./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_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/13-privatized_68-pfscan_protected_loop_minimal_interval_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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:24:41,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:24:41,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:24:41,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:24:41,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:24:41,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:24:41,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:24:41,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:24:41,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:24:41,106 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:24:41,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:24:41,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:24:41,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:24:41,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:24:41,109 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:24:41,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:24:41,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:24:41,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:24:41,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:24:41,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:24:41,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:24:41,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:24:41,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:24:41,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:24:41,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:24:41,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:24:41,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:24:41,111 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:24:41,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:24:41,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:24:41,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:24:41,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:24:41,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:24:41,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:24:41,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:24:41,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:24:41,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:24:41,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:24:41,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:24:41,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:24:41,115 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:24:41,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:24:41,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:24:41,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-06-27 16:24:41,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:24:41,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:24:41,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:24:41,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:24:41,370 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:24:41,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-27 16:24:42,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:24:42,565 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:24:42,565 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-27 16:24:42,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7418a75e5/231536084bcc4167b7d9b53c5dbad03f/FLAGd433745d6 [2024-06-27 16:24:42,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7418a75e5/231536084bcc4167b7d9b53c5dbad03f [2024-06-27 16:24:42,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:24:42,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:24:42,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:24:42,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:24:42,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:24:42,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:42,597 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e846f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42, skipping insertion in model container [2024-06-27 16:24:42,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:42,626 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:24:42,763 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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-06-27 16:24:42,870 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:24:42,877 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:24:42,887 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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-06-27 16:24:42,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:24:42,949 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:24:42,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42 WrapperNode [2024-06-27 16:24:42,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:24:42,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:24:42,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:24:42,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:24:42,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:42,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:42,985 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 119 [2024-06-27 16:24:42,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:24:42,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:24:42,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:24:42,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:24:42,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:42,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:42,996 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,006 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-06-27 16:24:43,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:24:43,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:24:43,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:24:43,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:24:43,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (1/1) ... [2024-06-27 16:24:43,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:24:43,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:24:43,045 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 16:24:43,054 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 16:24:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:24:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:24:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-06-27 16:24:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-06-27 16:24:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:24:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:24:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 16:24:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:24:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:24:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:24:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 16:24:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:24:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:24:43,091 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 16:24:43,206 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:24:43,208 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:24:43,439 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:24:43,440 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:24:43,545 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:24:43,545 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-27 16:24:43,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:24:43 BoogieIcfgContainer [2024-06-27 16:24:43,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:24:43,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:24:43,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:24:43,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:24:43,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:24:42" (1/3) ... [2024-06-27 16:24:43,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fd14fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:24:43, skipping insertion in model container [2024-06-27 16:24:43,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:42" (2/3) ... [2024-06-27 16:24:43,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fd14fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:24:43, skipping insertion in model container [2024-06-27 16:24:43,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:24:43" (3/3) ... [2024-06-27 16:24:43,556 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-27 16:24:43,564 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:24:43,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:24:43,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 16:24:43,573 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:24:43,613 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:24:43,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2024-06-27 16:24:43,668 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-06-27 16:24:43,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:24:43,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 16:24:43,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2024-06-27 16:24:43,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2024-06-27 16:24:43,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:24:43,695 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;@7743dbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:24:43,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 16:24:43,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:24:43,708 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-06-27 16:24:43,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:24:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:43,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:43,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:43,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1096289878, now seen corresponding path program 1 times [2024-06-27 16:24:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009461372] [2024-06-27 16:24:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:43,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:44,100 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 16:24:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009461372] [2024-06-27 16:24:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009461372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:44,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:24:44,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856645348] [2024-06-27 16:24:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:44,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:24:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:44,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:24:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:24:44,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 16:24:44,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 16:24:44,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:44,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 16:24:44,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:44,340 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-06-27 16:24:44,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:24:44,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 450 events. 218/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1932 event pairs, 20 based on Foata normal form. 37/406 useless extension candidates. Maximal degree in co-relation 851. Up to 241 conditions per place. [2024-06-27 16:24:44,344 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-27 16:24:44,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 265 flow [2024-06-27 16:24:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:24:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:24:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-27 16:24:44,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2024-06-27 16:24:44,357 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 6 states and 119 transitions. [2024-06-27 16:24:44,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 265 flow [2024-06-27 16:24:44,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:24:44,364 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 168 flow [2024-06-27 16:24:44,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-06-27 16:24:44,368 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-06-27 16:24:44,369 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 168 flow [2024-06-27 16:24:44,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 16:24:44,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:44,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:24:44,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:44,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash 374721697, now seen corresponding path program 1 times [2024-06-27 16:24:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:44,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441240450] [2024-06-27 16:24:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:44,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:44,452 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 16:24:44,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:44,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441240450] [2024-06-27 16:24:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441240450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:44,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:44,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:24:44,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854904861] [2024-06-27 16:24:44,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:44,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:24:44,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:44,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:24:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:24:44,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-06-27 16:24:44,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 16:24:44,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:44,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-06-27 16:24:44,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:44,693 INFO L124 PetriNetUnfolderBase]: 278/559 cut-off events. [2024-06-27 16:24:44,694 INFO L125 PetriNetUnfolderBase]: For 185/187 co-relation queries the response was YES. [2024-06-27 16:24:44,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 559 events. 278/559 cut-off events. For 185/187 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2448 event pairs, 60 based on Foata normal form. 20/538 useless extension candidates. Maximal degree in co-relation 1382. Up to 303 conditions per place. [2024-06-27 16:24:44,698 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-06-27 16:24:44,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 474 flow [2024-06-27 16:24:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:24:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:24:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 16:24:44,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 16:24:44,700 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2024-06-27 16:24:44,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 474 flow [2024-06-27 16:24:44,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:24:44,707 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 366 flow [2024-06-27 16:24:44,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2024-06-27 16:24:44,708 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-06-27 16:24:44,708 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 366 flow [2024-06-27 16:24:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 16:24:44,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:44,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:24:44,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1532167700, now seen corresponding path program 1 times [2024-06-27 16:24:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303769036] [2024-06-27 16:24:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:44,885 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 16:24:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:44,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303769036] [2024-06-27 16:24:44,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303769036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:44,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:44,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:24:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236835521] [2024-06-27 16:24:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:24:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:24:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:24:44,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 16:24:44,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 16:24:44,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:44,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 16:24:44,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:45,111 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2024-06-27 16:24:45,112 INFO L125 PetriNetUnfolderBase]: For 1246/1263 co-relation queries the response was YES. [2024-06-27 16:24:45,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 859 events. 399/859 cut-off events. For 1246/1263 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4790 event pairs, 87 based on Foata normal form. 16/819 useless extension candidates. Maximal degree in co-relation 2722. Up to 360 conditions per place. [2024-06-27 16:24:45,117 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-06-27 16:24:45,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 942 flow [2024-06-27 16:24:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:24:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:24:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 16:24:45,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2024-06-27 16:24:45,119 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2024-06-27 16:24:45,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 942 flow [2024-06-27 16:24:45,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:24:45,127 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 588 flow [2024-06-27 16:24:45,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2024-06-27 16:24:45,128 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2024-06-27 16:24:45,128 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 588 flow [2024-06-27 16:24:45,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 16:24:45,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:45,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:45,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:24:45,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -178204838, now seen corresponding path program 2 times [2024-06-27 16:24:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579372099] [2024-06-27 16:24:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:45,457 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 16:24:45,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:45,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579372099] [2024-06-27 16:24:45,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579372099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:45,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:45,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:24:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275890402] [2024-06-27 16:24:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:24:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:24:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:24:45,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-06-27 16:24:45,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 16:24:45,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:45,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-06-27 16:24:45,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:45,779 INFO L124 PetriNetUnfolderBase]: 485/974 cut-off events. [2024-06-27 16:24:45,780 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-06-27 16:24:45,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3572 conditions, 974 events. 485/974 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5063 event pairs, 125 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 3547. Up to 623 conditions per place. [2024-06-27 16:24:45,802 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 77 selfloop transitions, 67 changer transitions 0/150 dead transitions. [2024-06-27 16:24:45,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 150 transitions, 1398 flow [2024-06-27 16:24:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 16:24:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 16:24:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2024-06-27 16:24:45,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39293139293139295 [2024-06-27 16:24:45,804 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 588 flow. Second operand 13 states and 189 transitions. [2024-06-27 16:24:45,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 150 transitions, 1398 flow [2024-06-27 16:24:45,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 150 transitions, 1358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:45,812 INFO L231 Difference]: Finished difference. Result has 76 places, 116 transitions, 1098 flow [2024-06-27 16:24:45,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1098, PETRI_PLACES=76, PETRI_TRANSITIONS=116} [2024-06-27 16:24:45,813 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2024-06-27 16:24:45,813 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 116 transitions, 1098 flow [2024-06-27 16:24:45,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 16:24:45,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:45,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:24:45,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:45,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1362561722, now seen corresponding path program 3 times [2024-06-27 16:24:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471416809] [2024-06-27 16:24:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:45,927 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 16:24:45,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:45,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471416809] [2024-06-27 16:24:45,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471416809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:45,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:45,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:24:45,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301832126] [2024-06-27 16:24:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:45,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:24:45,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:45,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:24:45,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:24:45,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 16:24:45,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 116 transitions, 1098 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 16:24:45,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:45,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 16:24:45,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:46,146 INFO L124 PetriNetUnfolderBase]: 466/1016 cut-off events. [2024-06-27 16:24:46,146 INFO L125 PetriNetUnfolderBase]: For 2829/2866 co-relation queries the response was YES. [2024-06-27 16:24:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 1016 events. 466/1016 cut-off events. For 2829/2866 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5724 event pairs, 83 based on Foata normal form. 48/1053 useless extension candidates. Maximal degree in co-relation 4028. Up to 415 conditions per place. [2024-06-27 16:24:46,153 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 25 changer transitions 0/189 dead transitions. [2024-06-27 16:24:46,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 189 transitions, 1941 flow [2024-06-27 16:24:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:24:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:24:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 16:24:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-06-27 16:24:46,155 INFO L175 Difference]: Start difference. First operand has 76 places, 116 transitions, 1098 flow. Second operand 6 states and 135 transitions. [2024-06-27 16:24:46,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 189 transitions, 1941 flow [2024-06-27 16:24:46,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 189 transitions, 1919 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-27 16:24:46,165 INFO L231 Difference]: Finished difference. Result has 84 places, 125 transitions, 1204 flow [2024-06-27 16:24:46,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1204, PETRI_PLACES=84, PETRI_TRANSITIONS=125} [2024-06-27 16:24:46,166 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2024-06-27 16:24:46,166 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 125 transitions, 1204 flow [2024-06-27 16:24:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 16:24:46,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:46,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:24:46,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:46,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1394856322, now seen corresponding path program 4 times [2024-06-27 16:24:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574583918] [2024-06-27 16:24:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:46,304 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 16:24:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574583918] [2024-06-27 16:24:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574583918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:46,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:46,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:24:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072831411] [2024-06-27 16:24:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:46,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:24:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:24:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:24:46,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 16:24:46,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 125 transitions, 1204 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 16:24:46,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:46,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 16:24:46,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:46,584 INFO L124 PetriNetUnfolderBase]: 674/1469 cut-off events. [2024-06-27 16:24:46,584 INFO L125 PetriNetUnfolderBase]: For 5661/5689 co-relation queries the response was YES. [2024-06-27 16:24:46,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 1469 events. 674/1469 cut-off events. For 5661/5689 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8676 event pairs, 175 based on Foata normal form. 21/1482 useless extension candidates. Maximal degree in co-relation 6640. Up to 763 conditions per place. [2024-06-27 16:24:46,594 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 134 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-06-27 16:24:46,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 197 transitions, 2105 flow [2024-06-27 16:24:46,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:24:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:24:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 16:24:46,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640926640926641 [2024-06-27 16:24:46,595 INFO L175 Difference]: Start difference. First operand has 84 places, 125 transitions, 1204 flow. Second operand 7 states and 166 transitions. [2024-06-27 16:24:46,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 197 transitions, 2105 flow [2024-06-27 16:24:46,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 197 transitions, 2096 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 16:24:46,613 INFO L231 Difference]: Finished difference. Result has 91 places, 135 transitions, 1449 flow [2024-06-27 16:24:46,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=91, PETRI_TRANSITIONS=135} [2024-06-27 16:24:46,616 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2024-06-27 16:24:46,616 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 135 transitions, 1449 flow [2024-06-27 16:24:46,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 16:24:46,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:46,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:46,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:24:46,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:46,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1697026510, now seen corresponding path program 5 times [2024-06-27 16:24:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204262236] [2024-06-27 16:24:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:46,756 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 16:24:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204262236] [2024-06-27 16:24:46,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204262236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:46,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:46,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:24:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139887384] [2024-06-27 16:24:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:46,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:24:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:24:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:24:46,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 16:24:46,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 135 transitions, 1449 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 16:24:46,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:46,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 16:24:46,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:47,065 INFO L124 PetriNetUnfolderBase]: 835/1837 cut-off events. [2024-06-27 16:24:47,065 INFO L125 PetriNetUnfolderBase]: For 8545/8570 co-relation queries the response was YES. [2024-06-27 16:24:47,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 1837 events. 835/1837 cut-off events. For 8545/8570 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11105 event pairs, 212 based on Foata normal form. 24/1855 useless extension candidates. Maximal degree in co-relation 8525. Up to 621 conditions per place. [2024-06-27 16:24:47,076 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 162 selfloop transitions, 48 changer transitions 0/228 dead transitions. [2024-06-27 16:24:47,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 228 transitions, 2565 flow [2024-06-27 16:24:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:24:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:24:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 16:24:47,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 16:24:47,078 INFO L175 Difference]: Start difference. First operand has 91 places, 135 transitions, 1449 flow. Second operand 7 states and 168 transitions. [2024-06-27 16:24:47,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 228 transitions, 2565 flow [2024-06-27 16:24:47,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 228 transitions, 2510 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:47,096 INFO L231 Difference]: Finished difference. Result has 98 places, 148 transitions, 1728 flow [2024-06-27 16:24:47,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1728, PETRI_PLACES=98, PETRI_TRANSITIONS=148} [2024-06-27 16:24:47,097 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2024-06-27 16:24:47,097 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 148 transitions, 1728 flow [2024-06-27 16:24:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 16:24:47,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:47,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:47,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:24:47,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:47,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:47,098 INFO L85 PathProgramCache]: Analyzing trace with hash -369696630, now seen corresponding path program 6 times [2024-06-27 16:24:47,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:47,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049869537] [2024-06-27 16:24:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:47,310 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 16:24:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049869537] [2024-06-27 16:24:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049869537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:47,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:47,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:24:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647434541] [2024-06-27 16:24:47,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:24:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:24:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:24:47,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 16:24:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 148 transitions, 1728 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 16:24:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 16:24:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:47,701 INFO L124 PetriNetUnfolderBase]: 927/1931 cut-off events. [2024-06-27 16:24:47,701 INFO L125 PetriNetUnfolderBase]: For 10042/10125 co-relation queries the response was YES. [2024-06-27 16:24:47,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9295 conditions, 1931 events. 927/1931 cut-off events. For 10042/10125 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11197 event pairs, 232 based on Foata normal form. 80/1995 useless extension candidates. Maximal degree in co-relation 9253. Up to 1355 conditions per place. [2024-06-27 16:24:47,714 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 111 selfloop transitions, 69 changer transitions 0/193 dead transitions. [2024-06-27 16:24:47,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 193 transitions, 2443 flow [2024-06-27 16:24:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:24:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:24:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 16:24:47,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 16:24:47,716 INFO L175 Difference]: Start difference. First operand has 98 places, 148 transitions, 1728 flow. Second operand 9 states and 150 transitions. [2024-06-27 16:24:47,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 193 transitions, 2443 flow [2024-06-27 16:24:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 193 transitions, 2317 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 16:24:47,740 INFO L231 Difference]: Finished difference. Result has 107 places, 165 transitions, 2034 flow [2024-06-27 16:24:47,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2034, PETRI_PLACES=107, PETRI_TRANSITIONS=165} [2024-06-27 16:24:47,744 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 74 predicate places. [2024-06-27 16:24:47,744 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 165 transitions, 2034 flow [2024-06-27 16:24:47,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 16:24:47,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:47,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:47,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:24:47,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:47,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1428128358, now seen corresponding path program 7 times [2024-06-27 16:24:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:47,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157430995] [2024-06-27 16:24:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:47,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:47,880 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 16:24:47,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:47,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157430995] [2024-06-27 16:24:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157430995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:47,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:47,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:24:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614416250] [2024-06-27 16:24:47,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:47,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:24:47,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:24:47,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:24:47,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 16:24:47,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 165 transitions, 2034 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 16:24:47,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:47,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 16:24:47,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:48,153 INFO L124 PetriNetUnfolderBase]: 715/1613 cut-off events. [2024-06-27 16:24:48,153 INFO L125 PetriNetUnfolderBase]: For 8287/8360 co-relation queries the response was YES. [2024-06-27 16:24:48,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7831 conditions, 1613 events. 715/1613 cut-off events. For 8287/8360 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9931 event pairs, 62 based on Foata normal form. 88/1687 useless extension candidates. Maximal degree in co-relation 7785. Up to 631 conditions per place. [2024-06-27 16:24:48,166 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 67 changer transitions 0/230 dead transitions. [2024-06-27 16:24:48,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 230 transitions, 2859 flow [2024-06-27 16:24:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:24:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:24:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 16:24:48,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-06-27 16:24:48,167 INFO L175 Difference]: Start difference. First operand has 107 places, 165 transitions, 2034 flow. Second operand 6 states and 130 transitions. [2024-06-27 16:24:48,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 230 transitions, 2859 flow [2024-06-27 16:24:48,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 230 transitions, 2675 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 16:24:48,187 INFO L231 Difference]: Finished difference. Result has 107 places, 164 transitions, 1937 flow [2024-06-27 16:24:48,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1937, PETRI_PLACES=107, PETRI_TRANSITIONS=164} [2024-06-27 16:24:48,187 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 74 predicate places. [2024-06-27 16:24:48,187 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 164 transitions, 1937 flow [2024-06-27 16:24:48,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 16:24:48,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:48,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:48,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:24:48,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:48,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash 307488961, now seen corresponding path program 1 times [2024-06-27 16:24:48,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:48,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892124280] [2024-06-27 16:24:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:48,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892124280] [2024-06-27 16:24:48,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892124280] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:24:48,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508150411] [2024-06-27 16:24:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:48,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:24:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:24:48,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:24:48,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:24:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:48,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2024-06-27 16:24:48,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:24:48,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-06-27 16:24:48,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-06-27 16:24:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:48,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:24:48,935 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-06-27 16:24:48,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2024-06-27 16:24:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508150411] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 16:24:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:24:48,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 21 [2024-06-27 16:24:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132723220] [2024-06-27 16:24:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:48,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:24:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:24:48,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-06-27 16:24:48,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 16:24:48,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 164 transitions, 1937 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 16:24:48,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:48,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 16:24:48,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:49,378 INFO L124 PetriNetUnfolderBase]: 1155/2496 cut-off events. [2024-06-27 16:24:49,378 INFO L125 PetriNetUnfolderBase]: For 13498/13548 co-relation queries the response was YES. [2024-06-27 16:24:49,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12922 conditions, 2496 events. 1155/2496 cut-off events. For 13498/13548 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16116 event pairs, 88 based on Foata normal form. 27/2514 useless extension candidates. Maximal degree in co-relation 12875. Up to 827 conditions per place. [2024-06-27 16:24:49,398 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 145 selfloop transitions, 126 changer transitions 0/285 dead transitions. [2024-06-27 16:24:49,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 285 transitions, 3748 flow [2024-06-27 16:24:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:24:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:24:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 16:24:49,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-27 16:24:49,399 INFO L175 Difference]: Start difference. First operand has 107 places, 164 transitions, 1937 flow. Second operand 7 states and 132 transitions. [2024-06-27 16:24:49,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 285 transitions, 3748 flow [2024-06-27 16:24:49,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 285 transitions, 3596 flow, removed 71 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:49,456 INFO L231 Difference]: Finished difference. Result has 115 places, 224 transitions, 3013 flow [2024-06-27 16:24:49,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3013, PETRI_PLACES=115, PETRI_TRANSITIONS=224} [2024-06-27 16:24:49,457 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2024-06-27 16:24:49,457 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 224 transitions, 3013 flow [2024-06-27 16:24:49,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 16:24:49,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:49,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:49,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:24:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-06-27 16:24:49,669 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:49,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 555639181, now seen corresponding path program 2 times [2024-06-27 16:24:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:49,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023449972] [2024-06-27 16:24:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:49,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023449972] [2024-06-27 16:24:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023449972] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:24:49,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456476916] [2024-06-27 16:24:49,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:24:49,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:24:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:24:49,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:24:50,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:24:50,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 16:24:50,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:24:50,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 16:24:50,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:24:50,129 INFO L349 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2024-06-27 16:24:50,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 43 [2024-06-27 16:24:50,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-06-27 16:24:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:24:50,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:24:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456476916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:24:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2024-06-27 16:24:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458583636] [2024-06-27 16:24:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:24:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:24:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:24:50,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 16:24:50,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 224 transitions, 3013 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 16:24:50,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:50,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 16:24:50,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:50,604 INFO L124 PetriNetUnfolderBase]: 1095/2371 cut-off events. [2024-06-27 16:24:50,604 INFO L125 PetriNetUnfolderBase]: For 16593/16636 co-relation queries the response was YES. [2024-06-27 16:24:50,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 2371 events. 1095/2371 cut-off events. For 16593/16636 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15107 event pairs, 141 based on Foata normal form. 61/2425 useless extension candidates. Maximal degree in co-relation 13318. Up to 964 conditions per place. [2024-06-27 16:24:50,625 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 128 selfloop transitions, 122 changer transitions 0/263 dead transitions. [2024-06-27 16:24:50,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 263 transitions, 3839 flow [2024-06-27 16:24:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:24:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:24:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 16:24:50,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 16:24:50,627 INFO L175 Difference]: Start difference. First operand has 115 places, 224 transitions, 3013 flow. Second operand 5 states and 91 transitions. [2024-06-27 16:24:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 263 transitions, 3839 flow [2024-06-27 16:24:50,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 263 transitions, 3759 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:50,667 INFO L231 Difference]: Finished difference. Result has 115 places, 222 transitions, 3167 flow [2024-06-27 16:24:50,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3167, PETRI_PLACES=115, PETRI_TRANSITIONS=222} [2024-06-27 16:24:50,668 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 82 predicate places. [2024-06-27 16:24:50,668 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 222 transitions, 3167 flow [2024-06-27 16:24:50,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 16:24:50,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:50,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:50,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:24:50,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-27 16:24:50,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:50,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2123911676, now seen corresponding path program 1 times [2024-06-27 16:24:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565242279] [2024-06-27 16:24:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:50,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:50,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565242279] [2024-06-27 16:24:50,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565242279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:50,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:50,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:24:50,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978338543] [2024-06-27 16:24:50,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:50,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:24:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:50,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:24:50,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:24:50,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 16:24:50,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 222 transitions, 3167 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 16:24:50,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:50,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 16:24:50,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:51,330 INFO L124 PetriNetUnfolderBase]: 1028/2196 cut-off events. [2024-06-27 16:24:51,330 INFO L125 PetriNetUnfolderBase]: For 17226/17320 co-relation queries the response was YES. [2024-06-27 16:24:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12843 conditions, 2196 events. 1028/2196 cut-off events. For 17226/17320 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13230 event pairs, 270 based on Foata normal form. 9/2180 useless extension candidates. Maximal degree in co-relation 12793. Up to 1873 conditions per place. [2024-06-27 16:24:51,346 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 158 selfloop transitions, 8 changer transitions 22/197 dead transitions. [2024-06-27 16:24:51,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 197 transitions, 3029 flow [2024-06-27 16:24:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:24:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:24:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-27 16:24:51,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 16:24:51,347 INFO L175 Difference]: Start difference. First operand has 115 places, 222 transitions, 3167 flow. Second operand 5 states and 95 transitions. [2024-06-27 16:24:51,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 197 transitions, 3029 flow [2024-06-27 16:24:51,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 197 transitions, 2824 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 16:24:51,379 INFO L231 Difference]: Finished difference. Result has 116 places, 174 transitions, 2225 flow [2024-06-27 16:24:51,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2225, PETRI_PLACES=116, PETRI_TRANSITIONS=174} [2024-06-27 16:24:51,380 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-06-27 16:24:51,380 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 174 transitions, 2225 flow [2024-06-27 16:24:51,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 16:24:51,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:51,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:51,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 16:24:51,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:51,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1655239682, now seen corresponding path program 1 times [2024-06-27 16:24:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807127192] [2024-06-27 16:24:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:24:51,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:51,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807127192] [2024-06-27 16:24:51,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807127192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:51,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:51,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:24:51,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408787451] [2024-06-27 16:24:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:51,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:24:51,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:24:51,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:24:51,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-06-27 16:24:51,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 174 transitions, 2225 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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 16:24:51,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:51,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-06-27 16:24:51,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:51,978 INFO L124 PetriNetUnfolderBase]: 1108/2269 cut-off events. [2024-06-27 16:24:51,978 INFO L125 PetriNetUnfolderBase]: For 14874/14936 co-relation queries the response was YES. [2024-06-27 16:24:51,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 2269 events. 1108/2269 cut-off events. For 14874/14936 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13363 event pairs, 104 based on Foata normal form. 51/2319 useless extension candidates. Maximal degree in co-relation 12212. Up to 963 conditions per place. [2024-06-27 16:24:51,995 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 244 selfloop transitions, 27 changer transitions 0/276 dead transitions. [2024-06-27 16:24:51,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 276 transitions, 3881 flow [2024-06-27 16:24:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:24:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:24:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-27 16:24:51,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-27 16:24:51,996 INFO L175 Difference]: Start difference. First operand has 116 places, 174 transitions, 2225 flow. Second operand 6 states and 103 transitions. [2024-06-27 16:24:51,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 276 transitions, 3881 flow [2024-06-27 16:24:52,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 276 transitions, 3734 flow, removed 31 selfloop flow, removed 17 redundant places. [2024-06-27 16:24:52,027 INFO L231 Difference]: Finished difference. Result has 99 places, 181 transitions, 2265 flow [2024-06-27 16:24:52,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2265, PETRI_PLACES=99, PETRI_TRANSITIONS=181} [2024-06-27 16:24:52,028 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2024-06-27 16:24:52,028 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 181 transitions, 2265 flow [2024-06-27 16:24:52,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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 16:24:52,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:52,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 16:24:52,028 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:52,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 799663309, now seen corresponding path program 1 times [2024-06-27 16:24:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239377782] [2024-06-27 16:24:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239377782] [2024-06-27 16:24:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239377782] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:24:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629397577] [2024-06-27 16:24:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:52,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:24:52,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:24:52,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:24:52,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:24:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:52,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 39 conjunts are in the unsatisfiable core [2024-06-27 16:24:52,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:24:52,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-06-27 16:24:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:52,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:24:52,745 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-06-27 16:24:52,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2024-06-27 16:24:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629397577] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:24:52,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:24:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2024-06-27 16:24:52,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982667572] [2024-06-27 16:24:52,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:24:52,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-06-27 16:24:52,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:52,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-06-27 16:24:52,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-06-27 16:24:52,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-06-27 16:24:52,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 181 transitions, 2265 flow. Second operand has 26 states, 26 states have (on average 9.5) internal successors, (247), 26 states have internal predecessors, (247), 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 16:24:52,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:52,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-06-27 16:24:52,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:54,146 INFO L124 PetriNetUnfolderBase]: 1695/3502 cut-off events. [2024-06-27 16:24:54,146 INFO L125 PetriNetUnfolderBase]: For 24883/24987 co-relation queries the response was YES. [2024-06-27 16:24:54,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19871 conditions, 3502 events. 1695/3502 cut-off events. For 24883/24987 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22374 event pairs, 171 based on Foata normal form. 114/3615 useless extension candidates. Maximal degree in co-relation 19829. Up to 1053 conditions per place. [2024-06-27 16:24:54,171 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 236 selfloop transitions, 282 changer transitions 17/540 dead transitions. [2024-06-27 16:24:54,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 540 transitions, 6950 flow [2024-06-27 16:24:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-06-27 16:24:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-06-27 16:24:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 490 transitions. [2024-06-27 16:24:54,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38950715421303655 [2024-06-27 16:24:54,173 INFO L175 Difference]: Start difference. First operand has 99 places, 181 transitions, 2265 flow. Second operand 34 states and 490 transitions. [2024-06-27 16:24:54,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 540 transitions, 6950 flow [2024-06-27 16:24:54,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 540 transitions, 6837 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:54,212 INFO L231 Difference]: Finished difference. Result has 152 places, 339 transitions, 5227 flow [2024-06-27 16:24:54,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5227, PETRI_PLACES=152, PETRI_TRANSITIONS=339} [2024-06-27 16:24:54,212 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2024-06-27 16:24:54,212 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 339 transitions, 5227 flow [2024-06-27 16:24:54,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.5) internal successors, (247), 26 states have internal predecessors, (247), 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 16:24:54,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:54,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:54,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 16:24:54,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:24:54,426 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 16:24:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2125400354, now seen corresponding path program 1 times [2024-06-27 16:24:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771871067] [2024-06-27 16:24:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771871067] [2024-06-27 16:24:54,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771871067] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:24:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839783378] [2024-06-27 16:24:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:54,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:24:54,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:24:54,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:24:54,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:24:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:54,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2024-06-27 16:24:54,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:24:54,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-06-27 16:24:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:54,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:24:54,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-06-27 16:24:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839783378] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:24:54,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:24:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2024-06-27 16:24:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231321488] [2024-06-27 16:24:54,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:24:54,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 16:24:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 16:24:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 16:24:54,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 16:24:54,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 339 transitions, 5227 flow. Second operand has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 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 16:24:54,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:54,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 16:24:54,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:55,311 INFO L124 PetriNetUnfolderBase]: 422/1095 cut-off events. [2024-06-27 16:24:55,311 INFO L125 PetriNetUnfolderBase]: For 18182/18254 co-relation queries the response was YES. [2024-06-27 16:24:55,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 1095 events. 422/1095 cut-off events. For 18182/18254 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6209 event pairs, 35 based on Foata normal form. 125/1212 useless extension candidates. Maximal degree in co-relation 8069. Up to 344 conditions per place. [2024-06-27 16:24:55,317 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 0 selfloop transitions, 0 changer transitions 279/279 dead transitions. [2024-06-27 16:24:55,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 279 transitions, 4950 flow [2024-06-27 16:24:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 16:24:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 16:24:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 250 transitions. [2024-06-27 16:24:55,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222972972972973 [2024-06-27 16:24:55,319 INFO L175 Difference]: Start difference. First operand has 152 places, 339 transitions, 5227 flow. Second operand 16 states and 250 transitions. [2024-06-27 16:24:55,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 279 transitions, 4950 flow [2024-06-27 16:24:55,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 279 transitions, 4201 flow, removed 149 selfloop flow, removed 19 redundant places. [2024-06-27 16:24:55,355 INFO L231 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2024-06-27 16:24:55,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2024-06-27 16:24:55,355 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 101 predicate places. [2024-06-27 16:24:55,355 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2024-06-27 16:24:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 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 16:24:55,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-06-27 16:24:55,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-06-27 16:24:55,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-27 16:24:55,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-06-27 16:24:55,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-06-27 16:24:55,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:24:55,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-06-27 16:24:55,567 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:55,571 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:24:55,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:24:55,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:24:55 BasicIcfg [2024-06-27 16:24:55,573 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:24:55,574 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:24:55,574 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:24:55,574 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:24:55,574 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:24:43" (3/4) ... [2024-06-27 16:24:55,575 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:24:55,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-06-27 16:24:55,580 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2024-06-27 16:24:55,580 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-06-27 16:24:55,580 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-06-27 16:24:55,580 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-06-27 16:24:55,644 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:24:55,644 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:24:55,644 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:24:55,645 INFO L158 Benchmark]: Toolchain (without parser) took 13054.95ms. Allocated memory was 161.5MB in the beginning and 677.4MB in the end (delta: 515.9MB). Free memory was 91.2MB in the beginning and 446.6MB in the end (delta: -355.4MB). Peak memory consumption was 162.1MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,645 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:24:55,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.13ms. Allocated memory is still 161.5MB. Free memory was 91.0MB in the beginning and 121.8MB in the end (delta: -30.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.02ms. Allocated memory is still 161.5MB. Free memory was 121.8MB in the beginning and 119.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,645 INFO L158 Benchmark]: Boogie Preprocessor took 32.08ms. Allocated memory is still 161.5MB. Free memory was 119.2MB in the beginning and 117.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,646 INFO L158 Benchmark]: RCFGBuilder took 527.02ms. Allocated memory is still 161.5MB. Free memory was 116.3MB in the beginning and 84.0MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,646 INFO L158 Benchmark]: TraceAbstraction took 12026.21ms. Allocated memory was 161.5MB in the beginning and 677.4MB in the end (delta: 515.9MB). Free memory was 82.7MB in the beginning and 450.8MB in the end (delta: -368.0MB). Peak memory consumption was 147.6MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,646 INFO L158 Benchmark]: Witness Printer took 70.41ms. Allocated memory is still 677.4MB. Free memory was 450.8MB in the beginning and 446.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:24:55,647 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.13ms. Allocated memory is still 161.5MB. Free memory was 91.0MB in the beginning and 121.8MB in the end (delta: -30.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.02ms. Allocated memory is still 161.5MB. Free memory was 121.8MB in the beginning and 119.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.08ms. Allocated memory is still 161.5MB. Free memory was 119.2MB in the beginning and 117.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.02ms. Allocated memory is still 161.5MB. Free memory was 116.3MB in the beginning and 84.0MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12026.21ms. Allocated memory was 161.5MB in the beginning and 677.4MB in the end (delta: 515.9MB). Free memory was 82.7MB in the beginning and 450.8MB in the end (delta: -368.0MB). Peak memory consumption was 147.6MB. Max. memory is 16.1GB. * Witness Printer took 70.41ms. Allocated memory is still 677.4MB. Free memory was 450.8MB in the beginning and 446.6MB 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 5 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: 11.9s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1174 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1123 mSDsluCounter, 272 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3694 IncrementalHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 60 mSDtfsCounter, 3694 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5227occurred in iteration=14, InterpolantAutomatonStates: 140, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 363 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 419 ConstructedInterpolants, 5 QuantifiedInterpolants, 3268 SizeOfPredicates, 53 NumberOfNonLiveVariables, 679 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 39/64 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:24:55,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE