./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.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 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:11:41,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:11:42,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:11:42,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:11:42,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:11:42,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:11:42,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:11:42,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:11:42,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:11:42,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:11:42,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:11:42,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:11:42,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:11:42,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:11:42,121 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:11:42,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:11:42,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:11:42,122 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:11:42,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:11:42,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:11:42,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:11:42,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:11:42,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:11:42,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:11:42,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:11:42,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:11:42,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:11:42,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:11:42,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:11:42,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:11:42,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:11:42,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:11:42,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:11:42,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:11:42,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:11:42,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:11:42,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:11:42,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:11:42,135 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:11:42,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:11:42,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:11:42,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:11:42,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:11:42,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2024-01-27 16:11:42,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:11:42,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:11:42,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:11:42,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:11:42,415 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:11:42,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-01-27 16:11:43,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:11:43,876 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:11:43,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-01-27 16:11:43,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b125df78a/fca104ae085a474fb0c169584dc3902a/FLAG7e321abd5 [2024-01-27 16:11:43,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b125df78a/fca104ae085a474fb0c169584dc3902a [2024-01-27 16:11:43,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:11:43,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:11:43,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:11:43,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:11:43,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:11:43,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:11:43" (1/1) ... [2024-01-27 16:11:43,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511a6b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:43, skipping insertion in model container [2024-01-27 16:11:43,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:11:43" (1/1) ... [2024-01-27 16:11:43,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:11:44,103 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i[944,957] [2024-01-27 16:11:44,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:11:44,303 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:11:44,316 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i[944,957] [2024-01-27 16:11:44,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:11:44,443 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:11:44,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44 WrapperNode [2024-01-27 16:11:44,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:11:44,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:11:44,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:11:44,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:11:44,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,525 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 163 [2024-01-27 16:11:44,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:11:44,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:11:44,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:11:44,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:11:44,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,570 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 16:11:44,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:11:44,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:11:44,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:11:44,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:11:44,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (1/1) ... [2024-01-27 16:11:44,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:11:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:11:44,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 16:11:44,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 16:11:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:11:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:11:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:11:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:11:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:11:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:11:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:11:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:11:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:11:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:11:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:11:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:11:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:11:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:11:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:11:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:11:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:11:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:11:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:11:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:11:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:11:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:11:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:11:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:11:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:11:44,709 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:11:44,840 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:11:44,842 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:11:45,231 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:11:45,231 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:11:45,419 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:11:45,420 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:11:45,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:11:45 BoogieIcfgContainer [2024-01-27 16:11:45,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:11:45,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:11:45,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:11:45,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:11:45,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:11:43" (1/3) ... [2024-01-27 16:11:45,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd0ce72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:11:45, skipping insertion in model container [2024-01-27 16:11:45,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:44" (2/3) ... [2024-01-27 16:11:45,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd0ce72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:11:45, skipping insertion in model container [2024-01-27 16:11:45,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:11:45" (3/3) ... [2024-01-27 16:11:45,431 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-01-27 16:11:45,440 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:11:45,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:11:45,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:11:45,448 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:11:45,498 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:11:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:11:45,578 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-01-27 16:11:45,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:45,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-27 16:11:45,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:11:45,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-01-27 16:11:45,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:11:45,608 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;@6d3b674c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:11:45,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:11:45,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:11:45,619 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-01-27 16:11:45,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:45,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:45,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:45,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:45,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:45,626 INFO L85 PathProgramCache]: Analyzing trace with hash -677850650, now seen corresponding path program 1 times [2024-01-27 16:11:45,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836750713] [2024-01-27 16:11:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:45,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836750713] [2024-01-27 16:11:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836750713] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:46,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:46,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:11:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641370725] [2024-01-27 16:11:46,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:11:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:11:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:11:46,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-01-27 16:11:46,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:46,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:46,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-01-27 16:11:46,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:46,610 INFO L124 PetriNetUnfolderBase]: 879/1523 cut-off events. [2024-01-27 16:11:46,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:46,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1523 events. 879/1523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10470 event pairs, 159 based on Foata normal form. 60/1534 useless extension candidates. Maximal degree in co-relation 2831. Up to 1009 conditions per place. [2024-01-27 16:11:46,629 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 26 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-01-27 16:11:46,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 176 flow [2024-01-27 16:11:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:11:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:11:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-01-27 16:11:46,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2024-01-27 16:11:46,645 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 111 transitions. [2024-01-27 16:11:46,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 176 flow [2024-01-27 16:11:46,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:11:46,655 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-01-27 16:11:46,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-01-27 16:11:46,661 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-27 16:11:46,662 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-01-27 16:11:46,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:46,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:46,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:46,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:11:46,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:46,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash -539713762, now seen corresponding path program 1 times [2024-01-27 16:11:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195704788] [2024-01-27 16:11:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195704788] [2024-01-27 16:11:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195704788] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:47,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:47,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:11:47,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264712065] [2024-01-27 16:11:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:47,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:47,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:47,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:11:47,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:47,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:47,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:11:47,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:49,905 INFO L124 PetriNetUnfolderBase]: 15819/23779 cut-off events. [2024-01-27 16:11:49,905 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-01-27 16:11:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46469 conditions, 23779 events. 15819/23779 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 1403. Compared 182227 event pairs, 3610 based on Foata normal form. 0/23070 useless extension candidates. Maximal degree in co-relation 46459. Up to 8109 conditions per place. [2024-01-27 16:11:50,051 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 41 selfloop transitions, 8 changer transitions 85/148 dead transitions. [2024-01-27 16:11:50,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 594 flow [2024-01-27 16:11:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:11:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:11:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2024-01-27 16:11:50,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6757369614512472 [2024-01-27 16:11:50,060 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 298 transitions. [2024-01-27 16:11:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 594 flow [2024-01-27 16:11:50,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:11:50,078 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2024-01-27 16:11:50,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2024-01-27 16:11:50,081 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-01-27 16:11:50,083 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2024-01-27 16:11:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:50,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:50,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:11:50,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:50,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -764220835, now seen corresponding path program 1 times [2024-01-27 16:11:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:50,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289286516] [2024-01-27 16:11:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:50,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:50,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289286516] [2024-01-27 16:11:50,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289286516] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:50,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:50,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403724499] [2024-01-27 16:11:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:50,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:50,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:50,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:11:50,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:50,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:50,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:11:50,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:52,687 INFO L124 PetriNetUnfolderBase]: 11755/19291 cut-off events. [2024-01-27 16:11:52,688 INFO L125 PetriNetUnfolderBase]: For 29254/29260 co-relation queries the response was YES. [2024-01-27 16:11:52,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58383 conditions, 19291 events. 11755/19291 cut-off events. For 29254/29260 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 158830 event pairs, 1076 based on Foata normal form. 482/19651 useless extension candidates. Maximal degree in co-relation 58365. Up to 7211 conditions per place. [2024-01-27 16:11:52,970 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 58 selfloop transitions, 12 changer transitions 86/170 dead transitions. [2024-01-27 16:11:52,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 170 transitions, 1154 flow [2024-01-27 16:11:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:11:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:11:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2024-01-27 16:11:52,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6591836734693878 [2024-01-27 16:11:52,973 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 10 states and 323 transitions. [2024-01-27 16:11:52,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 170 transitions, 1154 flow [2024-01-27 16:11:53,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 170 transitions, 1000 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-01-27 16:11:53,097 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 310 flow [2024-01-27 16:11:53,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2024-01-27 16:11:53,099 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-01-27 16:11:53,099 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 310 flow [2024-01-27 16:11:53,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:53,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:53,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:53,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:11:53,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:53,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:53,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1912376735, now seen corresponding path program 1 times [2024-01-27 16:11:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030116778] [2024-01-27 16:11:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:53,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030116778] [2024-01-27 16:11:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030116778] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:53,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:53,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898532921] [2024-01-27 16:11:53,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:53,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:53,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:53,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:53,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:11:53,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:53,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:53,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:11:53,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:55,347 INFO L124 PetriNetUnfolderBase]: 10758/17119 cut-off events. [2024-01-27 16:11:55,348 INFO L125 PetriNetUnfolderBase]: For 50329/50329 co-relation queries the response was YES. [2024-01-27 16:11:55,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58261 conditions, 17119 events. 10758/17119 cut-off events. For 50329/50329 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 131288 event pairs, 2061 based on Foata normal form. 380/17380 useless extension candidates. Maximal degree in co-relation 58236. Up to 7010 conditions per place. [2024-01-27 16:11:55,482 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 62 selfloop transitions, 19 changer transitions 70/165 dead transitions. [2024-01-27 16:11:55,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 165 transitions, 1186 flow [2024-01-27 16:11:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:11:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:11:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2024-01-27 16:11:55,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551020408163265 [2024-01-27 16:11:55,485 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 310 flow. Second operand 10 states and 321 transitions. [2024-01-27 16:11:55,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 165 transitions, 1186 flow [2024-01-27 16:11:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 165 transitions, 1158 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-27 16:11:55,700 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 450 flow [2024-01-27 16:11:55,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-01-27 16:11:55,702 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-01-27 16:11:55,702 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 450 flow [2024-01-27 16:11:55,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:55,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:55,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:55,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:11:55,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:55,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash 909444382, now seen corresponding path program 1 times [2024-01-27 16:11:55,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:55,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052060256] [2024-01-27 16:11:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:55,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052060256] [2024-01-27 16:11:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052060256] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:55,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330330273] [2024-01-27 16:11:55,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:55,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:55,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:55,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:11:55,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:11:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:57,787 INFO L124 PetriNetUnfolderBase]: 9634/15488 cut-off events. [2024-01-27 16:11:57,787 INFO L125 PetriNetUnfolderBase]: For 68691/68715 co-relation queries the response was YES. [2024-01-27 16:11:57,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58571 conditions, 15488 events. 9634/15488 cut-off events. For 68691/68715 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 119827 event pairs, 1738 based on Foata normal form. 351/15741 useless extension candidates. Maximal degree in co-relation 58536. Up to 5064 conditions per place. [2024-01-27 16:11:57,890 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 64 selfloop transitions, 18 changer transitions 68/164 dead transitions. [2024-01-27 16:11:57,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 164 transitions, 1500 flow [2024-01-27 16:11:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:11:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:11:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-01-27 16:11:57,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061224489795919 [2024-01-27 16:11:57,899 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 450 flow. Second operand 10 states and 297 transitions. [2024-01-27 16:11:57,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 164 transitions, 1500 flow [2024-01-27 16:11:58,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 164 transitions, 1394 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-01-27 16:11:58,678 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 627 flow [2024-01-27 16:11:58,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=627, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-01-27 16:11:58,679 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-01-27 16:11:58,680 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 627 flow [2024-01-27 16:11:58,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:58,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:58,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:58,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:11:58,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:58,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash -344229288, now seen corresponding path program 1 times [2024-01-27 16:11:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407974946] [2024-01-27 16:11:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:11:58,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407974946] [2024-01-27 16:11:58,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407974946] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134943535] [2024-01-27 16:11:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:58,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:11:58,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:11:58,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:00,708 INFO L124 PetriNetUnfolderBase]: 8894/15300 cut-off events. [2024-01-27 16:12:00,708 INFO L125 PetriNetUnfolderBase]: For 69760/70898 co-relation queries the response was YES. [2024-01-27 16:12:00,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55329 conditions, 15300 events. 8894/15300 cut-off events. For 69760/70898 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 132703 event pairs, 3334 based on Foata normal form. 454/14973 useless extension candidates. Maximal degree in co-relation 55293. Up to 5801 conditions per place. [2024-01-27 16:12:00,827 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 49 selfloop transitions, 8 changer transitions 38/128 dead transitions. [2024-01-27 16:12:00,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 128 transitions, 1170 flow [2024-01-27 16:12:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-27 16:12:00,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641399416909621 [2024-01-27 16:12:00,829 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 627 flow. Second operand 7 states and 220 transitions. [2024-01-27 16:12:00,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 128 transitions, 1170 flow [2024-01-27 16:12:01,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 1117 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-01-27 16:12:01,140 INFO L231 Difference]: Finished difference. Result has 89 places, 72 transitions, 621 flow [2024-01-27 16:12:01,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2024-01-27 16:12:01,141 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-01-27 16:12:01,141 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 621 flow [2024-01-27 16:12:01,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:01,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:01,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:12:01,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:01,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2050467131, now seen corresponding path program 1 times [2024-01-27 16:12:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567970995] [2024-01-27 16:12:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567970995] [2024-01-27 16:12:01,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567970995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:01,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:01,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:12:01,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834825421] [2024-01-27 16:12:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:01,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:12:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:12:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:12:01,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:01,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 621 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:01,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:01,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:01,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:05,214 INFO L124 PetriNetUnfolderBase]: 24441/37046 cut-off events. [2024-01-27 16:12:05,215 INFO L125 PetriNetUnfolderBase]: For 89744/94003 co-relation queries the response was YES. [2024-01-27 16:12:05,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108074 conditions, 37046 events. 24441/37046 cut-off events. For 89744/94003 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 289581 event pairs, 4217 based on Foata normal form. 2218/38078 useless extension candidates. Maximal degree in co-relation 108035. Up to 19236 conditions per place. [2024-01-27 16:12:05,480 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 60 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-01-27 16:12:05,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 961 flow [2024-01-27 16:12:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:12:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:12:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-01-27 16:12:05,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-01-27 16:12:05,482 INFO L175 Difference]: Start difference. First operand has 89 places, 72 transitions, 621 flow. Second operand 4 states and 139 transitions. [2024-01-27 16:12:05,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 961 flow [2024-01-27 16:12:05,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 921 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-01-27 16:12:05,800 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 635 flow [2024-01-27 16:12:05,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=635, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-01-27 16:12:05,801 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-01-27 16:12:05,802 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 635 flow [2024-01-27 16:12:05,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:05,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:05,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:12:05,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:05,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1572524044, now seen corresponding path program 1 times [2024-01-27 16:12:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242785626] [2024-01-27 16:12:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242785626] [2024-01-27 16:12:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242785626] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:12:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704769383] [2024-01-27 16:12:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:06,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:06,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:12:06,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 635 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:06,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:06,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:12:06,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:11,255 INFO L124 PetriNetUnfolderBase]: 29596/47505 cut-off events. [2024-01-27 16:12:11,255 INFO L125 PetriNetUnfolderBase]: For 146622/148066 co-relation queries the response was YES. [2024-01-27 16:12:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158194 conditions, 47505 events. 29596/47505 cut-off events. For 146622/148066 co-relation queries the response was YES. Maximal size of possible extension queue 2529. Compared 422809 event pairs, 11570 based on Foata normal form. 701/43661 useless extension candidates. Maximal degree in co-relation 158161. Up to 18900 conditions per place. [2024-01-27 16:12:11,608 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 36 changer transitions 15/177 dead transitions. [2024-01-27 16:12:11,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 177 transitions, 1580 flow [2024-01-27 16:12:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:12:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:12:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-01-27 16:12:11,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-01-27 16:12:11,612 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 635 flow. Second operand 10 states and 306 transitions. [2024-01-27 16:12:11,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 177 transitions, 1580 flow [2024-01-27 16:12:11,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 177 transitions, 1564 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-27 16:12:11,836 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 944 flow [2024-01-27 16:12:11,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=944, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-01-27 16:12:11,837 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-01-27 16:12:11,837 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 944 flow [2024-01-27 16:12:11,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:11,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:11,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:11,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:12:11,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:11,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1905667680, now seen corresponding path program 1 times [2024-01-27 16:12:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:11,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726589756] [2024-01-27 16:12:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:11,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726589756] [2024-01-27 16:12:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726589756] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:12,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:12,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:12,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438484933] [2024-01-27 16:12:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:12,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:12,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:12,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 944 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:12,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:12,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:12,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:17,219 INFO L124 PetriNetUnfolderBase]: 32651/49111 cut-off events. [2024-01-27 16:12:17,219 INFO L125 PetriNetUnfolderBase]: For 116984/123587 co-relation queries the response was YES. [2024-01-27 16:12:17,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155601 conditions, 49111 events. 32651/49111 cut-off events. For 116984/123587 co-relation queries the response was YES. Maximal size of possible extension queue 2676. Compared 390107 event pairs, 3201 based on Foata normal form. 2817/50728 useless extension candidates. Maximal degree in co-relation 155560. Up to 20808 conditions per place. [2024-01-27 16:12:17,545 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 84 selfloop transitions, 10 changer transitions 8/147 dead transitions. [2024-01-27 16:12:17,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 147 transitions, 1552 flow [2024-01-27 16:12:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:12:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:12:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-01-27 16:12:17,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726530612244898 [2024-01-27 16:12:17,547 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 944 flow. Second operand 5 states and 178 transitions. [2024-01-27 16:12:17,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 147 transitions, 1552 flow [2024-01-27 16:12:18,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 1532 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-01-27 16:12:18,114 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 879 flow [2024-01-27 16:12:18,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=879, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-01-27 16:12:18,115 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-01-27 16:12:18,115 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 879 flow [2024-01-27 16:12:18,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:18,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:18,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:18,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:12:18,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:18,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1665590223, now seen corresponding path program 1 times [2024-01-27 16:12:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692334533] [2024-01-27 16:12:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692334533] [2024-01-27 16:12:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692334533] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:18,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:18,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568848236] [2024-01-27 16:12:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:18,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:18,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 879 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:18,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:18,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:22,391 INFO L124 PetriNetUnfolderBase]: 26099/39271 cut-off events. [2024-01-27 16:12:22,391 INFO L125 PetriNetUnfolderBase]: For 110450/117567 co-relation queries the response was YES. [2024-01-27 16:12:22,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138736 conditions, 39271 events. 26099/39271 cut-off events. For 110450/117567 co-relation queries the response was YES. Maximal size of possible extension queue 2211. Compared 303660 event pairs, 1373 based on Foata normal form. 2313/40584 useless extension candidates. Maximal degree in co-relation 138691. Up to 12860 conditions per place. [2024-01-27 16:12:22,639 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 90 selfloop transitions, 14 changer transitions 7/155 dead transitions. [2024-01-27 16:12:22,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 155 transitions, 1571 flow [2024-01-27 16:12:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:12:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:12:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-01-27 16:12:22,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7312925170068028 [2024-01-27 16:12:22,641 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 879 flow. Second operand 6 states and 215 transitions. [2024-01-27 16:12:22,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 155 transitions, 1571 flow [2024-01-27 16:12:22,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 155 transitions, 1545 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-01-27 16:12:22,763 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 920 flow [2024-01-27 16:12:22,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-01-27 16:12:22,764 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-01-27 16:12:22,764 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 920 flow [2024-01-27 16:12:22,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:22,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:22,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:22,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 16:12:22,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:22,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 770194646, now seen corresponding path program 1 times [2024-01-27 16:12:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3082176] [2024-01-27 16:12:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3082176] [2024-01-27 16:12:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3082176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:12:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509330774] [2024-01-27 16:12:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:22,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:12:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:12:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:12:23,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:23,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 920 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:23,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:23,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:23,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:27,258 INFO L124 PetriNetUnfolderBase]: 23295/34931 cut-off events. [2024-01-27 16:12:27,258 INFO L125 PetriNetUnfolderBase]: For 136667/143742 co-relation queries the response was YES. [2024-01-27 16:12:27,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135131 conditions, 34931 events. 23295/34931 cut-off events. For 136667/143742 co-relation queries the response was YES. Maximal size of possible extension queue 2200. Compared 268430 event pairs, 1301 based on Foata normal form. 1491/35446 useless extension candidates. Maximal degree in co-relation 135087. Up to 12860 conditions per place. [2024-01-27 16:12:27,449 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 75 selfloop transitions, 18 changer transitions 16/148 dead transitions. [2024-01-27 16:12:27,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 148 transitions, 1478 flow [2024-01-27 16:12:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-01-27 16:12:27,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6822157434402333 [2024-01-27 16:12:27,451 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 920 flow. Second operand 7 states and 234 transitions. [2024-01-27 16:12:27,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 148 transitions, 1478 flow [2024-01-27 16:12:28,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 1405 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-01-27 16:12:28,002 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 792 flow [2024-01-27 16:12:28,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=792, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-01-27 16:12:28,003 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 41 predicate places. [2024-01-27 16:12:28,003 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 792 flow [2024-01-27 16:12:28,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:28,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:28,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:28,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 16:12:28,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:28,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1807629426, now seen corresponding path program 1 times [2024-01-27 16:12:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:28,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607706214] [2024-01-27 16:12:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607706214] [2024-01-27 16:12:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607706214] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:28,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:28,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:12:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566737663] [2024-01-27 16:12:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:28,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:28,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:28,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 792 flow. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:28,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:28,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:28,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:30,641 INFO L124 PetriNetUnfolderBase]: 11897/22371 cut-off events. [2024-01-27 16:12:30,642 INFO L125 PetriNetUnfolderBase]: For 60760/64640 co-relation queries the response was YES. [2024-01-27 16:12:30,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73362 conditions, 22371 events. 11897/22371 cut-off events. For 60760/64640 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 221583 event pairs, 3508 based on Foata normal form. 328/19989 useless extension candidates. Maximal degree in co-relation 73321. Up to 7109 conditions per place. [2024-01-27 16:12:30,772 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 51 selfloop transitions, 5 changer transitions 12/121 dead transitions. [2024-01-27 16:12:30,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 1099 flow [2024-01-27 16:12:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:12:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:12:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-01-27 16:12:30,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6292517006802721 [2024-01-27 16:12:30,774 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 792 flow. Second operand 6 states and 185 transitions. [2024-01-27 16:12:30,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 1099 flow [2024-01-27 16:12:31,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 1004 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-01-27 16:12:31,506 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 766 flow [2024-01-27 16:12:31,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-01-27 16:12:31,508 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places. [2024-01-27 16:12:31,508 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 766 flow [2024-01-27 16:12:31,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:31,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:31,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:31,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 16:12:31,509 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:31,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2042808854, now seen corresponding path program 2 times [2024-01-27 16:12:31,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:31,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630139546] [2024-01-27 16:12:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630139546] [2024-01-27 16:12:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630139546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:32,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:12:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913585997] [2024-01-27 16:12:32,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:32,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:12:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:12:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:12:32,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 49 [2024-01-27 16:12:32,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 766 flow. Second operand has 9 states, 9 states have (on average 25.0) internal successors, (225), 9 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:32,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:32,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 49 [2024-01-27 16:12:32,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand