./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_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/safe002_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 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:10:09,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:10:09,904 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:10:09,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:10:09,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:10:09,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:10:09,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:10:09,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:10:09,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:10:09,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:10:09,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:10:09,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:10:09,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:10:09,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:10:09,943 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:10:09,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:10:09,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:10:09,944 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:10:09,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:10:09,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:10:09,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:10:09,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:10:09,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:10:09,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:10:09,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:10:09,946 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:10:09,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:10:09,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:10:09,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:10:09,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:10:09,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:10:09,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:10:09,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:09,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:10:09,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:10:09,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:10:09,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:10:09,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:10:09,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:10:09,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:10:09,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:10:09,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:10:09,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:10:09,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 [2024-01-27 15:10:10,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:10:10,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:10:10,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:10:10,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:10:10,180 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:10:10,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2024-01-27 15:10:11,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:10:11,429 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:10:11,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2024-01-27 15:10:11,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5934438a/f055d26bfd2f4668ac7292e5b9873edb/FLAGcf295c2f2 [2024-01-27 15:10:11,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5934438a/f055d26bfd2f4668ac7292e5b9873edb [2024-01-27 15:10:11,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:10:11,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:10:11,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:11,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:10:11,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:10:11,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41eaefa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11, skipping insertion in model container [2024-01-27 15:10:11,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:10:11,628 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/safe002_tso.i[945,958] [2024-01-27 15:10:11,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:11,789 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:10:11,802 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/safe002_tso.i[945,958] [2024-01-27 15:10:11,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:11,876 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:10:11,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11 WrapperNode [2024-01-27 15:10:11,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:11,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:11,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:10:11,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:10:11,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,931 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-01-27 15:10:11,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:11,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:10:11,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:10:11,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:10:11,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,974 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 15:10:11,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:11,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:10:11,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:10:11,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:10:11,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:10:11,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (1/1) ... [2024-01-27 15:10:12,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:12,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:10:12,021 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 15:10:12,037 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 15:10:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:10:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:10:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:10:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:10:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 15:10:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 15:10:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 15:10:12,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:10:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:10:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:10:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:10:12,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:10:12,060 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 15:10:12,173 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:10:12,175 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:10:12,286 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:10:12,287 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:10:12,365 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:10:12,366 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:10:12,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:12 BoogieIcfgContainer [2024-01-27 15:10:12,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:10:12,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:10:12,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:10:12,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:10:12,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:10:11" (1/3) ... [2024-01-27 15:10:12,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:12, skipping insertion in model container [2024-01-27 15:10:12,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:11" (2/3) ... [2024-01-27 15:10:12,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4a587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:12, skipping insertion in model container [2024-01-27 15:10:12,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:12" (3/3) ... [2024-01-27 15:10:12,373 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2024-01-27 15:10:12,379 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:10:12,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:10:12,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:10:12,386 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:10:12,415 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:10:12,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-01-27 15:10:12,472 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-01-27 15:10:12,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:12,475 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 59 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 15:10:12,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-01-27 15:10:12,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-01-27 15:10:12,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:10:12,494 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;@5ad0067c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:10:12,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:10:12,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:10:12,506 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-27 15:10:12,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:12,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:12,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:12,507 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 15:10:12,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 899251850, now seen corresponding path program 1 times [2024-01-27 15:10:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:12,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959786625] [2024-01-27 15:10:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:12,993 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 15:10:12,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959786625] [2024-01-27 15:10:12,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959786625] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:12,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:12,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964493128] [2024-01-27 15:10:12,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:13,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:13,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-01-27 15:10:13,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 15:10:13,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:13,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-01-27 15:10:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:13,414 INFO L124 PetriNetUnfolderBase]: 1183/2234 cut-off events. [2024-01-27 15:10:13,414 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-27 15:10:13,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2234 events. 1183/2234 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15629 event pairs, 374 based on Foata normal form. 79/2291 useless extension candidates. Maximal degree in co-relation 4116. Up to 818 conditions per place. [2024-01-27 15:10:13,429 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 29 selfloop transitions, 6 changer transitions 35/83 dead transitions. [2024-01-27 15:10:13,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 321 flow [2024-01-27 15:10:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-01-27 15:10:13,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-01-27 15:10:13,443 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 184 transitions. [2024-01-27 15:10:13,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 321 flow [2024-01-27 15:10:13,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:10:13,450 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2024-01-27 15:10:13,452 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=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-01-27 15:10:13,454 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-01-27 15:10:13,455 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2024-01-27 15:10:13,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 15:10:13,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:13,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:10:13,456 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 15:10:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1886466635, now seen corresponding path program 1 times [2024-01-27 15:10:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080182889] [2024-01-27 15:10:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:13,668 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 15:10:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080182889] [2024-01-27 15:10:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080182889] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:13,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298886367] [2024-01-27 15:10:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:13,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:13,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-01-27 15:10:13,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 15:10:13,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:13,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-01-27 15:10:13,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:14,004 INFO L124 PetriNetUnfolderBase]: 976/1989 cut-off events. [2024-01-27 15:10:14,004 INFO L125 PetriNetUnfolderBase]: For 2099/2105 co-relation queries the response was YES. [2024-01-27 15:10:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 1989 events. 976/1989 cut-off events. For 2099/2105 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14036 event pairs, 92 based on Foata normal form. 60/2032 useless extension candidates. Maximal degree in co-relation 5400. Up to 704 conditions per place. [2024-01-27 15:10:14,014 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 36 selfloop transitions, 10 changer transitions 46/105 dead transitions. [2024-01-27 15:10:14,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 105 transitions, 664 flow [2024-01-27 15:10:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:10:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:10:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-01-27 15:10:14,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-01-27 15:10:14,019 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 245 transitions. [2024-01-27 15:10:14,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 105 transitions, 664 flow [2024-01-27 15:10:14,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 105 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:14,029 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 234 flow [2024-01-27 15:10:14,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=234, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2024-01-27 15:10:14,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-01-27 15:10:14,030 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 234 flow [2024-01-27 15:10:14,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 15:10:14,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:14,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:14,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:10:14,034 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 15:10:14,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:14,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1376973029, now seen corresponding path program 1 times [2024-01-27 15:10:14,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:14,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679047210] [2024-01-27 15:10:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:14,168 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 15:10:14,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679047210] [2024-01-27 15:10:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679047210] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:14,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667164605] [2024-01-27 15:10:14,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:14,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:14,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:14,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-01-27 15:10:14,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 15:10:14,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:14,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-01-27 15:10:14,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:14,425 INFO L124 PetriNetUnfolderBase]: 846/1664 cut-off events. [2024-01-27 15:10:14,426 INFO L125 PetriNetUnfolderBase]: For 4527/4539 co-relation queries the response was YES. [2024-01-27 15:10:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5462 conditions, 1664 events. 846/1664 cut-off events. For 4527/4539 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10991 event pairs, 216 based on Foata normal form. 42/1696 useless extension candidates. Maximal degree in co-relation 5437. Up to 662 conditions per place. [2024-01-27 15:10:14,436 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 40 selfloop transitions, 12 changer transitions 32/97 dead transitions. [2024-01-27 15:10:14,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 676 flow [2024-01-27 15:10:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:10:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:10:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-01-27 15:10:14,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2024-01-27 15:10:14,437 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 234 flow. Second operand 10 states and 236 transitions. [2024-01-27 15:10:14,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 676 flow [2024-01-27 15:10:14,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 610 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:14,450 INFO L231 Difference]: Finished difference. Result has 73 places, 46 transitions, 308 flow [2024-01-27 15:10:14,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=308, PETRI_PLACES=73, PETRI_TRANSITIONS=46} [2024-01-27 15:10:14,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-01-27 15:10:14,450 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 46 transitions, 308 flow [2024-01-27 15:10:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 15:10:14,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:14,451 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 15:10:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:10:14,451 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 15:10:14,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1128498936, now seen corresponding path program 1 times [2024-01-27 15:10:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:14,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294699797] [2024-01-27 15:10:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:14,543 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 15:10:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:14,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294699797] [2024-01-27 15:10:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294699797] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:14,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:14,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529176624] [2024-01-27 15:10:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:14,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-01-27 15:10:14,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 46 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 15:10:14,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:14,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-01-27 15:10:14,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:14,778 INFO L124 PetriNetUnfolderBase]: 871/1890 cut-off events. [2024-01-27 15:10:14,779 INFO L125 PetriNetUnfolderBase]: For 4962/5037 co-relation queries the response was YES. [2024-01-27 15:10:14,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 1890 events. 871/1890 cut-off events. For 4962/5037 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14352 event pairs, 252 based on Foata normal form. 69/1894 useless extension candidates. Maximal degree in co-relation 6014. Up to 632 conditions per place. [2024-01-27 15:10:14,794 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 28 selfloop transitions, 5 changer transitions 25/75 dead transitions. [2024-01-27 15:10:14,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 580 flow [2024-01-27 15:10:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:10:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:10:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-01-27 15:10:14,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2024-01-27 15:10:14,795 INFO L175 Difference]: Start difference. First operand has 73 places, 46 transitions, 308 flow. Second operand 6 states and 155 transitions. [2024-01-27 15:10:14,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 580 flow [2024-01-27 15:10:14,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 540 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-01-27 15:10:14,810 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 229 flow [2024-01-27 15:10:14,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2024-01-27 15:10:14,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-01-27 15:10:14,812 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 229 flow [2024-01-27 15:10:14,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 15:10:14,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:14,812 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 15:10:14,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:10:14,813 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 15:10:14,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1173264648, now seen corresponding path program 1 times [2024-01-27 15:10:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:14,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008305863] [2024-01-27 15:10:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:14,929 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 15:10:14,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:14,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008305863] [2024-01-27 15:10:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008305863] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:14,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:14,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551889154] [2024-01-27 15:10:14,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:14,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:14,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-01-27 15:10:14,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 15:10:14,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:14,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-01-27 15:10:14,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:15,133 INFO L124 PetriNetUnfolderBase]: 612/1205 cut-off events. [2024-01-27 15:10:15,134 INFO L125 PetriNetUnfolderBase]: For 2488/2488 co-relation queries the response was YES. [2024-01-27 15:10:15,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3996 conditions, 1205 events. 612/1205 cut-off events. For 2488/2488 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7724 event pairs, 161 based on Foata normal form. 28/1211 useless extension candidates. Maximal degree in co-relation 3968. Up to 481 conditions per place. [2024-01-27 15:10:15,142 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 31 selfloop transitions, 10 changer transitions 30/84 dead transitions. [2024-01-27 15:10:15,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 614 flow [2024-01-27 15:10:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:10:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:10:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-01-27 15:10:15,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-01-27 15:10:15,144 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 229 flow. Second operand 10 states and 230 transitions. [2024-01-27 15:10:15,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 614 flow [2024-01-27 15:10:15,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 514 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-01-27 15:10:15,154 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 231 flow [2024-01-27 15:10:15,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=231, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2024-01-27 15:10:15,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-01-27 15:10:15,156 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 231 flow [2024-01-27 15:10:15,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 15:10:15,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:15,156 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 15:10:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:10:15,158 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 15:10:15,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1755531740, now seen corresponding path program 2 times [2024-01-27 15:10:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:15,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194414991] [2024-01-27 15:10:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:15,287 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 15:10:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194414991] [2024-01-27 15:10:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194414991] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:15,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479239819] [2024-01-27 15:10:15,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:15,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:10:15,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:15,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:10:15,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:10:15,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-01-27 15:10:15,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 41 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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 15:10:15,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:15,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-01-27 15:10:15,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:15,436 INFO L124 PetriNetUnfolderBase]: 673/1332 cut-off events. [2024-01-27 15:10:15,437 INFO L125 PetriNetUnfolderBase]: For 2508/2508 co-relation queries the response was YES. [2024-01-27 15:10:15,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 1332 events. 673/1332 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8824 event pairs, 137 based on Foata normal form. 36/1344 useless extension candidates. Maximal degree in co-relation 4165. Up to 465 conditions per place. [2024-01-27 15:10:15,443 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 30 selfloop transitions, 8 changer transitions 26/77 dead transitions. [2024-01-27 15:10:15,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 563 flow [2024-01-27 15:10:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-01-27 15:10:15,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-01-27 15:10:15,445 INFO L175 Difference]: Start difference. First operand has 68 places, 41 transitions, 231 flow. Second operand 7 states and 168 transitions. [2024-01-27 15:10:15,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 563 flow [2024-01-27 15:10:15,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 541 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-01-27 15:10:15,450 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 210 flow [2024-01-27 15:10:15,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2024-01-27 15:10:15,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-01-27 15:10:15,453 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 210 flow [2024-01-27 15:10:15,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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 15:10:15,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:15,453 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 15:10:15,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:10:15,454 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 15:10:15,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash -514542763, now seen corresponding path program 1 times [2024-01-27 15:10:15,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:15,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299995296] [2024-01-27 15:10:15,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:15,544 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 15:10:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:15,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299995296] [2024-01-27 15:10:15,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299995296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:15,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228814458] [2024-01-27 15:10:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:15,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:15,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-01-27 15:10:15,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 15:10:15,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:15,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-01-27 15:10:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:15,694 INFO L124 PetriNetUnfolderBase]: 309/648 cut-off events. [2024-01-27 15:10:15,695 INFO L125 PetriNetUnfolderBase]: For 1331/1457 co-relation queries the response was YES. [2024-01-27 15:10:15,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 648 events. 309/648 cut-off events. For 1331/1457 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3695 event pairs, 100 based on Foata normal form. 35/660 useless extension candidates. Maximal degree in co-relation 1925. Up to 183 conditions per place. [2024-01-27 15:10:15,698 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 20 selfloop transitions, 2 changer transitions 33/70 dead transitions. [2024-01-27 15:10:15,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 420 flow [2024-01-27 15:10:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:10:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:10:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-01-27 15:10:15,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6286549707602339 [2024-01-27 15:10:15,700 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 210 flow. Second operand 9 states and 215 transitions. [2024-01-27 15:10:15,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 420 flow [2024-01-27 15:10:15,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 374 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-01-27 15:10:15,704 INFO L231 Difference]: Finished difference. Result has 67 places, 32 transitions, 128 flow [2024-01-27 15:10:15,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=128, PETRI_PLACES=67, PETRI_TRANSITIONS=32} [2024-01-27 15:10:15,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-01-27 15:10:15,705 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 32 transitions, 128 flow [2024-01-27 15:10:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 15:10:15,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:15,705 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 15:10:15,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:10:15,706 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 15:10:15,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash 772516977, now seen corresponding path program 1 times [2024-01-27 15:10:15,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:15,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184019089] [2024-01-27 15:10:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:15,810 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 15:10:15,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184019089] [2024-01-27 15:10:15,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184019089] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:15,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:15,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:10:15,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687079555] [2024-01-27 15:10:15,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:15,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:10:15,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:15,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:10:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:10:15,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-01-27 15:10:15,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 32 transitions, 128 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 15:10:15,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:15,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-01-27 15:10:15,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:15,875 INFO L124 PetriNetUnfolderBase]: 323/633 cut-off events. [2024-01-27 15:10:15,875 INFO L125 PetriNetUnfolderBase]: For 562/570 co-relation queries the response was YES. [2024-01-27 15:10:15,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 633 events. 323/633 cut-off events. For 562/570 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3324 event pairs, 112 based on Foata normal form. 27/631 useless extension candidates. Maximal degree in co-relation 1519. Up to 286 conditions per place. [2024-01-27 15:10:15,878 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 23 selfloop transitions, 5 changer transitions 1/45 dead transitions. [2024-01-27 15:10:15,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 45 transitions, 214 flow [2024-01-27 15:10:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:10:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:10:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-01-27 15:10:15,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7302631578947368 [2024-01-27 15:10:15,880 INFO L175 Difference]: Start difference. First operand has 67 places, 32 transitions, 128 flow. Second operand 4 states and 111 transitions. [2024-01-27 15:10:15,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 45 transitions, 214 flow [2024-01-27 15:10:15,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 180 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-01-27 15:10:15,882 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 128 flow [2024-01-27 15:10:15,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, 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=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-01-27 15:10:15,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-01-27 15:10:15,884 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 128 flow [2024-01-27 15:10:15,884 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 15:10:15,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:15,884 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 15:10:15,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:10:15,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 15:10:15,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 744474026, now seen corresponding path program 1 times [2024-01-27 15:10:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090450248] [2024-01-27 15:10:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:15,949 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 15:10:15,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090450248] [2024-01-27 15:10:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090450248] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239799500] [2024-01-27 15:10:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:15,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-01-27 15:10:15,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 128 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 15:10:15,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:15,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-01-27 15:10:15,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:16,007 INFO L124 PetriNetUnfolderBase]: 245/506 cut-off events. [2024-01-27 15:10:16,008 INFO L125 PetriNetUnfolderBase]: For 259/339 co-relation queries the response was YES. [2024-01-27 15:10:16,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 506 events. 245/506 cut-off events. For 259/339 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2465 event pairs, 27 based on Foata normal form. 30/517 useless extension candidates. Maximal degree in co-relation 1256. Up to 181 conditions per place. [2024-01-27 15:10:16,010 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 27 selfloop transitions, 8 changer transitions 1/52 dead transitions. [2024-01-27 15:10:16,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 251 flow [2024-01-27 15:10:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:10:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:10:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-01-27 15:10:16,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263157894736842 [2024-01-27 15:10:16,011 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 128 flow. Second operand 5 states and 138 transitions. [2024-01-27 15:10:16,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 251 flow [2024-01-27 15:10:16,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 241 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:16,013 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 168 flow [2024-01-27 15:10:16,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-01-27 15:10:16,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-01-27 15:10:16,013 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 168 flow [2024-01-27 15:10:16,013 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 15:10:16,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:16,014 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 15:10:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:10:16,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 15:10:16,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash -827237871, now seen corresponding path program 1 times [2024-01-27 15:10:16,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:16,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676096232] [2024-01-27 15:10:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:16,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:16,097 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 15:10:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676096232] [2024-01-27 15:10:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676096232] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:16,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300047787] [2024-01-27 15:10:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:16,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-01-27 15:10:16,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 168 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 15:10:16,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:16,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-01-27 15:10:16,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:16,170 INFO L124 PetriNetUnfolderBase]: 150/301 cut-off events. [2024-01-27 15:10:16,170 INFO L125 PetriNetUnfolderBase]: For 378/494 co-relation queries the response was YES. [2024-01-27 15:10:16,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 301 events. 150/301 cut-off events. For 378/494 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1034 event pairs, 6 based on Foata normal form. 28/316 useless extension candidates. Maximal degree in co-relation 834. Up to 84 conditions per place. [2024-01-27 15:10:16,172 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 25 selfloop transitions, 11 changer transitions 1/53 dead transitions. [2024-01-27 15:10:16,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 278 flow [2024-01-27 15:10:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:10:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:10:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-01-27 15:10:16,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2024-01-27 15:10:16,173 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 168 flow. Second operand 6 states and 159 transitions. [2024-01-27 15:10:16,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 278 flow [2024-01-27 15:10:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 237 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-01-27 15:10:16,175 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 166 flow [2024-01-27 15:10:16,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-01-27 15:10:16,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-01-27 15:10:16,176 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 166 flow [2024-01-27 15:10:16,176 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 15:10:16,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:16,176 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, 1, 1, 1] [2024-01-27 15:10:16,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:10:16,176 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 15:10:16,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1721122630, now seen corresponding path program 1 times [2024-01-27 15:10:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832326814] [2024-01-27 15:10:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:16,268 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 15:10:16,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:16,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832326814] [2024-01-27 15:10:16,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832326814] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:16,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753473399] [2024-01-27 15:10:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:16,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:16,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:16,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 15:10:16,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 15:10:16,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:16,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 15:10:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:16,359 INFO L124 PetriNetUnfolderBase]: 123/273 cut-off events. [2024-01-27 15:10:16,359 INFO L125 PetriNetUnfolderBase]: For 202/206 co-relation queries the response was YES. [2024-01-27 15:10:16,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 273 events. 123/273 cut-off events. For 202/206 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1014 event pairs, 28 based on Foata normal form. 8/260 useless extension candidates. Maximal degree in co-relation 679. Up to 113 conditions per place. [2024-01-27 15:10:16,360 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-01-27 15:10:16,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 250 flow [2024-01-27 15:10:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-01-27 15:10:16,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-01-27 15:10:16,362 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 166 flow. Second operand 7 states and 137 transitions. [2024-01-27 15:10:16,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 250 flow [2024-01-27 15:10:16,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 194 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-01-27 15:10:16,363 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-01-27 15:10:16,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-01-27 15:10:16,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-01-27 15:10:16,364 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-01-27 15:10:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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 15:10:16,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:10:16,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:10:16,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:10:16,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:10:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:10:16,367 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:16,369 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:10:16,369 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:10:16,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:10:16 BasicIcfg [2024-01-27 15:10:16,373 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:10:16,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:10:16,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:10:16,373 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:10:16,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:12" (3/4) ... [2024-01-27 15:10:16,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:10:16,378 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-01-27 15:10:16,378 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-01-27 15:10:16,378 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-01-27 15:10:16,381 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-01-27 15:10:16,381 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-01-27 15:10:16,381 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-01-27 15:10:16,381 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:10:16,439 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:10:16,440 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:10:16,440 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:10:16,440 INFO L158 Benchmark]: Toolchain (without parser) took 4983.50ms. Allocated memory was 125.8MB in the beginning and 297.8MB in the end (delta: 172.0MB). Free memory was 66.0MB in the beginning and 163.3MB in the end (delta: -97.2MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,441 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 125.8MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:10:16,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.92ms. Allocated memory was 125.8MB in the beginning and 199.2MB in the end (delta: 73.4MB). Free memory was 65.8MB in the beginning and 164.9MB in the end (delta: -99.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.63ms. Allocated memory is still 199.2MB. Free memory was 164.9MB in the beginning and 162.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,441 INFO L158 Benchmark]: Boogie Preprocessor took 63.71ms. Allocated memory is still 199.2MB. Free memory was 162.8MB in the beginning and 159.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,441 INFO L158 Benchmark]: RCFGBuilder took 370.41ms. Allocated memory is still 199.2MB. Free memory was 159.8MB in the beginning and 138.0MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,442 INFO L158 Benchmark]: TraceAbstraction took 4005.23ms. Allocated memory was 199.2MB in the beginning and 297.8MB in the end (delta: 98.6MB). Free memory was 138.0MB in the beginning and 167.4MB in the end (delta: -29.5MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,442 INFO L158 Benchmark]: Witness Printer took 66.74ms. Allocated memory is still 297.8MB. Free memory was 167.4MB in the beginning and 163.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:16,443 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 125.8MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.92ms. Allocated memory was 125.8MB in the beginning and 199.2MB in the end (delta: 73.4MB). Free memory was 65.8MB in the beginning and 164.9MB in the end (delta: -99.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.63ms. Allocated memory is still 199.2MB. Free memory was 164.9MB in the beginning and 162.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.71ms. Allocated memory is still 199.2MB. Free memory was 162.8MB in the beginning and 159.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 370.41ms. Allocated memory is still 199.2MB. Free memory was 159.8MB in the beginning and 138.0MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4005.23ms. Allocated memory was 199.2MB in the beginning and 297.8MB in the end (delta: 98.6MB). Free memory was 138.0MB in the beginning and 167.4MB in the end (delta: -29.5MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Witness Printer took 66.74ms. Allocated memory is still 297.8MB. Free memory was 167.4MB in the beginning and 163.3MB 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: 3.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 492 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 436 mSDsluCounter, 302 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 219 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1012 IncrementalHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 83 mSDtfsCounter, 1012 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=3, InterpolantAutomatonStates: 81, 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, 1.3s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 1051 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 15:10:16,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE