./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/dekker.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:46:44,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:46:44,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:46:44,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:46:44,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:46:44,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:46:44,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:46:44,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:46:44,312 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:46:44,312 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:46:44,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:46:44,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:46:44,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:46:44,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:46:44,314 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:46:44,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:46:44,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:46:44,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:46:44,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:46:44,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:46:44,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:46:44,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:46:44,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:46:44,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:46:44,320 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:46:44,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:46:44,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:46:44,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:46:44,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:46:44,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:46:44,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:46:44,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:46:44,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:46:44,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:46:44,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:46:44,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:46:44,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:46:44,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:46:44,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:46:44,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:46:44,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:46:44,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:46:44,325 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:46:44,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:46:44,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:46:44,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:46:44,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:46:44,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:46:44,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2023-11-22 23:46:45,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:46:45,757 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:46:45,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2023-11-22 23:46:45,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a4312da/34fce55a094e43ff81d0f14b81318102/FLAGb7f17bd9a [2023-11-22 23:46:45,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a4312da/34fce55a094e43ff81d0f14b81318102 [2023-11-22 23:46:45,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:46:45,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:46:45,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:46:45,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:46:45,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:46:45,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:46:45" (1/1) ... [2023-11-22 23:46:45,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd9324c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:45, skipping insertion in model container [2023-11-22 23:46:45,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:46:45" (1/1) ... [2023-11-22 23:46:45,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:46:45,968 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-22 23:46:46,047 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2023-11-22 23:46:46,056 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2023-11-22 23:46:46,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:46:46,075 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:46:46,097 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-22 23:46:46,116 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2023-11-22 23:46:46,118 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2023-11-22 23:46:46,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:46:46,147 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:46:46,147 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:46:46,147 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:46:46,153 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:46:46,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46 WrapperNode [2023-11-22 23:46:46,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:46:46,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:46:46,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:46:46,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:46:46,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,203 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2023-11-22 23:46:46,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:46:46,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:46:46,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:46:46,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:46:46,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:46:46,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:46:46,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:46:46,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:46:46,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (1/1) ... [2023-11-22 23:46:46,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:46:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:46:46,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:46:46,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:46:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 23:46:46,320 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-22 23:46:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-22 23:46:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:46:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:46:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 23:46:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:46:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:46:46,323 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 23:46:46,416 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:46:46,418 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:46:46,593 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:46:46,683 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:46:46,684 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-22 23:46:46,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:46:46 BoogieIcfgContainer [2023-11-22 23:46:46,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:46:46,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:46:46,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:46:46,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:46:46,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:46:45" (1/3) ... [2023-11-22 23:46:46,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c1726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:46:46, skipping insertion in model container [2023-11-22 23:46:46,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:46:46" (2/3) ... [2023-11-22 23:46:46,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c1726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:46:46, skipping insertion in model container [2023-11-22 23:46:46,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:46:46" (3/3) ... [2023-11-22 23:46:46,693 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2023-11-22 23:46:46,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-22 23:46:46,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:46:46,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-22 23:46:46,707 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 23:46:46,758 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-22 23:46:46,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 57 transitions, 128 flow [2023-11-22 23:46:46,808 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2023-11-22 23:46:46,809 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-22 23:46:46,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 55 events. 8/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-22 23:46:46,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 57 transitions, 128 flow [2023-11-22 23:46:46,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 53 transitions, 115 flow [2023-11-22 23:46:46,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:46:46,850 INFO L357 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, mHoare=true, 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;@41c11a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:46:46,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-22 23:46:46,857 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 23:46:46,857 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-11-22 23:46:46,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 23:46:46,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 23:46:46,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:46:46,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-22 23:46:46,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:46:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash -132943270, now seen corresponding path program 1 times [2023-11-22 23:46:46,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:46:46,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891756278] [2023-11-22 23:46:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:46:46,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:46:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:46:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:46:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:46:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891756278] [2023-11-22 23:46:47,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891756278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:46:47,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:46:47,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:46:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234003693] [2023-11-22 23:46:47,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:46:47,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:46:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:46:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:46:47,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:46:47,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 57 [2023-11-22 23:46:47,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:46:47,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 23:46:47,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 57 [2023-11-22 23:46:47,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 23:46:47,302 INFO L124 PetriNetUnfolderBase]: 101/311 cut-off events. [2023-11-22 23:46:47,303 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-22 23:46:47,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 311 events. 101/311 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1756 event pairs, 35 based on Foata normal form. 42/312 useless extension candidates. Maximal degree in co-relation 420. Up to 86 conditions per place. [2023-11-22 23:46:47,307 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 18 selfloop transitions, 3 changer transitions 1/58 dead transitions. [2023-11-22 23:46:47,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 172 flow [2023-11-22 23:46:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:46:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 23:46:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-22 23:46:47,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2023-11-22 23:46:47,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-22 23:46:47,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-22 23:46:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 23:46:47,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-22 23:46:47,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-22 23:46:47,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-22 23:46:47,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-22 23:46:47,328 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 115 flow. Second operand 3 states and 141 transitions. [2023-11-22 23:46:47,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 172 flow [2023-11-22 23:46:47,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 165 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-22 23:46:47,335 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 126 flow [2023-11-22 23:46:47,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-11-22 23:46:47,340 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-11-22 23:46:47,340 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 126 flow [2023-11-22 23:46:47,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 23:46:47,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 23:46:47,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:46:47,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:46:47,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-22 23:46:47,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:46:47,343 INFO L85 PathProgramCache]: Analyzing trace with hash -895869348, now seen corresponding path program 1 times [2023-11-22 23:46:47,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:46:47,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396812448] [2023-11-22 23:46:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:46:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:46:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:46:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:46:47,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:46:47,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396812448] [2023-11-22 23:46:47,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396812448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:46:47,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:46:47,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:46:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763628638] [2023-11-22 23:46:47,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:46:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:46:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:46:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:46:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:46:47,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 57 [2023-11-22 23:46:47,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-22 23:46:47,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 23:46:47,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 57 [2023-11-22 23:46:47,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 23:46:47,471 INFO L124 PetriNetUnfolderBase]: 89/298 cut-off events. [2023-11-22 23:46:47,480 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-22 23:46:47,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 298 events. 89/298 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1763 event pairs, 47 based on Foata normal form. 16/287 useless extension candidates. Maximal degree in co-relation 233. Up to 121 conditions per place. [2023-11-22 23:46:47,485 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 16 selfloop transitions, 2 changer transitions 4/58 dead transitions. [2023-11-22 23:46:47,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 183 flow [2023-11-22 23:46:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:46:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 23:46:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-22 23:46:47,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8070175438596491 [2023-11-22 23:46:47,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-22 23:46:47,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-22 23:46:47,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 23:46:47,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-22 23:46:47,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-11-22 23:46:47,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-22 23:46:47,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-22 23:46:47,493 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 126 flow. Second operand 3 states and 138 transitions. [2023-11-22 23:46:47,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 183 flow [2023-11-22 23:46:47,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 23:46:47,496 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 130 flow [2023-11-22 23:46:47,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-22 23:46:47,497 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-22 23:46:47,498 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 130 flow [2023-11-22 23:46:47,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-22 23:46:47,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 23:46:47,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:46:47,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:46:47,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-22 23:46:47,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:46:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1189588865, now seen corresponding path program 1 times [2023-11-22 23:46:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:46:47,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461271115] [2023-11-22 23:46:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:46:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:46:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:46:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:46:47,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:46:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461271115] [2023-11-22 23:46:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461271115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:46:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:46:47,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:46:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647100536] [2023-11-22 23:46:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:46:47,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:46:47,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:46:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:46:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:46:47,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2023-11-22 23:46:47,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2023-11-22 23:46:47,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 23:46:47,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2023-11-22 23:46:47,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 23:46:47,731 INFO L124 PetriNetUnfolderBase]: 287/754 cut-off events. [2023-11-22 23:46:47,732 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-22 23:46:47,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 754 events. 287/754 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4815 event pairs, 77 based on Foata normal form. 16/707 useless extension candidates. Maximal degree in co-relation 959. Up to 225 conditions per place. [2023-11-22 23:46:47,737 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 29 selfloop transitions, 9 changer transitions 4/74 dead transitions. [2023-11-22 23:46:47,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 268 flow [2023-11-22 23:46:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:46:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-22 23:46:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 213 transitions. [2023-11-22 23:46:47,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7473684210526316 [2023-11-22 23:46:47,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 213 transitions. [2023-11-22 23:46:47,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 213 transitions. [2023-11-22 23:46:47,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 23:46:47,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 213 transitions. [2023-11-22 23:46:47,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 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) [2023-11-22 23:46:47,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 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) [2023-11-22 23:46:47,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 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) [2023-11-22 23:46:47,741 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 130 flow. Second operand 5 states and 213 transitions. [2023-11-22 23:46:47,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 268 flow [2023-11-22 23:46:47,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-22 23:46:47,745 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 179 flow [2023-11-22 23:46:47,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-22 23:46:47,746 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-11-22 23:46:47,746 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 179 flow [2023-11-22 23:46:47,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2023-11-22 23:46:47,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 23:46:47,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:46:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:46:47,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-22 23:46:47,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:46:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1500189543, now seen corresponding path program 2 times [2023-11-22 23:46:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:46:47,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262627653] [2023-11-22 23:46:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:46:47,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:46:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:46:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:46:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:46:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262627653] [2023-11-22 23:46:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262627653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:46:47,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:46:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:46:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607586143] [2023-11-22 23:46:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:46:47,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:46:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:46:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:46:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:46:47,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2023-11-22 23:46:47,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2023-11-22 23:46:47,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 23:46:47,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2023-11-22 23:46:47,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 23:46:47,929 INFO L124 PetriNetUnfolderBase]: 426/1046 cut-off events. [2023-11-22 23:46:47,930 INFO L125 PetriNetUnfolderBase]: For 345/347 co-relation queries the response was YES. [2023-11-22 23:46:47,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 1046 events. 426/1046 cut-off events. For 345/347 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7414 event pairs, 131 based on Foata normal form. 28/1012 useless extension candidates. Maximal degree in co-relation 1258. Up to 271 conditions per place. [2023-11-22 23:46:47,935 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2023-11-22 23:46:47,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 298 flow [2023-11-22 23:46:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:46:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-22 23:46:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2023-11-22 23:46:47,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7403508771929824 [2023-11-22 23:46:47,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 211 transitions. [2023-11-22 23:46:47,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 211 transitions. [2023-11-22 23:46:47,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 23:46:47,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 211 transitions. [2023-11-22 23:46:47,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2023-11-22 23:46:47,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 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) [2023-11-22 23:46:47,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 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) [2023-11-22 23:46:47,941 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 179 flow. Second operand 5 states and 211 transitions. [2023-11-22 23:46:47,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 298 flow [2023-11-22 23:46:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 294 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-22 23:46:47,947 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-11-22 23:46:47,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-11-22 23:46:47,948 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-11-22 23:46:47,948 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-11-22 23:46:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2023-11-22 23:46:47,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-22 23:46:47,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-22 23:46:47,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-22 23:46:47,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-22 23:46:47,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-22 23:46:47,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-22 23:46:47,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:46:47,953 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-22 23:46:47,958 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-22 23:46:47,958 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 23:46:47,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:46:47 BasicIcfg [2023-11-22 23:46:47,963 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 23:46:47,964 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 23:46:47,964 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 23:46:47,965 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 23:46:47,966 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:46:46" (3/4) ... [2023-11-22 23:46:47,968 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 23:46:47,970 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-11-22 23:46:47,971 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-11-22 23:46:47,976 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2023-11-22 23:46:47,977 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-22 23:46:47,977 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-22 23:46:47,977 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-22 23:46:48,049 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 23:46:48,051 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 23:46:48,055 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 23:46:48,056 INFO L158 Benchmark]: Toolchain (without parser) took 2275.49ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 79.8MB in the beginning and 94.9MB in the end (delta: -15.1MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-11-22 23:46:48,056 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 151.0MB. Free memory was 112.0MB in the beginning and 111.9MB in the end (delta: 88.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 23:46:48,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.53ms. Allocated memory is still 151.0MB. Free memory was 79.6MB in the beginning and 105.9MB in the end (delta: -26.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2023-11-22 23:46:48,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.70ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 104.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 23:46:48,058 INFO L158 Benchmark]: Boogie Preprocessor took 36.99ms. Allocated memory is still 151.0MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 23:46:48,058 INFO L158 Benchmark]: RCFGBuilder took 443.35ms. Allocated memory is still 151.0MB. Free memory was 102.4MB in the beginning and 80.2MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-22 23:46:48,058 INFO L158 Benchmark]: TraceAbstraction took 1277.61ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 79.9MB in the beginning and 99.1MB in the end (delta: -19.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-11-22 23:46:48,059 INFO L158 Benchmark]: Witness Printer took 91.08ms. Allocated memory is still 186.6MB. Free memory was 99.1MB in the beginning and 94.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 23:46:48,060 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 151.0MB. Free memory was 112.0MB in the beginning and 111.9MB in the end (delta: 88.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.53ms. Allocated memory is still 151.0MB. Free memory was 79.6MB in the beginning and 105.9MB in the end (delta: -26.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.70ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 104.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.99ms. Allocated memory is still 151.0MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 443.35ms. Allocated memory is still 151.0MB. Free memory was 102.4MB in the beginning and 80.2MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1277.61ms. Allocated memory was 151.0MB in the beginning and 186.6MB in the end (delta: 35.7MB). Free memory was 79.9MB in the beginning and 99.1MB in the end (delta: -19.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Witness Printer took 91.08ms. Allocated memory is still 186.6MB. Free memory was 99.1MB in the beginning and 94.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 780]: 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: 739]: 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 5 procedures, 92 locations, 6 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: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 216 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 12 mSDtfsCounter, 216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-22 23:46:48,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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