./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix043.oepc.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/mix043.oepc.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 9bfd96daa3950021158d7079dc25a62741fa5d5a7f9e521049c1a78760db50f1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:13:46,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:13:47,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:13:47,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:13:47,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:13:47,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:13:47,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:13:47,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:13:47,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:13:47,083 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:13:47,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:13:47,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:13:47,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:13:47,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:13:47,086 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:13:47,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:13:47,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:13:47,086 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:13:47,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:13:47,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:13:47,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:13:47,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:13:47,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:13:47,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:13:47,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:13:47,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:13:47,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:13:47,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:13:47,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:13:47,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:13:47,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:13:47,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:13:47,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:13:47,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:13:47,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:13:47,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:13:47,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:13:47,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:13:47,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:13:47,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:13:47,092 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:13:47,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:13:47,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:13:47,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfd96daa3950021158d7079dc25a62741fa5d5a7f9e521049c1a78760db50f1 [2024-01-27 16:13:47,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:13:47,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:13:47,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:13:47,341 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:13:47,342 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:13:47,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix043.oepc.i [2024-01-27 16:13:48,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:13:48,598 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:13:48,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix043.oepc.i [2024-01-27 16:13:48,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3fd76e1/fd71893e23864ecd9d7ebcb33c22ea8a/FLAGbf44e73a4 [2024-01-27 16:13:48,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3fd76e1/fd71893e23864ecd9d7ebcb33c22ea8a [2024-01-27 16:13:48,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:13:48,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:13:48,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:13:48,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:13:48,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:13:48,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:13:48" (1/1) ... [2024-01-27 16:13:48,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cc9e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:48, skipping insertion in model container [2024-01-27 16:13:48,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:13:48" (1/1) ... [2024-01-27 16:13:48,670 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:13:48,820 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/mix043.oepc.i[945,958] [2024-01-27 16:13:49,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:13:49,022 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:13:49,031 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/mix043.oepc.i[945,958] [2024-01-27 16:13:49,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:13:49,133 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:13:49,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49 WrapperNode [2024-01-27 16:13:49,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:13:49,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:13:49,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:13:49,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:13:49,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,216 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-01-27 16:13:49,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:13:49,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:13:49,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:13:49,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:13:49,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,242 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 16:13:49,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:13:49,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:13:49,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:13:49,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:13:49,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (1/1) ... [2024-01-27 16:13:49,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:13:49,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:13:49,346 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 16:13:49,360 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 16:13:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:13:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:13:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:13:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:13:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:13:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:13:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:13:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:13:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:13:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:13:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:13:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:13:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:13:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:13:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:13:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:13:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:13:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:13:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:13:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:13:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:13:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:13:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:13:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:13:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:13:49,400 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 16:13:49,545 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:13:49,546 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:13:49,804 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:13:49,804 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:13:49,943 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:13:49,943 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:13:49,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:13:49 BoogieIcfgContainer [2024-01-27 16:13:49,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:13:49,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:13:49,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:13:49,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:13:49,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:13:48" (1/3) ... [2024-01-27 16:13:49,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ae972c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:13:49, skipping insertion in model container [2024-01-27 16:13:49,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:49" (2/3) ... [2024-01-27 16:13:49,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ae972c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:13:49, skipping insertion in model container [2024-01-27 16:13:49,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:13:49" (3/3) ... [2024-01-27 16:13:49,951 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.oepc.i [2024-01-27 16:13:49,957 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:13:49,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:13:49,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:13:49,964 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:13:50,006 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:13:50,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:13:50,062 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-27 16:13:50,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:13:50,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-01-27 16:13:50,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:13:50,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-01-27 16:13:50,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:13:50,089 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;@7411227c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:13:50,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:13:50,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:13:50,095 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:13:50,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:13:50,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:50,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:13:50,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:50,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash 12425846, now seen corresponding path program 1 times [2024-01-27 16:13:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:50,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178275597] [2024-01-27 16:13:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:50,448 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 16:13:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178275597] [2024-01-27 16:13:50,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178275597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:50,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:50,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:13:50,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400121595] [2024-01-27 16:13:50,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:50,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:13:50,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:13:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:13:50,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-01-27 16:13:50,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 16:13:50,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:50,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-01-27 16:13:50,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:51,194 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2024-01-27 16:13:51,194 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:13:51,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24948 event pairs, 1647 based on Foata normal form. 135/4035 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2024-01-27 16:13:51,215 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-01-27 16:13:51,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-01-27 16:13:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:13:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:13:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-01-27 16:13:51,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-01-27 16:13:51,225 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-01-27 16:13:51,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-01-27 16:13:51,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:13:51,230 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-01-27 16:13:51,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-01-27 16:13:51,234 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-01-27 16:13:51,234 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-01-27 16:13:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 16:13:51,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:51,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:51,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:13:51,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:51,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1295638666, now seen corresponding path program 1 times [2024-01-27 16:13:51,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:51,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775127074] [2024-01-27 16:13:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:51,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:51,462 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 16:13:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775127074] [2024-01-27 16:13:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775127074] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:13:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633887142] [2024-01-27 16:13:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:13:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:13:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:13:51,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:13:51,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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 16:13:51,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:51,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:13:51,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:54,989 INFO L124 PetriNetUnfolderBase]: 27273/39264 cut-off events. [2024-01-27 16:13:54,990 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2024-01-27 16:13:55,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78181 conditions, 39264 events. 27273/39264 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 282288 event pairs, 6783 based on Foata normal form. 0/38324 useless extension candidates. Maximal degree in co-relation 78171. Up to 15294 conditions per place. [2024-01-27 16:13:55,214 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 48 selfloop transitions, 7 changer transitions 96/164 dead transitions. [2024-01-27 16:13:55,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 164 transitions, 662 flow [2024-01-27 16:13:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:13:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:13:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-01-27 16:13:55,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-01-27 16:13:55,218 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2024-01-27 16:13:55,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 164 transitions, 662 flow [2024-01-27 16:13:55,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 164 transitions, 644 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:13:55,221 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 190 flow [2024-01-27 16:13:55,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-01-27 16:13:55,222 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-01-27 16:13:55,222 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 190 flow [2024-01-27 16:13:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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 16:13:55,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:55,223 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 16:13:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:13:55,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:55,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1397604523, now seen corresponding path program 1 times [2024-01-27 16:13:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391149935] [2024-01-27 16:13:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:55,394 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 16:13:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:55,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391149935] [2024-01-27 16:13:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391149935] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:55,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:55,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:13:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984176849] [2024-01-27 16:13:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:55,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:13:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:13:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:13:55,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-01-27 16:13:55,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:55,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:55,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-01-27 16:13:55,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:57,954 INFO L124 PetriNetUnfolderBase]: 14613/22526 cut-off events. [2024-01-27 16:13:57,954 INFO L125 PetriNetUnfolderBase]: For 20805/21821 co-relation queries the response was YES. [2024-01-27 16:13:58,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59141 conditions, 22526 events. 14613/22526 cut-off events. For 20805/21821 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 171697 event pairs, 3697 based on Foata normal form. 766/22367 useless extension candidates. Maximal degree in co-relation 59123. Up to 12059 conditions per place. [2024-01-27 16:13:58,083 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 34 selfloop transitions, 3 changer transitions 43/101 dead transitions. [2024-01-27 16:13:58,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 514 flow [2024-01-27 16:13:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:13:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:13:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-01-27 16:13:58,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371428571428571 [2024-01-27 16:13:58,087 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 190 flow. Second operand 7 states and 223 transitions. [2024-01-27 16:13:58,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 514 flow [2024-01-27 16:13:58,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 464 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-01-27 16:13:58,208 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 179 flow [2024-01-27 16:13:58,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-01-27 16:13:58,208 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-01-27 16:13:58,209 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 179 flow [2024-01-27 16:13:58,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:58,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:58,209 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 16:13:58,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:13:58,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:58,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 661650636, now seen corresponding path program 1 times [2024-01-27 16:13:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:58,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991203241] [2024-01-27 16:13:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:58,329 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 16:13:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:58,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991203241] [2024-01-27 16:13:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991203241] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:58,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:13:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152360075] [2024-01-27 16:13:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:58,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:13:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:13:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:13:58,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:13:58,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 16:13:58,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:58,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:13:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:01,640 INFO L124 PetriNetUnfolderBase]: 26204/39319 cut-off events. [2024-01-27 16:14:01,641 INFO L125 PetriNetUnfolderBase]: For 21117/24951 co-relation queries the response was YES. [2024-01-27 16:14:01,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91372 conditions, 39319 events. 26204/39319 cut-off events. For 21117/24951 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 292769 event pairs, 3927 based on Foata normal form. 1794/39903 useless extension candidates. Maximal degree in co-relation 91351. Up to 19808 conditions per place. [2024-01-27 16:14:01,933 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2024-01-27 16:14:01,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 393 flow [2024-01-27 16:14:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:14:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:14:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-27 16:14:01,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-01-27 16:14:01,935 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 179 flow. Second operand 4 states and 141 transitions. [2024-01-27 16:14:01,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 393 flow [2024-01-27 16:14:02,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 375 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-27 16:14:02,005 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 207 flow [2024-01-27 16:14:02,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-01-27 16:14:02,006 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-01-27 16:14:02,006 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 207 flow [2024-01-27 16:14:02,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 16:14:02,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:02,007 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 16:14:02,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:14:02,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:02,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1984120784, now seen corresponding path program 1 times [2024-01-27 16:14:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:02,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262056846] [2024-01-27 16:14:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:02,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:02,180 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 16:14:02,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262056846] [2024-01-27 16:14:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262056846] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:02,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:02,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338970994] [2024-01-27 16:14:02,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:02,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:02,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:02,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:02,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 16:14:02,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:02,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:02,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:04,745 INFO L124 PetriNetUnfolderBase]: 21458/32229 cut-off events. [2024-01-27 16:14:04,745 INFO L125 PetriNetUnfolderBase]: For 16481/20282 co-relation queries the response was YES. [2024-01-27 16:14:04,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82386 conditions, 32229 events. 21458/32229 cut-off events. For 16481/20282 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 229963 event pairs, 2283 based on Foata normal form. 1366/32548 useless extension candidates. Maximal degree in co-relation 82369. Up to 11420 conditions per place. [2024-01-27 16:14:04,961 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 10 changer transitions 0/103 dead transitions. [2024-01-27 16:14:04,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 526 flow [2024-01-27 16:14:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:14:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:14:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-01-27 16:14:04,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2024-01-27 16:14:04,965 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 207 flow. Second operand 5 states and 181 transitions. [2024-01-27 16:14:04,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 526 flow [2024-01-27 16:14:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 103 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:14:04,969 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 272 flow [2024-01-27 16:14:04,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-01-27 16:14:04,971 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-01-27 16:14:04,972 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 272 flow [2024-01-27 16:14:04,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 16:14:04,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:04,977 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] [2024-01-27 16:14:04,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:14:04,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:04,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash -432317070, now seen corresponding path program 1 times [2024-01-27 16:14:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144171340] [2024-01-27 16:14:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:05,526 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 16:14:05,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144171340] [2024-01-27 16:14:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144171340] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:14:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34433908] [2024-01-27 16:14:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:14:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:14:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:14:05,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:14:05,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 16:14:05,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:05,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:14:05,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:09,325 INFO L124 PetriNetUnfolderBase]: 23264/38473 cut-off events. [2024-01-27 16:14:09,325 INFO L125 PetriNetUnfolderBase]: For 27898/36499 co-relation queries the response was YES. [2024-01-27 16:14:09,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100919 conditions, 38473 events. 23264/38473 cut-off events. For 27898/36499 co-relation queries the response was YES. Maximal size of possible extension queue 2221. Compared 341481 event pairs, 8599 based on Foata normal form. 604/35743 useless extension candidates. Maximal degree in co-relation 100899. Up to 17519 conditions per place. [2024-01-27 16:14:09,563 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 86 selfloop transitions, 20 changer transitions 10/149 dead transitions. [2024-01-27 16:14:09,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 149 transitions, 782 flow [2024-01-27 16:14:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:14:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:14:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 335 transitions. [2024-01-27 16:14:09,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-01-27 16:14:09,565 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 272 flow. Second operand 10 states and 335 transitions. [2024-01-27 16:14:09,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 149 transitions, 782 flow [2024-01-27 16:14:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 149 transitions, 767 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:09,576 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 432 flow [2024-01-27 16:14:09,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=432, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-01-27 16:14:09,576 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-01-27 16:14:09,577 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 432 flow [2024-01-27 16:14:09,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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 16:14:09,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:09,577 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] [2024-01-27 16:14:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:14:09,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:09,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash -68550766, now seen corresponding path program 2 times [2024-01-27 16:14:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:09,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980998825] [2024-01-27 16:14:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:09,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:09,752 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 16:14:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980998825] [2024-01-27 16:14:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980998825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:09,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:09,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080195528] [2024-01-27 16:14:09,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:09,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:09,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:09,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 16:14:09,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:09,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:09,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:14,153 INFO L124 PetriNetUnfolderBase]: 32332/47396 cut-off events. [2024-01-27 16:14:14,153 INFO L125 PetriNetUnfolderBase]: For 117325/125036 co-relation queries the response was YES. [2024-01-27 16:14:14,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167138 conditions, 47396 events. 32332/47396 cut-off events. For 117325/125036 co-relation queries the response was YES. Maximal size of possible extension queue 2108. Compared 340324 event pairs, 2239 based on Foata normal form. 1629/47205 useless extension candidates. Maximal degree in co-relation 167111. Up to 16544 conditions per place. [2024-01-27 16:14:14,498 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 125 selfloop transitions, 14 changer transitions 23/182 dead transitions. [2024-01-27 16:14:14,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 182 transitions, 1348 flow [2024-01-27 16:14:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:14:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:14:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-01-27 16:14:14,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-01-27 16:14:14,500 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 432 flow. Second operand 6 states and 219 transitions. [2024-01-27 16:14:14,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 182 transitions, 1348 flow [2024-01-27 16:14:14,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 182 transitions, 1346 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 16:14:14,552 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 451 flow [2024-01-27 16:14:14,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2024-01-27 16:14:14,553 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-01-27 16:14:14,553 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 451 flow [2024-01-27 16:14:14,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 16:14:14,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:14,553 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] [2024-01-27 16:14:14,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:14:14,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:14,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2084014449, now seen corresponding path program 1 times [2024-01-27 16:14:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:14,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993568487] [2024-01-27 16:14:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:15,321 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 16:14:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993568487] [2024-01-27 16:14:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993568487] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:15,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:15,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:14:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031189632] [2024-01-27 16:14:15,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:15,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:14:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:15,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:14:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:14:15,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:14:15,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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 16:14:15,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:15,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:14:15,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:18,524 INFO L124 PetriNetUnfolderBase]: 17140/29737 cut-off events. [2024-01-27 16:14:18,524 INFO L125 PetriNetUnfolderBase]: For 69987/81742 co-relation queries the response was YES. [2024-01-27 16:14:18,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101158 conditions, 29737 events. 17140/29737 cut-off events. For 69987/81742 co-relation queries the response was YES. Maximal size of possible extension queue 1868. Compared 270495 event pairs, 5336 based on Foata normal form. 1097/28010 useless extension candidates. Maximal degree in co-relation 101127. Up to 9942 conditions per place. [2024-01-27 16:14:18,756 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 76 selfloop transitions, 15 changer transitions 19/148 dead transitions. [2024-01-27 16:14:18,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 148 transitions, 1075 flow [2024-01-27 16:14:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-01-27 16:14:18,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-01-27 16:14:18,758 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 451 flow. Second operand 9 states and 295 transitions. [2024-01-27 16:14:18,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 148 transitions, 1075 flow [2024-01-27 16:14:19,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 148 transitions, 1022 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-01-27 16:14:19,038 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 528 flow [2024-01-27 16:14:19,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-01-27 16:14:19,039 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-01-27 16:14:19,039 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 528 flow [2024-01-27 16:14:19,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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 16:14:19,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:19,040 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] [2024-01-27 16:14:19,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:14:19,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:19,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:19,040 INFO L85 PathProgramCache]: Analyzing trace with hash -442966763, now seen corresponding path program 2 times [2024-01-27 16:14:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452904177] [2024-01-27 16:14:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:19,187 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 16:14:19,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452904177] [2024-01-27 16:14:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452904177] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121714001] [2024-01-27 16:14:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:19,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:14:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:14:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:14:19,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:19,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 528 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 16:14:19,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:19,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:19,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:23,786 INFO L124 PetriNetUnfolderBase]: 32238/47267 cut-off events. [2024-01-27 16:14:23,786 INFO L125 PetriNetUnfolderBase]: For 173993/182615 co-relation queries the response was YES. [2024-01-27 16:14:24,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185596 conditions, 47267 events. 32238/47267 cut-off events. For 173993/182615 co-relation queries the response was YES. Maximal size of possible extension queue 2110. Compared 341410 event pairs, 2362 based on Foata normal form. 839/46493 useless extension candidates. Maximal degree in co-relation 185563. Up to 17796 conditions per place. [2024-01-27 16:14:24,192 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 122 selfloop transitions, 18 changer transitions 11/171 dead transitions. [2024-01-27 16:14:24,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 171 transitions, 1406 flow [2024-01-27 16:14:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:14:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:14:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-27 16:14:24,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-01-27 16:14:24,194 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 528 flow. Second operand 7 states and 235 transitions. [2024-01-27 16:14:24,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 171 transitions, 1406 flow [2024-01-27 16:14:25,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 171 transitions, 1364 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-01-27 16:14:25,600 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 517 flow [2024-01-27 16:14:25,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-01-27 16:14:25,601 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-01-27 16:14:25,601 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 517 flow [2024-01-27 16:14:25,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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 16:14:25,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:25,601 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, 1] [2024-01-27 16:14:25,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:14:25,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:25,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1791103666, now seen corresponding path program 1 times [2024-01-27 16:14:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:25,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804736759] [2024-01-27 16:14:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:25,848 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 16:14:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:25,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804736759] [2024-01-27 16:14:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804736759] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:25,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:25,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:25,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133109693] [2024-01-27 16:14:25,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:25,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:25,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:25,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-01-27 16:14:25,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 16:14:25,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:25,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-01-27 16:14:25,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:29,817 INFO L124 PetriNetUnfolderBase]: 26265/42426 cut-off events. [2024-01-27 16:14:29,818 INFO L125 PetriNetUnfolderBase]: For 115573/125092 co-relation queries the response was YES. [2024-01-27 16:14:30,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153604 conditions, 42426 events. 26265/42426 cut-off events. For 115573/125092 co-relation queries the response was YES. Maximal size of possible extension queue 2958. Compared 375101 event pairs, 6878 based on Foata normal form. 716/38614 useless extension candidates. Maximal degree in co-relation 153574. Up to 20198 conditions per place. [2024-01-27 16:14:30,171 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 72 selfloop transitions, 8 changer transitions 22/131 dead transitions. [2024-01-27 16:14:30,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 1009 flow [2024-01-27 16:14:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:14:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:14:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-01-27 16:14:30,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766666666666667 [2024-01-27 16:14:30,173 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 517 flow. Second operand 6 states and 173 transitions. [2024-01-27 16:14:30,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 1009 flow