./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9e7c7775ec21a867278f28f86aa2e7c67e82f0f7e8b6914ee233885b56474fe --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 10:52:06,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 10:52:06,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-29 10:52:06,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 10:52:06,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 10:52:06,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 10:52:06,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 10:52:06,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 10:52:06,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 10:52:06,078 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 10:52:06,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 10:52:06,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 10:52:06,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 10:52:06,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 10:52:06,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 10:52:06,080 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 10:52:06,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 10:52:06,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 10:52:06,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 10:52:06,081 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9e7c7775ec21a867278f28f86aa2e7c67e82f0f7e8b6914ee233885b56474fe [2025-04-29 10:52:06,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 10:52:06,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 10:52:06,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 10:52:06,292 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 10:52:06,293 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 10:52:06,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.c [2025-04-29 10:52:07,542 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4cfa66a/d909147f359944dd8e3f7df62d142177/FLAG0041fba1c [2025-04-29 10:52:07,749 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 10:52:07,750 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.c [2025-04-29 10:52:07,751 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 10:52:07,751 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 10:52:07,759 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4cfa66a/d909147f359944dd8e3f7df62d142177/FLAG0041fba1c [2025-04-29 10:52:08,591 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4cfa66a/d909147f359944dd8e3f7df62d142177 [2025-04-29 10:52:08,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 10:52:08,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 10:52:08,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 10:52:08,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 10:52:08,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 10:52:08,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6cc95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08, skipping insertion in model container [2025-04-29 10:52:08,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,612 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 10:52:08,716 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.c[399,412] [2025-04-29 10:52:08,726 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 10:52:08,731 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 10:52:08,743 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.c[399,412] [2025-04-29 10:52:08,748 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 10:52:08,759 INFO L204 MainTranslator]: Completed translation [2025-04-29 10:52:08,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08 WrapperNode [2025-04-29 10:52:08,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 10:52:08,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 10:52:08,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 10:52:08,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 10:52:08,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,779 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2025-04-29 10:52:08,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 10:52:08,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 10:52:08,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 10:52:08,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 10:52:08,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,795 INFO L175 MemorySlicer]: Split 2 memory accesses to 2 slices as follows [1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1]. The 0 writes are split as follows [0, 0]. [2025-04-29 10:52:08,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,798 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 10:52:08,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 10:52:08,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 10:52:08,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 10:52:08,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (1/1) ... [2025-04-29 10:52:08,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 10:52:08,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 10:52:08,829 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) [2025-04-29 10:52:08,830 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 [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 10:52:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 10:52:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 10:52:08,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 10:52:08,846 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 10:52:08,897 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 10:52:08,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 10:52:08,986 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 10:52:08,986 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 10:52:09,024 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 10:52:09,025 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 10:52:09,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 10:52:09 BoogieIcfgContainer [2025-04-29 10:52:09,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 10:52:09,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 10:52:09,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 10:52:09,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 10:52:09,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 10:52:08" (1/3) ... [2025-04-29 10:52:09,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf8afeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 10:52:09, skipping insertion in model container [2025-04-29 10:52:09,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:52:08" (2/3) ... [2025-04-29 10:52:09,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf8afeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 10:52:09, skipping insertion in model container [2025-04-29 10:52:09,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 10:52:09" (3/3) ... [2025-04-29 10:52:09,030 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_44-traces-mine2_true.c [2025-04-29 10:52:09,039 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 10:52:09,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_44-traces-mine2_true.c that has 2 procedures, 26 locations, 26 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-29 10:52:09,040 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 10:52:09,066 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 10:52:09,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 27 transitions, 58 flow [2025-04-29 10:52:09,114 INFO L116 PetriNetUnfolderBase]: 2/26 cut-off events. [2025-04-29 10:52:09,119 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 10:52:09,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 2/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-04-29 10:52:09,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 27 transitions, 58 flow [2025-04-29 10:52:09,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 23 transitions, 49 flow [2025-04-29 10:52:09,129 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 10:52:09,137 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;@5096dca2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 10:52:09,137 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-29 10:52:09,144 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 10:52:09,145 INFO L116 PetriNetUnfolderBase]: 1/12 cut-off events. [2025-04-29 10:52:09,145 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 10:52:09,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:52:09,145 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:52:09,145 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-29 10:52:09,149 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:52:09,150 INFO L85 PathProgramCache]: Analyzing trace with hash 538773978, now seen corresponding path program 1 times [2025-04-29 10:52:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:52:09,154 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279731432] [2025-04-29 10:52:09,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 10:52:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:52:09,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 10:52:09,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 10:52:09,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 10:52:09,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:52:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:52:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:52:09,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279731432] [2025-04-29 10:52:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279731432] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:52:09,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:52:09,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:52:09,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409268609] [2025-04-29 10:52:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:52:09,344 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 10:52:09,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:52:09,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 10:52:09,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 10:52:09,379 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-04-29 10:52:09,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2025-04-29 10:52:09,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:52:09,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-04-29 10:52:09,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:52:09,479 INFO L116 PetriNetUnfolderBase]: 73/183 cut-off events. [2025-04-29 10:52:09,479 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 10:52:09,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 183 events. 73/183 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 687 event pairs, 28 based on Foata normal form. 16/192 useless extension candidates. Maximal degree in co-relation 353. Up to 65 conditions per place. [2025-04-29 10:52:09,481 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 25 selfloop transitions, 8 changer transitions 5/41 dead transitions. [2025-04-29 10:52:09,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 41 transitions, 161 flow [2025-04-29 10:52:09,482 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 10:52:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-29 10:52:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-04-29 10:52:09,489 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2025-04-29 10:52:09,490 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 49 flow. Second operand 5 states and 64 transitions. [2025-04-29 10:52:09,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 41 transitions, 161 flow [2025-04-29 10:52:09,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 10:52:09,494 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2025-04-29 10:52:09,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2025-04-29 10:52:09,498 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-04-29 10:52:09,498 INFO L485 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2025-04-29 10:52:09,498 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2025-04-29 10:52:09,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:52:09,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:52:09,498 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 10:52:09,498 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-29 10:52:09,499 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:52:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1510744941, now seen corresponding path program 1 times [2025-04-29 10:52:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:52:09,499 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266015647] [2025-04-29 10:52:09,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 10:52:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:52:09,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 10:52:09,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 10:52:09,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 10:52:09,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:52:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:52:09,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:52:09,614 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266015647] [2025-04-29 10:52:09,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266015647] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:52:09,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:52:09,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:52:09,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204268385] [2025-04-29 10:52:09,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:52:09,616 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:52:09,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:52:09,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:52:09,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:52:09,616 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-04-29 10:52:09,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2025-04-29 10:52:09,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:52:09,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-04-29 10:52:09,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:52:09,674 INFO L116 PetriNetUnfolderBase]: 21/85 cut-off events. [2025-04-29 10:52:09,674 INFO L117 PetriNetUnfolderBase]: For 38/40 co-relation queries the response was YES. [2025-04-29 10:52:09,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 85 events. 21/85 cut-off events. For 38/40 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 257 event pairs, 4 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 216. Up to 42 conditions per place. [2025-04-29 10:52:09,675 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 4 changer transitions 9/32 dead transitions. [2025-04-29 10:52:09,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 172 flow [2025-04-29 10:52:09,676 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:52:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:52:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2025-04-29 10:52:09,676 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2025-04-29 10:52:09,676 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 3 states and 49 transitions. [2025-04-29 10:52:09,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 172 flow [2025-04-29 10:52:09,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 164 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-29 10:52:09,678 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 78 flow [2025-04-29 10:52:09,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2025-04-29 10:52:09,678 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2025-04-29 10:52:09,678 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 78 flow [2025-04-29 10:52:09,678 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2025-04-29 10:52:09,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:52:09,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:52:09,678 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 10:52:09,679 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-29 10:52:09,679 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:52:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2134122633, now seen corresponding path program 1 times [2025-04-29 10:52:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:52:09,679 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423724345] [2025-04-29 10:52:09,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 10:52:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:52:09,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 10:52:09,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 10:52:09,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 10:52:09,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:52:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:52:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:52:09,824 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423724345] [2025-04-29 10:52:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423724345] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:52:09,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:52:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 10:52:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763989836] [2025-04-29 10:52:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:52:09,824 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 10:52:09,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:52:09,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 10:52:09,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-29 10:52:09,825 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-04-29 10:52:09,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 10:52:09,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:52:09,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-04-29 10:52:09,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:52:09,843 INFO L116 PetriNetUnfolderBase]: 6/23 cut-off events. [2025-04-29 10:52:09,843 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-29 10:52:09,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 23 events. 6/23 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 2/25 useless extension candidates. Maximal degree in co-relation 62. Up to 19 conditions per place. [2025-04-29 10:52:09,843 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2025-04-29 10:52:09,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 66 flow [2025-04-29 10:52:09,843 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 10:52:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 10:52:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-04-29 10:52:09,844 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2025-04-29 10:52:09,844 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 78 flow. Second operand 4 states and 44 transitions. [2025-04-29 10:52:09,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 66 flow [2025-04-29 10:52:09,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-04-29 10:52:09,844 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2025-04-29 10:52:09,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2025-04-29 10:52:09,845 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -7 predicate places. [2025-04-29 10:52:09,845 INFO L485 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2025-04-29 10:52:09,845 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 10:52:09,846 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-29 10:52:09,847 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-29 10:52:09,847 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-29 10:52:09,847 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 10:52:09,847 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 10:52:09,849 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 10:52:09,849 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 10:52:09,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 10:52:09 BasicIcfg [2025-04-29 10:52:09,852 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 10:52:09,852 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 10:52:09,852 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 10:52:09,853 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 10:52:09,853 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 10:52:09" (3/4) ... [2025-04-29 10:52:09,855 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 10:52:09,857 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-04-29 10:52:09,860 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-04-29 10:52:09,860 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-29 10:52:09,860 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 10:52:09,906 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 10:52:09,906 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 10:52:09,906 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 10:52:09,906 INFO L158 Benchmark]: Toolchain (without parser) took 1311.35ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 74.0MB in the end (delta: 38.6MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2025-04-29 10:52:09,907 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 10:52:09,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.79ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 98.6MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 10:52:09,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.88ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 10:52:09,907 INFO L158 Benchmark]: Boogie Preprocessor took 24.02ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 96.1MB in the end (delta: 989.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 10:52:09,907 INFO L158 Benchmark]: RCFGBuilder took 219.92ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 79.5MB in the end (delta: 16.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 10:52:09,908 INFO L158 Benchmark]: TraceAbstraction took 825.86ms. Allocated memory is still 142.6MB. Free memory was 79.0MB in the beginning and 79.1MB in the end (delta: -174.9kB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2025-04-29 10:52:09,908 INFO L158 Benchmark]: Witness Printer took 53.65ms. Allocated memory is still 142.6MB. Free memory was 79.1MB in the beginning and 74.0MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 10:52:09,909 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.79ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 98.6MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.88ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.02ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 96.1MB in the end (delta: 989.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.92ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 79.5MB in the end (delta: 16.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 825.86ms. Allocated memory is still 142.6MB. Free memory was 79.0MB in the beginning and 79.1MB in the end (delta: -174.9kB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 53.65ms. Allocated memory is still 142.6MB. Free memory was 79.1MB in the beginning and 74.0MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 37 locations, 37 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: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 4 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=1, InterpolantAutomatonStates: 12, 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 10:52:09,923 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE