./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/goblint-regression/36-apron_21-traces-cluster-based_true.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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:26:28,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:26:28,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:26:28,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:26:28,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:26:28,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:26:28,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:26:28,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:26:28,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:26:28,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:26:28,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:26:28,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:26:28,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:26:28,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:26:28,641 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:26:28,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:26:28,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:26:28,642 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:26:28,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:26:28,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:26:28,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:26:28,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:26:28,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:26:28,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:26:28,644 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:26:28,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:26:28,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:26:28,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:26:28,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:26:28,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:26:28,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:26:28,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:26:28,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:26:28,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:26:28,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:26:28,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:26:28,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:26:28,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:26:28,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:26:28,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:26:28,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:26:28,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:26:28,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:26:28,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-06-27 16:26:28,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:26:28,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:26:28,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:26:28,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:26:28,896 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:26:28,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-27 16:26:30,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:26:30,361 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:26:30,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-27 16:26:30,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b17d0e2/f21192db6ca94fd5aecefb1f0707d7b7/FLAGa642ef9f8 [2024-06-27 16:26:30,389 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b17d0e2/f21192db6ca94fd5aecefb1f0707d7b7 [2024-06-27 16:26:30,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:26:30,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:26:30,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:26:30,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:26:30,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:26:30,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:30,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362b3370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30, skipping insertion in model container [2024-06-27 16:26:30,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:30,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:26:30,643 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-06-27 16:26:30,829 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:26:30,844 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:26:30,858 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-06-27 16:26:30,912 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:26:30,945 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:26:30,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30 WrapperNode [2024-06-27 16:26:30,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:26:30,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:26:30,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:26:30,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:26:30,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:30,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,009 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-06-27 16:26:31,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:26:31,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:26:31,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:26:31,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:26:31,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,031 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-27 16:26:31,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:26:31,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:26:31,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:26:31,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:26:31,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (1/1) ... [2024-06-27 16:26:31,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:26:31,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:31,101 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) [2024-06-27 16:26:31,126 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 [2024-06-27 16:26:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-27 16:26:31,157 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-27 16:26:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 16:26:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:26:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-06-27 16:26:31,158 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-06-27 16:26:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 16:26:31,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 16:26:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:26:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:26:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 16:26:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 16:26:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:26:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:26:31,164 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:26:31,312 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:26:31,315 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:26:31,517 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:26:31,523 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:26:31,747 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:26:31,752 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:26:31,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:26:31 BoogieIcfgContainer [2024-06-27 16:26:31,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:26:31,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:26:31,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:26:31,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:26:31,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:26:30" (1/3) ... [2024-06-27 16:26:31,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f1d9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:26:31, skipping insertion in model container [2024-06-27 16:26:31,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:30" (2/3) ... [2024-06-27 16:26:31,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f1d9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:26:31, skipping insertion in model container [2024-06-27 16:26:31,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:26:31" (3/3) ... [2024-06-27 16:26:31,761 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-06-27 16:26:31,767 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:26:31,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:26:31,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 16:26:31,776 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:26:31,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:26:31,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-06-27 16:26:31,905 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-06-27 16:26:31,906 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:26:31,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-06-27 16:26:31,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-06-27 16:26:31,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-06-27 16:26:31,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:26:31,934 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;@7529d8a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:26:31,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 16:26:31,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:26:31,949 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-06-27 16:26:31,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:26:31,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:31,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:31,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:26:31,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1047439611, now seen corresponding path program 1 times [2024-06-27 16:26:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:31,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256400771] [2024-06-27 16:26:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:26:32,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:32,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256400771] [2024-06-27 16:26:32,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256400771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:26:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:26:32,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:26:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323219823] [2024-06-27 16:26:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:26:32,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:26:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:26:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:26:32,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-06-27 16:26:32,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:26:32,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:32,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-06-27 16:26:32,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:36,919 INFO L124 PetriNetUnfolderBase]: 30713/46966 cut-off events. [2024-06-27 16:26:36,920 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-06-27 16:26:37,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90095 conditions, 46966 events. 30713/46966 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 350992 event pairs, 7163 based on Foata normal form. 3860/49784 useless extension candidates. Maximal degree in co-relation 90084. Up to 11332 conditions per place. [2024-06-27 16:26:37,371 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 190 selfloop transitions, 11 changer transitions 0/220 dead transitions. [2024-06-27 16:26:37,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 220 transitions, 872 flow [2024-06-27 16:26:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:26:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:26:37,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 401 transitions. [2024-06-27 16:26:37,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371323529411765 [2024-06-27 16:26:37,393 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 401 transitions. [2024-06-27 16:26:37,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 220 transitions, 872 flow [2024-06-27 16:26:37,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 220 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 16:26:37,405 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2024-06-27 16:26:37,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-06-27 16:26:37,413 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-06-27 16:26:37,413 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2024-06-27 16:26:37,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:26:37,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:37,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:37,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:26:37,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:26:37,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1610142895, now seen corresponding path program 1 times [2024-06-27 16:26:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967274582] [2024-06-27 16:26:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:26:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967274582] [2024-06-27 16:26:37,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967274582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:26:37,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:26:37,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:26:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082073203] [2024-06-27 16:26:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:26:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:26:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:26:37,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:26:37,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-06-27 16:26:37,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-06-27 16:26:37,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:37,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-06-27 16:26:37,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:42,432 INFO L124 PetriNetUnfolderBase]: 46522/71671 cut-off events. [2024-06-27 16:26:42,432 INFO L125 PetriNetUnfolderBase]: For 13700/13700 co-relation queries the response was YES. [2024-06-27 16:26:42,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153092 conditions, 71671 events. 46522/71671 cut-off events. For 13700/13700 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 569589 event pairs, 9900 based on Foata normal form. 0/70263 useless extension candidates. Maximal degree in co-relation 153078. Up to 27642 conditions per place. [2024-06-27 16:26:42,832 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 193 selfloop transitions, 17 changer transitions 0/228 dead transitions. [2024-06-27 16:26:42,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 1054 flow [2024-06-27 16:26:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:26:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:26:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2024-06-27 16:26:42,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2024-06-27 16:26:42,836 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 346 transitions. [2024-06-27 16:26:42,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 1054 flow [2024-06-27 16:26:43,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:26:43,594 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2024-06-27 16:26:43,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-06-27 16:26:43,595 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-06-27 16:26:43,595 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2024-06-27 16:26:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-06-27 16:26:43,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:43,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:26:43,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:26:43,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 719434576, now seen corresponding path program 1 times [2024-06-27 16:26:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:43,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943277998] [2024-06-27 16:26:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:26:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:43,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943277998] [2024-06-27 16:26:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943277998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:26:43,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:26:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:26:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79191148] [2024-06-27 16:26:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:26:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:26:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:26:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:26:43,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-06-27 16:26:43,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-06-27 16:26:43,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:43,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-06-27 16:26:43,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:50,299 INFO L124 PetriNetUnfolderBase]: 60127/97639 cut-off events. [2024-06-27 16:26:50,299 INFO L125 PetriNetUnfolderBase]: For 38504/38959 co-relation queries the response was YES. [2024-06-27 16:26:50,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226000 conditions, 97639 events. 60127/97639 cut-off events. For 38504/38959 co-relation queries the response was YES. Maximal size of possible extension queue 2970. Compared 870448 event pairs, 20848 based on Foata normal form. 0/96306 useless extension candidates. Maximal degree in co-relation 225980. Up to 41717 conditions per place. [2024-06-27 16:26:51,142 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 215 selfloop transitions, 17 changer transitions 3/257 dead transitions. [2024-06-27 16:26:51,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 257 transitions, 1362 flow [2024-06-27 16:26:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:26:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:26:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2024-06-27 16:26:51,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2024-06-27 16:26:51,146 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 363 transitions. [2024-06-27 16:26:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 257 transitions, 1362 flow [2024-06-27 16:26:54,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 257 transitions, 1362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:26:54,018 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2024-06-27 16:26:54,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-06-27 16:26:54,019 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-06-27 16:26:54,019 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2024-06-27 16:26:54,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2024-06-27 16:26:54,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:54,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:26:54,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:26:54,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash 400966673, now seen corresponding path program 1 times [2024-06-27 16:26:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:54,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954659428] [2024-06-27 16:26:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:26:54,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954659428] [2024-06-27 16:26:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954659428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:26:54,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:26:54,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:26:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575170012] [2024-06-27 16:26:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:26:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:26:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:26:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:26:54,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-06-27 16:26:54,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-06-27 16:26:54,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:54,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-06-27 16:26:54,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:59,200 INFO L124 PetriNetUnfolderBase]: 38911/66921 cut-off events. [2024-06-27 16:26:59,200 INFO L125 PetriNetUnfolderBase]: For 41210/42412 co-relation queries the response was YES. [2024-06-27 16:26:59,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169790 conditions, 66921 events. 38911/66921 cut-off events. For 41210/42412 co-relation queries the response was YES. Maximal size of possible extension queue 2467. Compared 631582 event pairs, 13965 based on Foata normal form. 3031/69788 useless extension candidates. Maximal degree in co-relation 169764. Up to 34535 conditions per place. [2024-06-27 16:26:59,587 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 118 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2024-06-27 16:26:59,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 156 transitions, 942 flow [2024-06-27 16:26:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:26:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:26:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-06-27 16:26:59,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-06-27 16:26:59,589 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 150 transitions. [2024-06-27 16:26:59,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 156 transitions, 942 flow [2024-06-27 16:27:02,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:27:02,195 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2024-06-27 16:27:02,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-06-27 16:27:02,197 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2024-06-27 16:27:02,197 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2024-06-27 16:27:02,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-06-27 16:27:02,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:27:02,198 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] [2024-06-27 16:27:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:27:02,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:27:02,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:27:02,198 INFO L85 PathProgramCache]: Analyzing trace with hash 709116081, now seen corresponding path program 1 times [2024-06-27 16:27:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:27:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937783443] [2024-06-27 16:27:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:27:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:27:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:27:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:27:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:27:02,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937783443] [2024-06-27 16:27:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937783443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:27:02,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:27:02,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:27:02,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204386345] [2024-06-27 16:27:02,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:27:02,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:27:02,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:27:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:27:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:27:02,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-06-27 16:27:02,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-06-27 16:27:02,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:27:02,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-06-27 16:27:02,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:27:04,971 INFO L124 PetriNetUnfolderBase]: 20387/36627 cut-off events. [2024-06-27 16:27:04,972 INFO L125 PetriNetUnfolderBase]: For 30812/31812 co-relation queries the response was YES. [2024-06-27 16:27:05,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103013 conditions, 36627 events. 20387/36627 cut-off events. For 30812/31812 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 327574 event pairs, 5653 based on Foata normal form. 1395/37913 useless extension candidates. Maximal degree in co-relation 102985. Up to 18926 conditions per place. [2024-06-27 16:27:05,175 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 104 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2024-06-27 16:27:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 139 transitions, 853 flow [2024-06-27 16:27:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:27:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:27:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-27 16:27:05,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-27 16:27:05,176 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 160 transitions. [2024-06-27 16:27:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 139 transitions, 853 flow [2024-06-27 16:27:06,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 139 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:27:06,181 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2024-06-27 16:27:06,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-06-27 16:27:06,182 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2024-06-27 16:27:06,182 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2024-06-27 16:27:06,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2024-06-27 16:27:06,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:27:06,183 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] [2024-06-27 16:27:06,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:27:06,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:27:06,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:27:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 236048221, now seen corresponding path program 1 times [2024-06-27 16:27:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:27:06,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861930959] [2024-06-27 16:27:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:27:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:27:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:27:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:27:06,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:27:06,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861930959] [2024-06-27 16:27:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861930959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:27:06,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:27:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:27:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605441316] [2024-06-27 16:27:06,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:27:06,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:27:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:27:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:27:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:27:06,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-06-27 16:27:06,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-06-27 16:27:06,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:27:06,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-06-27 16:27:06,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:27:09,647 INFO L124 PetriNetUnfolderBase]: 24250/40158 cut-off events. [2024-06-27 16:27:09,648 INFO L125 PetriNetUnfolderBase]: For 35796/36716 co-relation queries the response was YES. [2024-06-27 16:27:09,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116793 conditions, 40158 events. 24250/40158 cut-off events. For 35796/36716 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 331715 event pairs, 4853 based on Foata normal form. 545/40624 useless extension candidates. Maximal degree in co-relation 116764. Up to 11342 conditions per place. [2024-06-27 16:27:09,804 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 202 selfloop transitions, 27 changer transitions 27/277 dead transitions. [2024-06-27 16:27:09,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 277 transitions, 1812 flow [2024-06-27 16:27:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:27:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:27:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 350 transitions. [2024-06-27 16:27:09,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6433823529411765 [2024-06-27 16:27:09,806 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 350 transitions. [2024-06-27 16:27:09,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 277 transitions, 1812 flow [2024-06-27 16:27:10,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 277 transitions, 1758 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 16:27:10,376 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2024-06-27 16:27:10,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-06-27 16:27:10,377 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-06-27 16:27:10,377 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2024-06-27 16:27:10,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-06-27 16:27:10,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:27:10,378 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] [2024-06-27 16:27:10,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:27:10,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:27:10,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:27:10,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1083601452, now seen corresponding path program 1 times [2024-06-27 16:27:10,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:27:10,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895594078] [2024-06-27 16:27:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:27:10,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:27:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:27:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:27:10,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:27:10,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895594078] [2024-06-27 16:27:10,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895594078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:27:10,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:27:10,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:27:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502333426] [2024-06-27 16:27:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:27:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:27:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:27:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:27:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:27:10,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-06-27 16:27:10,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:27:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:27:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-06-27 16:27:10,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:27:13,319 INFO L124 PetriNetUnfolderBase]: 22611/36771 cut-off events. [2024-06-27 16:27:13,319 INFO L125 PetriNetUnfolderBase]: For 36052/36123 co-relation queries the response was YES. [2024-06-27 16:27:13,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108624 conditions, 36771 events. 22611/36771 cut-off events. For 36052/36123 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 290088 event pairs, 4720 based on Foata normal form. 650/37390 useless extension candidates. Maximal degree in co-relation 108596. Up to 7735 conditions per place. [2024-06-27 16:27:13,768 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 204 selfloop transitions, 41 changer transitions 33/295 dead transitions. [2024-06-27 16:27:13,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 295 transitions, 1911 flow [2024-06-27 16:27:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 16:27:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 16:27:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 447 transitions. [2024-06-27 16:27:13,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2024-06-27 16:27:13,771 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 447 transitions. [2024-06-27 16:27:13,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 295 transitions, 1911 flow [2024-06-27 16:27:14,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 1908 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 16:27:14,087 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2024-06-27 16:27:14,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-06-27 16:27:14,087 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2024-06-27 16:27:14,088 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2024-06-27 16:27:14,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:27:14,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:27:14,088 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, 1] [2024-06-27 16:27:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:27:14,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:27:14,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:27:14,089 INFO L85 PathProgramCache]: Analyzing trace with hash 288745811, now seen corresponding path program 1 times [2024-06-27 16:27:14,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:27:14,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949567333] [2024-06-27 16:27:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:27:14,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:27:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:27:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:27:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:27:14,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949567333] [2024-06-27 16:27:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949567333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:27:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:27:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:27:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381097094] [2024-06-27 16:27:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:27:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:27:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:27:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:27:14,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:27:14,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-06-27 16:27:14,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-06-27 16:27:14,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:27:14,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-06-27 16:27:14,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:27:17,313 INFO L124 PetriNetUnfolderBase]: 21659/35739 cut-off events. [2024-06-27 16:27:17,313 INFO L125 PetriNetUnfolderBase]: For 54189/54682 co-relation queries the response was YES. [2024-06-27 16:27:17,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113969 conditions, 35739 events. 21659/35739 cut-off events. For 54189/54682 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 283306 event pairs, 5623 based on Foata normal form. 422/36121 useless extension candidates. Maximal degree in co-relation 113937. Up to 7264 conditions per place. [2024-06-27 16:27:17,450 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 107 selfloop transitions, 20 changer transitions 150/293 dead transitions. [2024-06-27 16:27:17,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 293 transitions, 2117 flow [2024-06-27 16:27:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:27:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:27:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 438 transitions. [2024-06-27 16:27:17,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855614973262032 [2024-06-27 16:27:17,452 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 438 transitions. [2024-06-27 16:27:17,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 293 transitions, 2117 flow [2024-06-27 16:27:17,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 293 transitions, 2052 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 16:27:17,958 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 457 flow [2024-06-27 16:27:17,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=457, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2024-06-27 16:27:17,959 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 51 predicate places. [2024-06-27 16:27:17,959 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 457 flow [2024-06-27 16:27:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-06-27 16:27:17,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:27:17,960 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, 1, 1, 1, 1, 1] [2024-06-27 16:27:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:27:17,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-06-27 16:27:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:27:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash -700491726, now seen corresponding path program 1 times [2024-06-27 16:27:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:27:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657331785] [2024-06-27 16:27:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:27:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:27:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:27:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:27:18,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:27:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657331785] [2024-06-27 16:27:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657331785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:27:18,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:27:18,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:27:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642727986] [2024-06-27 16:27:18,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:27:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:27:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:27:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:27:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:27:18,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2024-06-27 16:27:18,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-06-27 16:27:18,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:27:18,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2024-06-27 16:27:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:27:18,558 INFO L124 PetriNetUnfolderBase]: 1444/2506 cut-off events. [2024-06-27 16:27:18,558 INFO L125 PetriNetUnfolderBase]: For 2626/2692 co-relation queries the response was YES. [2024-06-27 16:27:18,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7258 conditions, 2506 events. 1444/2506 cut-off events. For 2626/2692 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13539 event pairs, 509 based on Foata normal form. 114/2612 useless extension candidates. Maximal degree in co-relation 7243. Up to 1376 conditions per place. [2024-06-27 16:27:18,567 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2024-06-27 16:27:18,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 553 flow [2024-06-27 16:27:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:27:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:27:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-06-27 16:27:18,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-06-27 16:27:18,569 INFO L175 Difference]: Start difference. First operand has 121 places, 82 transitions, 457 flow. Second operand 4 states and 148 transitions. [2024-06-27 16:27:18,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 553 flow [2024-06-27 16:27:18,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 476 flow, removed 2 selfloop flow, removed 19 redundant places. [2024-06-27 16:27:18,579 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2024-06-27 16:27:18,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2024-06-27 16:27:18,580 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2024-06-27 16:27:18,580 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2024-06-27 16:27:18,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-06-27 16:27:18,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2024-06-27 16:27:18,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-06-27 16:27:18,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-06-27 16:27:18,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-06-27 16:27:18,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-06-27 16:27:18,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-06-27 16:27:18,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2024-06-27 16:27:18,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-06-27 16:27:18,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-06-27 16:27:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:27:18,590 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:27:18,595 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:27:18,595 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:27:18,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:27:18 BasicIcfg [2024-06-27 16:27:18,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:27:18,602 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:27:18,602 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:27:18,602 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:27:18,603 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:26:31" (3/4) ... [2024-06-27 16:27:18,604 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:27:18,612 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2024-06-27 16:27:18,612 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2024-06-27 16:27:18,612 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-06-27 16:27:18,617 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-06-27 16:27:18,617 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-06-27 16:27:18,617 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-06-27 16:27:18,618 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-06-27 16:27:18,701 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:27:18,702 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:27:18,702 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:27:18,703 INFO L158 Benchmark]: Toolchain (without parser) took 48310.34ms. Allocated memory was 142.6MB in the beginning and 14.7GB in the end (delta: 14.5GB). Free memory was 109.1MB in the beginning and 12.0GB in the end (delta: -11.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2024-06-27 16:27:18,703 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 108.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:27:18,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.13ms. Allocated memory is still 142.6MB. Free memory was 108.8MB in the beginning and 87.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 16:27:18,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.77ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 85.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:27:18,704 INFO L158 Benchmark]: Boogie Preprocessor took 45.66ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 82.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:27:18,704 INFO L158 Benchmark]: RCFGBuilder took 697.21ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 82.6MB in the beginning and 125.6MB in the end (delta: -43.1MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2024-06-27 16:27:18,705 INFO L158 Benchmark]: TraceAbstraction took 46846.50ms. Allocated memory was 172.0MB in the beginning and 14.7GB in the end (delta: 14.5GB). Free memory was 124.8MB in the beginning and 12.0GB in the end (delta: -11.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2024-06-27 16:27:18,705 INFO L158 Benchmark]: Witness Printer took 100.20ms. Allocated memory is still 14.7GB. Free memory was 12.0GB in the beginning and 12.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:27:18,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 108.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.13ms. Allocated memory is still 142.6MB. Free memory was 108.8MB in the beginning and 87.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.77ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 85.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.66ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 82.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 697.21ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 82.6MB in the beginning and 125.6MB in the end (delta: -43.1MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * TraceAbstraction took 46846.50ms. Allocated memory was 172.0MB in the beginning and 14.7GB in the end (delta: 14.5GB). Free memory was 124.8MB in the beginning and 12.0GB in the end (delta: -11.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 100.20ms. Allocated memory is still 14.7GB. Free memory was 12.0GB in the beginning and 12.0GB 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: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 107 locations, 9 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: 46.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 44.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1030 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1009 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2743 IncrementalHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 4 mSDtfsCounter, 2743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=7, InterpolantAutomatonStates: 66, 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, 1.4s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:27:18,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE