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2025-04-13 19:44:39,631 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2025-04-13 19:44:39,642 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,649 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:39,657 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 31 [2025-04-13 19:44:39,660 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2025-04-13 19:44:39,667 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,673 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:39,675 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 31 [2025-04-13 19:44:39,678 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2025-04-13 19:44:39,685 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:39,687 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2025-04-13 19:44:39,690 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 19:44:39,696 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,738 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,744 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,746 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2025-04-13 19:44:39,748 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2025-04-13 19:44:39,751 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,753 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,765 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:39,775 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 31 [2025-04-13 19:44:39,778 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2025-04-13 19:44:39,784 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:39,786 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2025-04-13 19:44:39,789 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 19:44:39,794 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,801 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2025-04-13 19:44:39,807 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,852 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,859 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,860 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2025-04-13 19:44:39,863 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 19:44:39,867 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,871 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,878 WARN L195 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,881 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,887 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:39,889 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2025-04-13 19:44:39,892 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 19:44:39,899 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:39,904 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2025-04-13 19:44:39,907 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:39,945 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2025-04-13 19:44:39,960 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,961 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,967 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,967 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,971 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,977 INFO L325 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2025-04-13 19:44:39,977 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 87 [2025-04-13 19:44:39,981 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 38 [2025-04-13 19:44:39,986 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,986 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:39,990 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 19:44:39,991 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2025-04-13 19:44:39,993 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 19:44:39,999 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:40,002 WARN L181 Elim1Store]: Array PQE input equivalent to false [2025-04-13 19:44:40,007 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:40,042 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:40,048 INFO L325 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-04-13 19:44:40,049 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 107 [2025-04-13 19:44:40,053 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 48 [2025-04-13 19:44:40,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 19:44:40,061 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2025-04-13 19:44:40,064 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 19:44:40,074 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:40,078 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-13 19:44:40,083 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 19:44:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:40,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:44:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:40,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077533711] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:44:40,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:44:40,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-04-13 19:44:40,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066582115] [2025-04-13 19:44:40,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:44:40,485 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 19:44:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:44:40,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 19:44:40,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=200, Unknown=0, NotChecked=0, Total=342 [2025-04-13 19:44:40,486 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 54 [2025-04-13 19:44:40,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 120 flow. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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) [2025-04-13 19:44:40,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:44:40,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 54 [2025-04-13 19:44:40,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:44:41,646 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2025-04-13 19:44:44,813 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-04-13 19:44:48,454 INFO L116 PetriNetUnfolderBase]: 51/129 cut-off events. [2025-04-13 19:44:48,454 INFO L117 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-04-13 19:44:48,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 129 events. 51/129 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 302 event pairs, 38 based on Foata normal form. 7/104 useless extension candidates. Maximal degree in co-relation 292. Up to 114 conditions per place. [2025-04-13 19:44:48,455 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2025-04-13 19:44:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 244 flow [2025-04-13 19:44:48,455 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 19:44:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-13 19:44:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 76 transitions. [2025-04-13 19:44:48,456 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.10052910052910052 [2025-04-13 19:44:48,456 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 120 flow. Second operand 14 states and 76 transitions. [2025-04-13 19:44:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 244 flow [2025-04-13 19:44:48,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 226 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-04-13 19:44:48,459 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 200 flow [2025-04-13 19:44:48,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=200, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2025-04-13 19:44:48,460 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2025-04-13 19:44:48,460 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 200 flow [2025-04-13 19:44:48,460 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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) [2025-04-13 19:44:48,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:44:48,460 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1] [2025-04-13 19:44:48,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 19:44:48,660 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-04-13 19:44:48,661 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:44:48,661 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:44:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash -323260894, now seen corresponding path program 3 times [2025-04-13 19:44:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:44:48,661 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547658675] [2025-04-13 19:44:48,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:44:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:44:48,824 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 7 equivalence classes. [2025-04-13 19:44:52,284 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 19:44:52,284 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 19:44:52,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:44:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:44:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:44:53,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547658675] [2025-04-13 19:44:53,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547658675] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:44:53,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302118905] [2025-04-13 19:44:53,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:44:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:44:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:44:53,757 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) [2025-04-13 19:44:53,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 19:44:54,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 7 equivalence classes. Received shutdown request... [2025-04-13 19:59:10,896 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 19:59:10,899 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 19:59:11,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2025-04-13 19:59:12,096 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2025-04-13 19:59:12,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2025-04-13 19:59:12,158 WARN L301 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-04-13 19:59:12,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-04-13 19:59:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-04-13 19:59:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651250175] [2025-04-13 19:59:12,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-04-13 19:59:12,158 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 19:59:12,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:12,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 19:59:12,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2025-04-13 19:59:12,159 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 54 [2025-04-13 19:59:12,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 200 flow. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 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) [2025-04-13 19:59:12,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:12,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 54 [2025-04-13 19:59:12,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:12,160 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 19:59:12,161 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:59:12,161 WARN L610 AbstractCegarLoop]: Verification canceled: while executing Executor. [2025-04-13 19:59:12,163 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 19:59:12,163 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 19:59:12,163 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-04-13 19:59:12,166 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:59:12,166 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:59:12,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:59:12 BasicIcfg [2025-04-13 19:59:12,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:59:12,171 INFO L158 Benchmark]: Toolchain (without parser) took 881238.50ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 98.3MB in the beginning and 605.2MB in the end (delta: -506.9MB). Peak memory consumption was 591.7MB. Max. memory is 8.0GB. [2025-04-13 19:59:12,172 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:59:12,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.60ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 62.7MB in the end (delta: 35.5MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2025-04-13 19:59:12,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.69ms. Allocated memory is still 142.6MB. Free memory was 62.7MB in the beginning and 58.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:59:12,172 INFO L158 Benchmark]: Boogie Preprocessor took 96.55ms. Allocated memory is still 142.6MB. Free memory was 58.5MB in the beginning and 54.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:59:12,172 INFO L158 Benchmark]: RCFGBuilder took 1212.01ms. Allocated memory is still 142.6MB. Free memory was 54.3MB in the beginning and 73.0MB in the end (delta: -18.6MB). Peak memory consumption was 37.8MB. Max. memory is 8.0GB. [2025-04-13 19:59:12,173 INFO L158 Benchmark]: TraceAbstraction took 879372.52ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 71.7MB in the beginning and 605.2MB in the end (delta: -533.5MB). Peak memory consumption was 562.5MB. Max. memory is 8.0GB. [2025-04-13 19:59:12,173 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 496.60ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 62.7MB in the end (delta: 35.5MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.69ms. Allocated memory is still 142.6MB. Free memory was 62.7MB in the beginning and 58.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 96.55ms. Allocated memory is still 142.6MB. Free memory was 58.5MB in the beginning and 54.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1212.01ms. Allocated memory is still 142.6MB. Free memory was 54.3MB in the beginning and 73.0MB in the end (delta: -18.6MB). Peak memory consumption was 37.8MB. Max. memory is 8.0GB. * TraceAbstraction took 879372.52ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 71.7MB in the beginning and 605.2MB in the end (delta: -533.5MB). Peak memory consumption was 562.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1072]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 50 locations, 94 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 879.3s, OverallIterations: 5, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 546 IncrementalHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 546 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 65 ConstructedInterpolants, 4 QuantifiedInterpolants, 421 SizeOfPredicates, 61 NumberOfNonLiveVariables, 1214 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 0/126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown