./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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-wmm/safe004_tso.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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:10:14,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:10:14,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:10:14,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:10:14,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:10:14,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:10:14,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:10:14,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:10:14,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:10:14,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:10:14,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:10:14,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:10:14,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:10:14,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:10:14,396 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:10:14,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:10:14,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:10:14,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:10:14,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:10:14,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:10:14,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:10:14,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:10:14,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:10:14,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:10:14,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:10:14,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:10:14,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:10:14,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:10:14,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:10:14,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:10:14,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:10:14,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:10:14,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:14,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:10:14,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:10:14,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:10:14,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:10:14,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:10:14,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:10:14,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:10:14,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:10:14,412 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:10:14,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:10:14,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2024-01-27 15:10:14,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:10:14,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:10:14,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:10:14,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:10:14,736 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:10:14,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2024-01-27 15:10:15,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:10:15,974 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:10:15,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2024-01-27 15:10:15,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1feb0582a/aec668f1fc09404da95744c34d23a32b/FLAG9b3d1389b [2024-01-27 15:10:16,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1feb0582a/aec668f1fc09404da95744c34d23a32b [2024-01-27 15:10:16,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:10:16,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:10:16,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:16,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:10:16,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:10:16,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4868a559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16, skipping insertion in model container [2024-01-27 15:10:16,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,050 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:10:16,244 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2024-01-27 15:10:16,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:16,401 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:10:16,412 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2024-01-27 15:10:16,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:16,472 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:10:16,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16 WrapperNode [2024-01-27 15:10:16,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:16,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:16,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:10:16,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:10:16,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,520 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-01-27 15:10:16,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:16,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:10:16,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:10:16,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:10:16,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,557 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:10:16,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:10:16,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:10:16,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:10:16,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:10:16,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (1/1) ... [2024-01-27 15:10:16,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:16,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:10:16,611 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) [2024-01-27 15:10:16,632 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 [2024-01-27 15:10:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:10:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:10:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:10:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:10:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:10:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:10:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:10:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:10:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 15:10:16,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 15:10:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 15:10:16,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 15:10:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 15:10:16,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 15:10:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:10:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:10:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:10:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:10:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:10:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:10:16,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:10:16,655 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:10:16,751 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:10:16,753 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:10:16,872 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:10:16,872 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:10:16,959 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:10:16,959 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:10:16,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:16 BoogieIcfgContainer [2024-01-27 15:10:16,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:10:16,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:10:16,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:10:16,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:10:16,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:10:16" (1/3) ... [2024-01-27 15:10:16,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d282d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:16, skipping insertion in model container [2024-01-27 15:10:16,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:16" (2/3) ... [2024-01-27 15:10:16,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d282d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:16, skipping insertion in model container [2024-01-27 15:10:16,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:16" (3/3) ... [2024-01-27 15:10:16,971 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2024-01-27 15:10:16,977 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:10:16,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:10:16,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:10:16,984 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:10:17,027 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:10:17,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-01-27 15:10:17,068 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-01-27 15:10:17,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:17,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-01-27 15:10:17,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-01-27 15:10:17,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-01-27 15:10:17,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:10:17,085 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;@16388b9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:10:17,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:10:17,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:10:17,104 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-27 15:10:17,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:17,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:17,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:17,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:17,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 156984467, now seen corresponding path program 1 times [2024-01-27 15:10:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266745354] [2024-01-27 15:10:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:17,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:17,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266745354] [2024-01-27 15:10:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266745354] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:17,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210013563] [2024-01-27 15:10:17,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:17,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:17,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 15:10:17,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-01-27 15:10:17,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:17,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 15:10:17,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:17,981 INFO L124 PetriNetUnfolderBase]: 1492/2692 cut-off events. [2024-01-27 15:10:17,981 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-27 15:10:17,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 2692 events. 1492/2692 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17951 event pairs, 434 based on Foata normal form. 89/2715 useless extension candidates. Maximal degree in co-relation 4977. Up to 1211 conditions per place. [2024-01-27 15:10:17,999 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 30 selfloop transitions, 7 changer transitions 39/88 dead transitions. [2024-01-27 15:10:17,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 88 transitions, 343 flow [2024-01-27 15:10:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:18,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-01-27 15:10:18,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879699248120301 [2024-01-27 15:10:18,014 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 183 transitions. [2024-01-27 15:10:18,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 88 transitions, 343 flow [2024-01-27 15:10:18,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:10:18,023 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 156 flow [2024-01-27 15:10:18,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-01-27 15:10:18,029 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-01-27 15:10:18,029 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 156 flow [2024-01-27 15:10:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-01-27 15:10:18,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:18,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:18,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:10:18,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:18,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1254900110, now seen corresponding path program 1 times [2024-01-27 15:10:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:18,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532350010] [2024-01-27 15:10:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:18,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532350010] [2024-01-27 15:10:18,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532350010] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:18,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139675232] [2024-01-27 15:10:18,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:18,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:18,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:18,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:18,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 15:10:18,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-01-27 15:10:18,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:18,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 15:10:18,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:18,525 INFO L124 PetriNetUnfolderBase]: 1230/2321 cut-off events. [2024-01-27 15:10:18,525 INFO L125 PetriNetUnfolderBase]: For 3172/3180 co-relation queries the response was YES. [2024-01-27 15:10:18,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 2321 events. 1230/2321 cut-off events. For 3172/3180 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15544 event pairs, 137 based on Foata normal form. 68/2382 useless extension candidates. Maximal degree in co-relation 7045. Up to 1085 conditions per place. [2024-01-27 15:10:18,537 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 39 selfloop transitions, 11 changer transitions 48/110 dead transitions. [2024-01-27 15:10:18,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 110 transitions, 718 flow [2024-01-27 15:10:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:10:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:10:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-01-27 15:10:18,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6342105263157894 [2024-01-27 15:10:18,542 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 156 flow. Second operand 10 states and 241 transitions. [2024-01-27 15:10:18,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 110 transitions, 718 flow [2024-01-27 15:10:18,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 110 transitions, 652 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:18,555 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 246 flow [2024-01-27 15:10:18,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-01-27 15:10:18,556 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-01-27 15:10:18,556 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 246 flow [2024-01-27 15:10:18,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-01-27 15:10:18,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:18,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:10:18,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:18,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -53070414, now seen corresponding path program 1 times [2024-01-27 15:10:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037146446] [2024-01-27 15:10:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:18,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:18,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037146446] [2024-01-27 15:10:18,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037146446] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:18,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:18,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:18,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963282092] [2024-01-27 15:10:18,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:18,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:18,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 15:10:18,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-01-27 15:10:18,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:18,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 15:10:18,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:18,926 INFO L124 PetriNetUnfolderBase]: 990/1877 cut-off events. [2024-01-27 15:10:18,926 INFO L125 PetriNetUnfolderBase]: For 6143/6153 co-relation queries the response was YES. [2024-01-27 15:10:18,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6616 conditions, 1877 events. 990/1877 cut-off events. For 6143/6153 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11990 event pairs, 217 based on Foata normal form. 65/1917 useless extension candidates. Maximal degree in co-relation 6591. Up to 564 conditions per place. [2024-01-27 15:10:18,936 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 38 selfloop transitions, 11 changer transitions 54/115 dead transitions. [2024-01-27 15:10:18,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 115 transitions, 934 flow [2024-01-27 15:10:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:10:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:10:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-01-27 15:10:18,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-01-27 15:10:18,938 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 246 flow. Second operand 10 states and 230 transitions. [2024-01-27 15:10:18,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 115 transitions, 934 flow [2024-01-27 15:10:18,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 860 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-01-27 15:10:18,951 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 324 flow [2024-01-27 15:10:18,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-01-27 15:10:18,951 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-01-27 15:10:18,952 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 324 flow [2024-01-27 15:10:18,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-01-27 15:10:18,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:18,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:18,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:10:18,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:18,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1065501875, now seen corresponding path program 1 times [2024-01-27 15:10:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:18,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773308847] [2024-01-27 15:10:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:18,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:19,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:19,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773308847] [2024-01-27 15:10:19,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773308847] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:19,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:19,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670784232] [2024-01-27 15:10:19,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:19,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:10:19,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:10:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:10:19,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 15:10:19,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-01-27 15:10:19,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:19,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 15:10:19,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:19,277 INFO L124 PetriNetUnfolderBase]: 938/1863 cut-off events. [2024-01-27 15:10:19,277 INFO L125 PetriNetUnfolderBase]: For 5694/5694 co-relation queries the response was YES. [2024-01-27 15:10:19,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6598 conditions, 1863 events. 938/1863 cut-off events. For 5694/5694 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12690 event pairs, 143 based on Foata normal form. 32/1851 useless extension candidates. Maximal degree in co-relation 6567. Up to 593 conditions per place. [2024-01-27 15:10:19,321 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 36 selfloop transitions, 10 changer transitions 56/114 dead transitions. [2024-01-27 15:10:19,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 114 transitions, 1030 flow [2024-01-27 15:10:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:10:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:10:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-01-27 15:10:19,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169590643274854 [2024-01-27 15:10:19,323 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 324 flow. Second operand 9 states and 211 transitions. [2024-01-27 15:10:19,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 114 transitions, 1030 flow [2024-01-27 15:10:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 976 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-01-27 15:10:19,333 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 288 flow [2024-01-27 15:10:19,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2024-01-27 15:10:19,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-01-27 15:10:19,334 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 288 flow [2024-01-27 15:10:19,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-01-27 15:10:19,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:19,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:10:19,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:19,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1548340272, now seen corresponding path program 1 times [2024-01-27 15:10:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:19,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268244622] [2024-01-27 15:10:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:19,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268244622] [2024-01-27 15:10:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268244622] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:19,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:19,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 15:10:19,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759770490] [2024-01-27 15:10:19,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:10:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:10:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:10:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 15:10:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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) [2024-01-27 15:10:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 15:10:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:19,727 INFO L124 PetriNetUnfolderBase]: 384/844 cut-off events. [2024-01-27 15:10:19,728 INFO L125 PetriNetUnfolderBase]: For 2906/2906 co-relation queries the response was YES. [2024-01-27 15:10:19,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 844 events. 384/844 cut-off events. For 2906/2906 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5207 event pairs, 50 based on Foata normal form. 22/852 useless extension candidates. Maximal degree in co-relation 2825. Up to 156 conditions per place. [2024-01-27 15:10:19,747 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 27 selfloop transitions, 5 changer transitions 52/96 dead transitions. [2024-01-27 15:10:19,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 734 flow [2024-01-27 15:10:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:10:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:10:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 244 transitions. [2024-01-27 15:10:19,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583732057416268 [2024-01-27 15:10:19,748 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 288 flow. Second operand 11 states and 244 transitions. [2024-01-27 15:10:19,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 734 flow [2024-01-27 15:10:19,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 615 flow, removed 33 selfloop flow, removed 13 redundant places. [2024-01-27 15:10:19,754 INFO L231 Difference]: Finished difference. Result has 72 places, 32 transitions, 162 flow [2024-01-27 15:10:19,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=162, PETRI_PLACES=72, PETRI_TRANSITIONS=32} [2024-01-27 15:10:19,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-01-27 15:10:19,754 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 32 transitions, 162 flow [2024-01-27 15:10:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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) [2024-01-27 15:10:19,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:19,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:19,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:10:19,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:19,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash -70844462, now seen corresponding path program 1 times [2024-01-27 15:10:19,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277320221] [2024-01-27 15:10:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277320221] [2024-01-27 15:10:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277320221] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:19,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:10:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299028326] [2024-01-27 15:10:19,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:10:19,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:10:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:10:19,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-01-27 15:10:19,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 32 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-01-27 15:10:19,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-01-27 15:10:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:19,917 INFO L124 PetriNetUnfolderBase]: 282/574 cut-off events. [2024-01-27 15:10:19,917 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-01-27 15:10:19,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 574 events. 282/574 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3078 event pairs, 70 based on Foata normal form. 27/570 useless extension candidates. Maximal degree in co-relation 1287. Up to 261 conditions per place. [2024-01-27 15:10:19,920 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 21 selfloop transitions, 4 changer transitions 4/45 dead transitions. [2024-01-27 15:10:19,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 45 transitions, 248 flow [2024-01-27 15:10:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:10:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:10:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-01-27 15:10:19,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7302631578947368 [2024-01-27 15:10:19,921 INFO L175 Difference]: Start difference. First operand has 72 places, 32 transitions, 162 flow. Second operand 4 states and 111 transitions. [2024-01-27 15:10:19,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 45 transitions, 248 flow [2024-01-27 15:10:19,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 177 flow, removed 16 selfloop flow, removed 21 redundant places. [2024-01-27 15:10:19,924 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 119 flow [2024-01-27 15:10:19,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-01-27 15:10:19,925 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-01-27 15:10:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 119 flow [2024-01-27 15:10:19,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-01-27 15:10:19,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:19,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:10:19,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:19,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1217962161, now seen corresponding path program 1 times [2024-01-27 15:10:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473568570] [2024-01-27 15:10:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:19,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:19,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473568570] [2024-01-27 15:10:19,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473568570] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:19,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228503485] [2024-01-27 15:10:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:19,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:19,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-01-27 15:10:19,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-01-27 15:10:19,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:19,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-01-27 15:10:19,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:20,045 INFO L124 PetriNetUnfolderBase]: 202/413 cut-off events. [2024-01-27 15:10:20,045 INFO L125 PetriNetUnfolderBase]: For 151/207 co-relation queries the response was YES. [2024-01-27 15:10:20,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 413 events. 202/413 cut-off events. For 151/207 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1850 event pairs, 22 based on Foata normal form. 27/420 useless extension candidates. Maximal degree in co-relation 978. Up to 161 conditions per place. [2024-01-27 15:10:20,047 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 20 selfloop transitions, 6 changer transitions 8/50 dead transitions. [2024-01-27 15:10:20,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 236 flow [2024-01-27 15:10:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:10:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:10:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-27 15:10:20,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2024-01-27 15:10:20,048 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 119 flow. Second operand 5 states and 136 transitions. [2024-01-27 15:10:20,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 236 flow [2024-01-27 15:10:20,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 223 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 15:10:20,050 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 133 flow [2024-01-27 15:10:20,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-01-27 15:10:20,050 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-01-27 15:10:20,050 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 133 flow [2024-01-27 15:10:20,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-01-27 15:10:20,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:20,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:10:20,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:20,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash 137584206, now seen corresponding path program 1 times [2024-01-27 15:10:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803189528] [2024-01-27 15:10:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:10:20,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803189528] [2024-01-27 15:10:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803189528] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:20,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:20,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123211687] [2024-01-27 15:10:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:20,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:20,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-01-27 15:10:20,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-01-27 15:10:20,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:20,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-01-27 15:10:20,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:20,171 INFO L124 PetriNetUnfolderBase]: 80/171 cut-off events. [2024-01-27 15:10:20,171 INFO L125 PetriNetUnfolderBase]: For 178/230 co-relation queries the response was YES. [2024-01-27 15:10:20,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 171 events. 80/171 cut-off events. For 178/230 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 492 event pairs, 2 based on Foata normal form. 16/180 useless extension candidates. Maximal degree in co-relation 447. Up to 56 conditions per place. [2024-01-27 15:10:20,172 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-01-27 15:10:20,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 215 flow [2024-01-27 15:10:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:10:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:10:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-01-27 15:10:20,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-27 15:10:20,173 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 133 flow. Second operand 6 states and 152 transitions. [2024-01-27 15:10:20,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 215 flow [2024-01-27 15:10:20,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 190 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-27 15:10:20,174 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-01-27 15:10:20,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-01-27 15:10:20,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-01-27 15:10:20,175 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-01-27 15:10:20,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-01-27 15:10:20,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:10:20,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:10:20,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:10:20,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:10:20,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:10:20,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:20,181 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:10:20,181 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:10:20,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:10:20 BasicIcfg [2024-01-27 15:10:20,185 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:10:20,185 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:10:20,185 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:10:20,185 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:10:20,186 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:16" (3/4) ... [2024-01-27 15:10:20,187 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:10:20,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-01-27 15:10:20,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-01-27 15:10:20,190 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-01-27 15:10:20,192 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-01-27 15:10:20,192 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-01-27 15:10:20,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-01-27 15:10:20,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-01-27 15:10:20,251 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:10:20,251 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:10:20,251 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:10:20,252 INFO L158 Benchmark]: Toolchain (without parser) took 4245.65ms. Allocated memory was 144.7MB in the beginning and 253.8MB in the end (delta: 109.1MB). Free memory was 74.8MB in the beginning and 88.0MB in the end (delta: -13.2MB). Peak memory consumption was 96.9MB. Max. memory is 16.1GB. [2024-01-27 15:10:20,252 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 144.7MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:10:20,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.56ms. Allocated memory is still 144.7MB. Free memory was 74.6MB in the beginning and 102.3MB in the end (delta: -27.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-27 15:10:20,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.80ms. Allocated memory is still 144.7MB. Free memory was 102.3MB in the beginning and 100.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:10:20,253 INFO L158 Benchmark]: Boogie Preprocessor took 58.91ms. Allocated memory is still 144.7MB. Free memory was 100.2MB in the beginning and 98.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:10:20,253 INFO L158 Benchmark]: RCFGBuilder took 378.48ms. Allocated memory is still 144.7MB. Free memory was 98.1MB in the beginning and 76.1MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:20,253 INFO L158 Benchmark]: TraceAbstraction took 3223.79ms. Allocated memory was 144.7MB in the beginning and 253.8MB in the end (delta: 109.1MB). Free memory was 75.6MB in the beginning and 92.2MB in the end (delta: -16.6MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. [2024-01-27 15:10:20,254 INFO L158 Benchmark]: Witness Printer took 66.24ms. Allocated memory is still 253.8MB. Free memory was 92.2MB in the beginning and 88.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:20,255 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 144.7MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.56ms. Allocated memory is still 144.7MB. Free memory was 74.6MB in the beginning and 102.3MB in the end (delta: -27.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.80ms. Allocated memory is still 144.7MB. Free memory was 102.3MB in the beginning and 100.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.91ms. Allocated memory is still 144.7MB. Free memory was 100.2MB in the beginning and 98.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.48ms. Allocated memory is still 144.7MB. Free memory was 98.1MB in the beginning and 76.1MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3223.79ms. Allocated memory was 144.7MB in the beginning and 253.8MB in the end (delta: 109.1MB). Free memory was 75.6MB in the beginning and 92.2MB in the end (delta: -16.6MB). Peak memory consumption was 94.0MB. Max. memory is 16.1GB. * Witness Printer took 66.24ms. Allocated memory is still 253.8MB. Free memory was 92.2MB in the beginning and 88.0MB 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: 18]: 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 7 procedures, 62 locations, 4 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 394 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 274 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 724 IncrementalHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 84 mSDtfsCounter, 724 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=3, InterpolantAutomatonStates: 62, 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, 0.9s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:10:20,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE