./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --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/weaver/chl-poker-hand-symm.wvr.c -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 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:28:36,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:28:36,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:28:36,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:28:36,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:28:36,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:28:36,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:28:36,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:28:36,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:28:36,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:28:36,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:28:36,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:28:36,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:28:36,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:28:36,446 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:28:36,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:28:36,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:28:36,446 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:28:36,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:28:36,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:28:36,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:28:36,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:28:36,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:28:36,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:28:36,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:28:36,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:28:36,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:28:36,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:28:36,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:28:36,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:28:36,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:28:36,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:28:36,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:28:36,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:28:36,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:28:36,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:28:36,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:28:36,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:28:36,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:28:36,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:28:36,452 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:28:36,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:28:36,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:28:36,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-01-27 15:28:36,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:28:36,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:28:36,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:28:36,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:28:36,651 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:28:36,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-01-27 15:28:37,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:28:37,859 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:28:37,860 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-01-27 15:28:37,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb5d20a4/e31e80face194306bee37ccc8a6787da/FLAGe2c8e24ca [2024-01-27 15:28:37,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb5d20a4/e31e80face194306bee37ccc8a6787da [2024-01-27 15:28:37,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:28:37,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:28:37,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:28:37,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:28:37,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:28:37,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:28:37" (1/1) ... [2024-01-27 15:28:37,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acb5ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:37, skipping insertion in model container [2024-01-27 15:28:37,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:28:37" (1/1) ... [2024-01-27 15:28:37,931 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:28:38,102 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-27 15:28:38,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:28:38,131 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:28:38,202 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-27 15:28:38,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:28:38,230 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:28:38,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38 WrapperNode [2024-01-27 15:28:38,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:28:38,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:28:38,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:28:38,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:28:38,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,333 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1555 [2024-01-27 15:28:38,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:28:38,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:28:38,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:28:38,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:28:38,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,396 INFO L175 MemorySlicer]: Split 190 memory accesses to 4 slices as follows [2, 2, 2, 184]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 10 writes are split as follows [0, 1, 1, 8]. [2024-01-27 15:28:38,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:28:38,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:28:38,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:28:38,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:28:38,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (1/1) ... [2024-01-27 15:28:38,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:28:38,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:38,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:28:38,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:28:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:28:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:28:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:28:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:28:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:28:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:28:38,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:28:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:28:38,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:28:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:28:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:28:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:28:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:28:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:28:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:28:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:28:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:28:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:28:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:28:38,545 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:28:38,707 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:28:38,709 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:28:39,755 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:28:39,756 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:28:40,872 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:28:40,873 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-01-27 15:28:40,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:28:40 BoogieIcfgContainer [2024-01-27 15:28:40,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:28:40,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:28:40,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:28:40,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:28:40,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:28:37" (1/3) ... [2024-01-27 15:28:40,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459b5f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:28:40, skipping insertion in model container [2024-01-27 15:28:40,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:28:38" (2/3) ... [2024-01-27 15:28:40,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459b5f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:28:40, skipping insertion in model container [2024-01-27 15:28:40,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:28:40" (3/3) ... [2024-01-27 15:28:40,882 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-01-27 15:28:40,890 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:28:40,898 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:28:40,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:28:40,898 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:28:41,121 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:28:41,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 95 transitions, 204 flow [2024-01-27 15:28:41,253 INFO L124 PetriNetUnfolderBase]: 28/93 cut-off events. [2024-01-27 15:28:41,253 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:28:41,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 28/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 247 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-01-27 15:28:41,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 95 transitions, 204 flow [2024-01-27 15:28:41,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 92 transitions, 196 flow [2024-01-27 15:28:41,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:28:41,270 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;@4426d28c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:28:41,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:28:41,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:28:41,300 INFO L124 PetriNetUnfolderBase]: 28/91 cut-off events. [2024-01-27 15:28:41,300 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:28:41,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:41,301 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 15:28:41,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:41,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash -757129655, now seen corresponding path program 1 times [2024-01-27 15:28:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:41,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321459629] [2024-01-27 15:28:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:28:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321459629] [2024-01-27 15:28:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321459629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:41,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:28:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:28:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538993508] [2024-01-27 15:28:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:41,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:28:41,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:41,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 92 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:41,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:41,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:41,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:42,864 INFO L124 PetriNetUnfolderBase]: 2193/3358 cut-off events. [2024-01-27 15:28:42,865 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-01-27 15:28:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6695 conditions, 3358 events. 2193/3358 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17125 event pairs, 1449 based on Foata normal form. 184/2786 useless extension candidates. Maximal degree in co-relation 6413. Up to 3261 conditions per place. [2024-01-27 15:28:42,882 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-01-27 15:28:42,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 370 flow [2024-01-27 15:28:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-27 15:28:42,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070175438596491 [2024-01-27 15:28:42,894 INFO L175 Difference]: Start difference. First operand has 71 places, 92 transitions, 196 flow. Second operand 3 states and 116 transitions. [2024-01-27 15:28:42,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 370 flow [2024-01-27 15:28:42,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:28:42,903 INFO L231 Difference]: Finished difference. Result has 70 places, 92 transitions, 222 flow [2024-01-27 15:28:42,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=92} [2024-01-27 15:28:42,908 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2024-01-27 15:28:42,908 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 92 transitions, 222 flow [2024-01-27 15:28:42,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:42,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:42,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:42,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:28:42,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:42,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1408613932, now seen corresponding path program 1 times [2024-01-27 15:28:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:42,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651722304] [2024-01-27 15:28:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:42,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:28:43,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651722304] [2024-01-27 15:28:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651722304] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:43,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:28:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:28:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596601296] [2024-01-27 15:28:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:43,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:28:43,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:43,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 92 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:43,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:43,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:43,746 INFO L124 PetriNetUnfolderBase]: 2193/3360 cut-off events. [2024-01-27 15:28:43,746 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-27 15:28:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 3360 events. 2193/3360 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17146 event pairs, 1449 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 6621. Up to 3265 conditions per place. [2024-01-27 15:28:43,758 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 85 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-01-27 15:28:43,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 404 flow [2024-01-27 15:28:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-01-27 15:28:43,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2024-01-27 15:28:43,760 INFO L175 Difference]: Start difference. First operand has 70 places, 92 transitions, 222 flow. Second operand 3 states and 108 transitions. [2024-01-27 15:28:43,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 404 flow [2024-01-27 15:28:43,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:43,762 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 236 flow [2024-01-27 15:28:43,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2024-01-27 15:28:43,763 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2024-01-27 15:28:43,763 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 236 flow [2024-01-27 15:28:43,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:43,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:43,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:28:43,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:43,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2096760260, now seen corresponding path program 1 times [2024-01-27 15:28:43,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423476369] [2024-01-27 15:28:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:43,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-27 15:28:43,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:43,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423476369] [2024-01-27 15:28:43,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423476369] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105964981] [2024-01-27 15:28:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:43,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:43,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:43,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:43,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:28:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:44,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:28:44,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-01-27 15:28:44,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:28:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105964981] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:44,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:28:44,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-01-27 15:28:44,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174267385] [2024-01-27 15:28:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:44,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:44,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:28:44,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:44,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:44,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:44,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:44,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:44,943 INFO L124 PetriNetUnfolderBase]: 2193/3362 cut-off events. [2024-01-27 15:28:44,943 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-27 15:28:44,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6680 conditions, 3362 events. 2193/3362 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17135 event pairs, 1449 based on Foata normal form. 1/2610 useless extension candidates. Maximal degree in co-relation 6623. Up to 3265 conditions per place. [2024-01-27 15:28:44,955 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 83 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-01-27 15:28:44,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 422 flow [2024-01-27 15:28:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-01-27 15:28:44,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2024-01-27 15:28:44,957 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 236 flow. Second operand 3 states and 110 transitions. [2024-01-27 15:28:44,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 422 flow [2024-01-27 15:28:44,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:44,960 INFO L231 Difference]: Finished difference. Result has 74 places, 96 transitions, 266 flow [2024-01-27 15:28:44,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=74, PETRI_TRANSITIONS=96} [2024-01-27 15:28:44,960 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-01-27 15:28:44,961 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 96 transitions, 266 flow [2024-01-27 15:28:44,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:44,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:44,961 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] [2024-01-27 15:28:44,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:28:45,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:45,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:45,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:45,175 INFO L85 PathProgramCache]: Analyzing trace with hash 539258706, now seen corresponding path program 1 times [2024-01-27 15:28:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055656990] [2024-01-27 15:28:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:45,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 15:28:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055656990] [2024-01-27 15:28:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055656990] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:45,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387656443] [2024-01-27 15:28:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:45,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:45,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:45,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:45,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:28:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:45,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:28:45,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 15:28:45,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:28:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 15:28:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387656443] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:28:45,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:28:45,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-01-27 15:28:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603872088] [2024-01-27 15:28:45,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:28:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:28:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:28:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:28:45,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:45,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:45,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:45,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:45,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:46,523 INFO L124 PetriNetUnfolderBase]: 2193/3386 cut-off events. [2024-01-27 15:28:46,524 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-01-27 15:28:46,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 3386 events. 2193/3386 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17129 event pairs, 1449 based on Foata normal form. 12/2646 useless extension candidates. Maximal degree in co-relation 6644. Up to 3261 conditions per place. [2024-01-27 15:28:46,537 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 75 selfloop transitions, 40 changer transitions 0/120 dead transitions. [2024-01-27 15:28:46,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 592 flow [2024-01-27 15:28:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:28:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:28:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-01-27 15:28:46,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565789473684211 [2024-01-27 15:28:46,539 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 266 flow. Second operand 8 states and 195 transitions. [2024-01-27 15:28:46,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 592 flow [2024-01-27 15:28:46,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:46,542 INFO L231 Difference]: Finished difference. Result has 83 places, 120 transitions, 496 flow [2024-01-27 15:28:46,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=496, PETRI_PLACES=83, PETRI_TRANSITIONS=120} [2024-01-27 15:28:46,543 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 12 predicate places. [2024-01-27 15:28:46,543 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 120 transitions, 496 flow [2024-01-27 15:28:46,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:46,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:46,544 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:46,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-01-27 15:28:46,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:46,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1613009607, now seen corresponding path program 2 times [2024-01-27 15:28:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105252550] [2024-01-27 15:28:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-27 15:28:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105252550] [2024-01-27 15:28:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105252550] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:47,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044597891] [2024-01-27 15:28:47,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:28:47,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:47,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:47,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:28:47,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:28:47,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:28:47,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:28:47,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:47,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:28:47,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-01-27 15:28:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-01-27 15:28:47,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:28:47,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044597891] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:47,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:28:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-01-27 15:28:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692388320] [2024-01-27 15:28:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:28:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:28:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:28:47,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:47,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 120 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:47,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:47,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:48,569 INFO L124 PetriNetUnfolderBase]: 3307/5204 cut-off events. [2024-01-27 15:28:48,569 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:28:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10347 conditions, 5204 events. 3307/5204 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29358 event pairs, 1167 based on Foata normal form. 1/4097 useless extension candidates. Maximal degree in co-relation 10173. Up to 2481 conditions per place. [2024-01-27 15:28:48,588 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 185 selfloop transitions, 22 changer transitions 10/222 dead transitions. [2024-01-27 15:28:48,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 222 transitions, 1140 flow [2024-01-27 15:28:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:28:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:28:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 222 transitions. [2024-01-27 15:28:48,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673684210526316 [2024-01-27 15:28:48,590 INFO L175 Difference]: Start difference. First operand has 83 places, 120 transitions, 496 flow. Second operand 5 states and 222 transitions. [2024-01-27 15:28:48,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 222 transitions, 1140 flow [2024-01-27 15:28:48,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 222 transitions, 1044 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-01-27 15:28:48,594 INFO L231 Difference]: Finished difference. Result has 86 places, 138 transitions, 543 flow [2024-01-27 15:28:48,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=543, PETRI_PLACES=86, PETRI_TRANSITIONS=138} [2024-01-27 15:28:48,595 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2024-01-27 15:28:48,595 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 138 transitions, 543 flow [2024-01-27 15:28:48,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:48,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:48,596 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:48,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:48,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:48,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1529072303, now seen corresponding path program 3 times [2024-01-27 15:28:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741369535] [2024-01-27 15:28:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-27 15:28:49,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741369535] [2024-01-27 15:28:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741369535] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491953768] [2024-01-27 15:28:49,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:28:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:49,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:49,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:28:49,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:28:49,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:28:49,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:28:49,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:49,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:28:49,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2024-01-27 15:28:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-01-27 15:28:49,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:28:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491953768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:49,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:28:49,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-01-27 15:28:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343501521] [2024-01-27 15:28:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:49,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:28:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:28:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:28:49,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:49,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 138 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:49,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:49,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:49,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:50,749 INFO L124 PetriNetUnfolderBase]: 3413/5405 cut-off events. [2024-01-27 15:28:50,750 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-01-27 15:28:50,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12836 conditions, 5405 events. 3413/5405 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31127 event pairs, 1175 based on Foata normal form. 1/4264 useless extension candidates. Maximal degree in co-relation 12804. Up to 2783 conditions per place. [2024-01-27 15:28:50,767 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 183 selfloop transitions, 22 changer transitions 10/220 dead transitions. [2024-01-27 15:28:50,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 220 transitions, 1164 flow [2024-01-27 15:28:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:28:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:28:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2024-01-27 15:28:50,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-01-27 15:28:50,768 INFO L175 Difference]: Start difference. First operand has 86 places, 138 transitions, 543 flow. Second operand 5 states and 220 transitions. [2024-01-27 15:28:50,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 220 transitions, 1164 flow [2024-01-27 15:28:50,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 220 transitions, 1156 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:50,778 INFO L231 Difference]: Finished difference. Result has 91 places, 138 transitions, 593 flow [2024-01-27 15:28:50,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=91, PETRI_TRANSITIONS=138} [2024-01-27 15:28:50,779 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2024-01-27 15:28:50,779 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 138 transitions, 593 flow [2024-01-27 15:28:50,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:50,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:50,779 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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 15:28:50,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-27 15:28:50,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:50,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:50,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2102513933, now seen corresponding path program 1 times [2024-01-27 15:28:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:50,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772979382] [2024-01-27 15:28:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:50,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-27 15:28:51,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:51,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772979382] [2024-01-27 15:28:51,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772979382] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226863468] [2024-01-27 15:28:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:51,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:51,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:51,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:51,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:28:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:51,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:28:51,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-27 15:28:51,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:28:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-01-27 15:28:51,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226863468] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:28:51,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:28:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-27 15:28:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497719950] [2024-01-27 15:28:51,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:28:51,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 15:28:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 15:28:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-01-27 15:28:51,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:51,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 138 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:51,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:51,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:51,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:52,756 INFO L124 PetriNetUnfolderBase]: 3399/5370 cut-off events. [2024-01-27 15:28:52,756 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-01-27 15:28:52,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13585 conditions, 5370 events. 3399/5370 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30609 event pairs, 2343 based on Foata normal form. 1/4223 useless extension candidates. Maximal degree in co-relation 13550. Up to 5119 conditions per place. [2024-01-27 15:28:52,777 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 93 selfloop transitions, 44 changer transitions 0/142 dead transitions. [2024-01-27 15:28:52,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 142 transitions, 887 flow [2024-01-27 15:28:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:28:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:28:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-01-27 15:28:52,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19138755980861244 [2024-01-27 15:28:52,779 INFO L175 Difference]: Start difference. First operand has 91 places, 138 transitions, 593 flow. Second operand 11 states and 200 transitions. [2024-01-27 15:28:52,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 142 transitions, 887 flow [2024-01-27 15:28:52,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 142 transitions, 862 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-27 15:28:52,790 INFO L231 Difference]: Finished difference. Result has 99 places, 142 transitions, 694 flow [2024-01-27 15:28:52,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=694, PETRI_PLACES=99, PETRI_TRANSITIONS=142} [2024-01-27 15:28:52,791 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 28 predicate places. [2024-01-27 15:28:52,791 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 142 transitions, 694 flow [2024-01-27 15:28:52,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:52,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:52,792 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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 15:28:52,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:53,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:53,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:53,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:53,005 INFO L85 PathProgramCache]: Analyzing trace with hash -918468135, now seen corresponding path program 2 times [2024-01-27 15:28:53,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:53,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769190823] [2024-01-27 15:28:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:53,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-27 15:28:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769190823] [2024-01-27 15:28:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769190823] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631956512] [2024-01-27 15:28:53,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:28:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:53,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:53,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 15:28:53,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:28:53,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:28:53,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:28:53,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-01-27 15:28:53,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:28:53,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631956512] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:53,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:28:53,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-01-27 15:28:53,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864095889] [2024-01-27 15:28:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:53,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:53,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:28:53,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 142 transitions, 694 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:53,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:54,815 INFO L124 PetriNetUnfolderBase]: 3523/5733 cut-off events. [2024-01-27 15:28:54,815 INFO L125 PetriNetUnfolderBase]: For 1140/1140 co-relation queries the response was YES. [2024-01-27 15:28:54,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14138 conditions, 5733 events. 3523/5733 cut-off events. For 1140/1140 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 34240 event pairs, 929 based on Foata normal form. 58/4607 useless extension candidates. Maximal degree in co-relation 13892. Up to 4057 conditions per place. [2024-01-27 15:28:54,834 INFO L140 encePairwiseOnDemand]: 79/95 looper letters, 164 selfloop transitions, 20 changer transitions 2/191 dead transitions. [2024-01-27 15:28:54,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1200 flow [2024-01-27 15:28:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-27 15:28:54,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-27 15:28:54,835 INFO L175 Difference]: Start difference. First operand has 99 places, 142 transitions, 694 flow. Second operand 3 states and 152 transitions. [2024-01-27 15:28:54,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1200 flow [2024-01-27 15:28:54,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 191 transitions, 1124 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-27 15:28:54,843 INFO L231 Difference]: Finished difference. Result has 97 places, 158 transitions, 804 flow [2024-01-27 15:28:54,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=97, PETRI_TRANSITIONS=158} [2024-01-27 15:28:54,844 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-01-27 15:28:54,844 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 158 transitions, 804 flow [2024-01-27 15:28:54,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:54,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:54,845 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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 15:28:54,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:55,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:55,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1049247705, now seen corresponding path program 3 times [2024-01-27 15:28:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411468216] [2024-01-27 15:28:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-27 15:28:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411468216] [2024-01-27 15:28:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411468216] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662685262] [2024-01-27 15:28:55,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:28:55,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:55,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:55,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-27 15:28:55,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:28:55,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:28:55,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:28:55,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-01-27 15:28:55,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:28:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662685262] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:55,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:28:55,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-01-27 15:28:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419751237] [2024-01-27 15:28:55,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:55,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:55,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:28:55,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:55,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 158 transitions, 804 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:55,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:55,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:56,850 INFO L124 PetriNetUnfolderBase]: 3473/5584 cut-off events. [2024-01-27 15:28:56,850 INFO L125 PetriNetUnfolderBase]: For 2784/2784 co-relation queries the response was YES. [2024-01-27 15:28:56,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14995 conditions, 5584 events. 3473/5584 cut-off events. For 2784/2784 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 32771 event pairs, 2289 based on Foata normal form. 50/4440 useless extension candidates. Maximal degree in co-relation 14781. Up to 5039 conditions per place. [2024-01-27 15:28:56,868 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 143 selfloop transitions, 0 changer transitions 37/185 dead transitions. [2024-01-27 15:28:56,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 185 transitions, 1184 flow [2024-01-27 15:28:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-01-27 15:28:56,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-01-27 15:28:56,870 INFO L175 Difference]: Start difference. First operand has 97 places, 158 transitions, 804 flow. Second operand 3 states and 147 transitions. [2024-01-27 15:28:56,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 185 transitions, 1184 flow [2024-01-27 15:28:56,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 185 transitions, 1156 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:28:56,885 INFO L231 Difference]: Finished difference. Result has 98 places, 148 transitions, 714 flow [2024-01-27 15:28:56,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=714, PETRI_PLACES=98, PETRI_TRANSITIONS=148} [2024-01-27 15:28:56,885 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 27 predicate places. [2024-01-27 15:28:56,885 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 148 transitions, 714 flow [2024-01-27 15:28:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:56,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:56,886 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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 15:28:56,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:57,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:57,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:57,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash -792678275, now seen corresponding path program 1 times [2024-01-27 15:28:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936033608] [2024-01-27 15:28:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-01-27 15:28:57,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:57,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936033608] [2024-01-27 15:28:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936033608] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:57,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:28:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:28:57,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689974863] [2024-01-27 15:28:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:28:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:28:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:28:57,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:57,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 148 transitions, 714 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:57,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:57,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:57,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:58,670 INFO L124 PetriNetUnfolderBase]: 3432/5594 cut-off events. [2024-01-27 15:28:58,670 INFO L125 PetriNetUnfolderBase]: For 1890/1890 co-relation queries the response was YES. [2024-01-27 15:28:58,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14565 conditions, 5594 events. 3432/5594 cut-off events. For 1890/1890 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33347 event pairs, 1590 based on Foata normal form. 3/4537 useless extension candidates. Maximal degree in co-relation 14548. Up to 2852 conditions per place. [2024-01-27 15:28:58,688 INFO L140 encePairwiseOnDemand]: 81/95 looper letters, 167 selfloop transitions, 31 changer transitions 5/208 dead transitions. [2024-01-27 15:28:58,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 208 transitions, 1303 flow [2024-01-27 15:28:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-01-27 15:28:58,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649122807017544 [2024-01-27 15:28:58,689 INFO L175 Difference]: Start difference. First operand has 98 places, 148 transitions, 714 flow. Second operand 3 states and 161 transitions. [2024-01-27 15:28:58,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 208 transitions, 1303 flow [2024-01-27 15:28:58,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 208 transitions, 1295 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:58,700 INFO L231 Difference]: Finished difference. Result has 97 places, 160 transitions, 885 flow [2024-01-27 15:28:58,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=885, PETRI_PLACES=97, PETRI_TRANSITIONS=160} [2024-01-27 15:28:58,700 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-01-27 15:28:58,700 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 160 transitions, 885 flow [2024-01-27 15:28:58,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:58,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:58,701 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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 15:28:58,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:28:58,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:28:58,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1040130693, now seen corresponding path program 1 times [2024-01-27 15:28:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:58,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999028138] [2024-01-27 15:28:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-27 15:28:58,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999028138] [2024-01-27 15:28:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999028138] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214342036] [2024-01-27 15:28:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:58,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:58,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:58,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:58,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-27 15:28:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:59,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:28:59,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-27 15:28:59,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:28:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-27 15:28:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214342036] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:28:59,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:28:59,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-01-27 15:28:59,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663703341] [2024-01-27 15:28:59,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:28:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-27 15:28:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-27 15:28:59,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2024-01-27 15:28:59,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:28:59,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 160 transitions, 885 flow. Second operand has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:59,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:59,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:28:59,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:00,619 INFO L124 PetriNetUnfolderBase]: 3432/5574 cut-off events. [2024-01-27 15:29:00,619 INFO L125 PetriNetUnfolderBase]: For 3428/3428 co-relation queries the response was YES. [2024-01-27 15:29:00,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16070 conditions, 5574 events. 3432/5574 cut-off events. For 3428/3428 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 33057 event pairs, 2450 based on Foata normal form. 14/4528 useless extension candidates. Maximal degree in co-relation 16052. Up to 5321 conditions per place. [2024-01-27 15:29:00,638 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 111 selfloop transitions, 58 changer transitions 0/174 dead transitions. [2024-01-27 15:29:00,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1335 flow [2024-01-27 15:29:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:29:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:29:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 241 transitions. [2024-01-27 15:29:00,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.181203007518797 [2024-01-27 15:29:00,640 INFO L175 Difference]: Start difference. First operand has 97 places, 160 transitions, 885 flow. Second operand 14 states and 241 transitions. [2024-01-27 15:29:00,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1335 flow [2024-01-27 15:29:00,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 174 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:00,653 INFO L231 Difference]: Finished difference. Result has 116 places, 174 transitions, 1180 flow [2024-01-27 15:29:00,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1180, PETRI_PLACES=116, PETRI_TRANSITIONS=174} [2024-01-27 15:29:00,654 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 45 predicate places. [2024-01-27 15:29:00,654 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 174 transitions, 1180 flow [2024-01-27 15:29:00,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:00,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:00,654 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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 15:29:00,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:00,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-27 15:29:00,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:00,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1824652107, now seen corresponding path program 2 times [2024-01-27 15:29:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171416912] [2024-01-27 15:29:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:00,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-27 15:29:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171416912] [2024-01-27 15:29:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171416912] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577501038] [2024-01-27 15:29:01,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:01,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:01,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:01,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-27 15:29:01,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:01,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:01,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:29:01,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-01-27 15:29:01,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577501038] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:01,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-01-27 15:29:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785172604] [2024-01-27 15:29:01,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:01,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:01,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-01-27 15:29:01,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:01,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 174 transitions, 1180 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:01,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:01,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:01,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:03,101 INFO L124 PetriNetUnfolderBase]: 3452/5867 cut-off events. [2024-01-27 15:29:03,101 INFO L125 PetriNetUnfolderBase]: For 3747/3747 co-relation queries the response was YES. [2024-01-27 15:29:03,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15654 conditions, 5867 events. 3452/5867 cut-off events. For 3747/3747 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37081 event pairs, 1608 based on Foata normal form. 220/4973 useless extension candidates. Maximal degree in co-relation 15629. Up to 3176 conditions per place. [2024-01-27 15:29:03,124 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 196 selfloop transitions, 4 changer transitions 20/225 dead transitions. [2024-01-27 15:29:03,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 225 transitions, 1787 flow [2024-01-27 15:29:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-01-27 15:29:03,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-01-27 15:29:03,126 INFO L175 Difference]: Start difference. First operand has 116 places, 174 transitions, 1180 flow. Second operand 3 states and 153 transitions. [2024-01-27 15:29:03,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 225 transitions, 1787 flow [2024-01-27 15:29:03,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 225 transitions, 1707 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:03,141 INFO L231 Difference]: Finished difference. Result has 118 places, 176 transitions, 1176 flow [2024-01-27 15:29:03,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1176, PETRI_PLACES=118, PETRI_TRANSITIONS=176} [2024-01-27 15:29:03,142 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2024-01-27 15:29:03,142 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 176 transitions, 1176 flow [2024-01-27 15:29:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:03,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:03,142 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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 15:29:03,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:03,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:03,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1444583237, now seen corresponding path program 3 times [2024-01-27 15:29:03,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:03,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409693354] [2024-01-27 15:29:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-27 15:29:03,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:03,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409693354] [2024-01-27 15:29:03,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409693354] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:03,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598723740] [2024-01-27 15:29:03,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:03,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:03,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:03,777 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:03,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-27 15:29:04,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:29:04,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:04,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:29:04,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-01-27 15:29:04,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598723740] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:04,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:04,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-01-27 15:29:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781802157] [2024-01-27 15:29:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:04,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-01-27 15:29:04,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:04,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 176 transitions, 1176 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:04,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:04,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:04,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:05,311 INFO L124 PetriNetUnfolderBase]: 3068/5170 cut-off events. [2024-01-27 15:29:05,311 INFO L125 PetriNetUnfolderBase]: For 3796/3796 co-relation queries the response was YES. [2024-01-27 15:29:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14200 conditions, 5170 events. 3068/5170 cut-off events. For 3796/3796 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31394 event pairs, 1554 based on Foata normal form. 44/4184 useless extension candidates. Maximal degree in co-relation 14174. Up to 2703 conditions per place. [2024-01-27 15:29:05,334 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 190 selfloop transitions, 10 changer transitions 2/207 dead transitions. [2024-01-27 15:29:05,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 207 transitions, 1635 flow [2024-01-27 15:29:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-01-27 15:29:05,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-01-27 15:29:05,337 INFO L175 Difference]: Start difference. First operand has 118 places, 176 transitions, 1176 flow. Second operand 3 states and 145 transitions. [2024-01-27 15:29:05,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 207 transitions, 1635 flow [2024-01-27 15:29:05,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 207 transitions, 1629 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:05,350 INFO L231 Difference]: Finished difference. Result has 119 places, 174 transitions, 1174 flow [2024-01-27 15:29:05,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1174, PETRI_PLACES=119, PETRI_TRANSITIONS=174} [2024-01-27 15:29:05,351 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 48 predicate places. [2024-01-27 15:29:05,351 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 174 transitions, 1174 flow [2024-01-27 15:29:05,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:05,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:05,352 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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 15:29:05,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-27 15:29:05,568 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:05,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash 232863245, now seen corresponding path program 1 times [2024-01-27 15:29:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686159153] [2024-01-27 15:29:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:05,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-27 15:29:05,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686159153] [2024-01-27 15:29:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686159153] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:05,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216761089] [2024-01-27 15:29:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:05,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:05,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:05,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:05,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-27 15:29:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:06,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-27 15:29:06,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-27 15:29:06,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-01-27 15:29:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216761089] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:29:06,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:29:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-01-27 15:29:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794996223] [2024-01-27 15:29:06,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:29:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-27 15:29:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-27 15:29:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2024-01-27 15:29:06,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:06,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 174 transitions, 1174 flow. Second operand has 29 states, 29 states have (on average 9.275862068965518) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:06,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:06,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:06,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:07,877 INFO L124 PetriNetUnfolderBase]: 3068/5147 cut-off events. [2024-01-27 15:29:07,878 INFO L125 PetriNetUnfolderBase]: For 4181/4181 co-relation queries the response was YES. [2024-01-27 15:29:07,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14413 conditions, 5147 events. 3068/5147 cut-off events. For 4181/4181 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31004 event pairs, 2428 based on Foata normal form. 2/4117 useless extension candidates. Maximal degree in co-relation 14387. Up to 4917 conditions per place. [2024-01-27 15:29:07,896 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 111 selfloop transitions, 60 changer transitions 0/176 dead transitions. [2024-01-27 15:29:07,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 176 transitions, 1536 flow [2024-01-27 15:29:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-27 15:29:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-27 15:29:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 273 transitions. [2024-01-27 15:29:07,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1436842105263158 [2024-01-27 15:29:07,898 INFO L175 Difference]: Start difference. First operand has 119 places, 174 transitions, 1174 flow. Second operand 20 states and 273 transitions. [2024-01-27 15:29:07,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 176 transitions, 1536 flow [2024-01-27 15:29:07,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 1526 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:07,912 INFO L231 Difference]: Finished difference. Result has 138 places, 176 transitions, 1314 flow [2024-01-27 15:29:07,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1314, PETRI_PLACES=138, PETRI_TRANSITIONS=176} [2024-01-27 15:29:07,913 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 67 predicate places. [2024-01-27 15:29:07,913 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 176 transitions, 1314 flow [2024-01-27 15:29:07,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.275862068965518) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:07,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:07,913 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:07,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:08,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-27 15:29:08,128 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:08,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1829076989, now seen corresponding path program 2 times [2024-01-27 15:29:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:08,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062885374] [2024-01-27 15:29:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062885374] [2024-01-27 15:29:08,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062885374] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:08,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:08,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206089222] [2024-01-27 15:29:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:08,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:08,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 176 transitions, 1314 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:08,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:08,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:08,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:09,620 INFO L124 PetriNetUnfolderBase]: 3208/5430 cut-off events. [2024-01-27 15:29:09,620 INFO L125 PetriNetUnfolderBase]: For 3592/3592 co-relation queries the response was YES. [2024-01-27 15:29:09,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15167 conditions, 5430 events. 3208/5430 cut-off events. For 3592/3592 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33523 event pairs, 2436 based on Foata normal form. 7/4369 useless extension candidates. Maximal degree in co-relation 15140. Up to 4921 conditions per place. [2024-01-27 15:29:09,641 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 192 selfloop transitions, 4 changer transitions 10/211 dead transitions. [2024-01-27 15:29:09,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 211 transitions, 1844 flow [2024-01-27 15:29:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-01-27 15:29:09,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2024-01-27 15:29:09,645 INFO L175 Difference]: Start difference. First operand has 138 places, 176 transitions, 1314 flow. Second operand 4 states and 144 transitions. [2024-01-27 15:29:09,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 211 transitions, 1844 flow [2024-01-27 15:29:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 211 transitions, 1696 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-01-27 15:29:09,662 INFO L231 Difference]: Finished difference. Result has 130 places, 176 transitions, 1184 flow [2024-01-27 15:29:09,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1184, PETRI_PLACES=130, PETRI_TRANSITIONS=176} [2024-01-27 15:29:09,663 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 59 predicate places. [2024-01-27 15:29:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 176 transitions, 1184 flow [2024-01-27 15:29:09,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:09,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:09,663 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:09,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:29:09,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:09,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash 89349149, now seen corresponding path program 3 times [2024-01-27 15:29:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:09,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575011068] [2024-01-27 15:29:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:10,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575011068] [2024-01-27 15:29:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575011068] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888971151] [2024-01-27 15:29:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:10,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:10,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:10,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 176 transitions, 1184 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:10,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:10,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:10,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:11,157 INFO L124 PetriNetUnfolderBase]: 3298/5634 cut-off events. [2024-01-27 15:29:11,157 INFO L125 PetriNetUnfolderBase]: For 4180/4180 co-relation queries the response was YES. [2024-01-27 15:29:11,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15640 conditions, 5634 events. 3298/5634 cut-off events. For 4180/4180 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 35526 event pairs, 1078 based on Foata normal form. 1/4543 useless extension candidates. Maximal degree in co-relation 15610. Up to 3392 conditions per place. [2024-01-27 15:29:11,182 INFO L140 encePairwiseOnDemand]: 76/95 looper letters, 207 selfloop transitions, 28 changer transitions 9/249 dead transitions. [2024-01-27 15:29:11,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 249 transitions, 1887 flow [2024-01-27 15:29:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-01-27 15:29:11,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-01-27 15:29:11,183 INFO L175 Difference]: Start difference. First operand has 130 places, 176 transitions, 1184 flow. Second operand 5 states and 205 transitions. [2024-01-27 15:29:11,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 249 transitions, 1887 flow [2024-01-27 15:29:11,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 249 transitions, 1878 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:11,202 INFO L231 Difference]: Finished difference. Result has 133 places, 176 transitions, 1244 flow [2024-01-27 15:29:11,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1244, PETRI_PLACES=133, PETRI_TRANSITIONS=176} [2024-01-27 15:29:11,203 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 62 predicate places. [2024-01-27 15:29:11,203 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 176 transitions, 1244 flow [2024-01-27 15:29:11,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:11,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:11,203 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:29:11,204 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:11,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -776373455, now seen corresponding path program 1 times [2024-01-27 15:29:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:11,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989361203] [2024-01-27 15:29:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:11,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:11,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989361203] [2024-01-27 15:29:11,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989361203] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:11,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335964547] [2024-01-27 15:29:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:11,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:11,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:11,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 176 transitions, 1244 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:11,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:11,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:11,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:13,006 INFO L124 PetriNetUnfolderBase]: 3390/5921 cut-off events. [2024-01-27 15:29:13,007 INFO L125 PetriNetUnfolderBase]: For 6265/6265 co-relation queries the response was YES. [2024-01-27 15:29:13,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16534 conditions, 5921 events. 3390/5921 cut-off events. For 6265/6265 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 38376 event pairs, 1898 based on Foata normal form. 88/4869 useless extension candidates. Maximal degree in co-relation 16503. Up to 3415 conditions per place. [2024-01-27 15:29:13,037 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 183 selfloop transitions, 16 changer transitions 7/211 dead transitions. [2024-01-27 15:29:13,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 211 transitions, 1738 flow [2024-01-27 15:29:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-01-27 15:29:13,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2024-01-27 15:29:13,038 INFO L175 Difference]: Start difference. First operand has 133 places, 176 transitions, 1244 flow. Second operand 3 states and 143 transitions. [2024-01-27 15:29:13,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 211 transitions, 1738 flow [2024-01-27 15:29:13,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 211 transitions, 1709 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:13,062 INFO L231 Difference]: Finished difference. Result has 134 places, 178 transitions, 1310 flow [2024-01-27 15:29:13,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1310, PETRI_PLACES=134, PETRI_TRANSITIONS=178} [2024-01-27 15:29:13,062 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2024-01-27 15:29:13,062 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 178 transitions, 1310 flow [2024-01-27 15:29:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:13,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:13,063 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:29:13,063 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:13,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1575123569, now seen corresponding path program 2 times [2024-01-27 15:29:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425832752] [2024-01-27 15:29:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:13,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:13,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425832752] [2024-01-27 15:29:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425832752] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:13,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:13,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386887894] [2024-01-27 15:29:13,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:13,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:13,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:13,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 178 transitions, 1310 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:13,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:13,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:13,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:14,733 INFO L124 PetriNetUnfolderBase]: 3226/5588 cut-off events. [2024-01-27 15:29:14,733 INFO L125 PetriNetUnfolderBase]: For 6168/6168 co-relation queries the response was YES. [2024-01-27 15:29:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16018 conditions, 5588 events. 3226/5588 cut-off events. For 6168/6168 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 35742 event pairs, 2420 based on Foata normal form. 60/4526 useless extension candidates. Maximal degree in co-relation 15986. Up to 4697 conditions per place. [2024-01-27 15:29:14,757 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 180 selfloop transitions, 4 changer transitions 8/197 dead transitions. [2024-01-27 15:29:14,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 197 transitions, 1593 flow [2024-01-27 15:29:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-01-27 15:29:14,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2024-01-27 15:29:14,761 INFO L175 Difference]: Start difference. First operand has 134 places, 178 transitions, 1310 flow. Second operand 3 states and 143 transitions. [2024-01-27 15:29:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 197 transitions, 1593 flow [2024-01-27 15:29:14,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 197 transitions, 1587 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:14,780 INFO L231 Difference]: Finished difference. Result has 135 places, 164 transitions, 1140 flow [2024-01-27 15:29:14,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1140, PETRI_PLACES=135, PETRI_TRANSITIONS=164} [2024-01-27 15:29:14,781 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2024-01-27 15:29:14,781 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 164 transitions, 1140 flow [2024-01-27 15:29:14,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:14,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:14,781 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:14,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:29:14,781 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:14,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1834024394, now seen corresponding path program 1 times [2024-01-27 15:29:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:14,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415910910] [2024-01-27 15:29:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:15,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415910910] [2024-01-27 15:29:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415910910] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:15,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:15,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938593536] [2024-01-27 15:29:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:15,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:15,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:15,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 164 transitions, 1140 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:15,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:15,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:15,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:16,512 INFO L124 PetriNetUnfolderBase]: 3406/5977 cut-off events. [2024-01-27 15:29:16,513 INFO L125 PetriNetUnfolderBase]: For 5170/5170 co-relation queries the response was YES. [2024-01-27 15:29:16,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16956 conditions, 5977 events. 3406/5977 cut-off events. For 5170/5170 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 39506 event pairs, 2588 based on Foata normal form. 30/4825 useless extension candidates. Maximal degree in co-relation 16924. Up to 4939 conditions per place. [2024-01-27 15:29:16,532 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 179 selfloop transitions, 8 changer transitions 13/205 dead transitions. [2024-01-27 15:29:16,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 205 transitions, 1647 flow [2024-01-27 15:29:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-01-27 15:29:16,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228070175438596 [2024-01-27 15:29:16,533 INFO L175 Difference]: Start difference. First operand has 135 places, 164 transitions, 1140 flow. Second operand 3 states and 149 transitions. [2024-01-27 15:29:16,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 205 transitions, 1647 flow [2024-01-27 15:29:16,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 205 transitions, 1643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:16,551 INFO L231 Difference]: Finished difference. Result has 138 places, 162 transitions, 1160 flow [2024-01-27 15:29:16,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1160, PETRI_PLACES=138, PETRI_TRANSITIONS=162} [2024-01-27 15:29:16,552 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 67 predicate places. [2024-01-27 15:29:16,552 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 162 transitions, 1160 flow [2024-01-27 15:29:16,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:16,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:16,552 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:16,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-27 15:29:16,553 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:16,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:16,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1778453820, now seen corresponding path program 2 times [2024-01-27 15:29:16,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:16,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520374313] [2024-01-27 15:29:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:16,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:17,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520374313] [2024-01-27 15:29:17,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520374313] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:17,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:17,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:17,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10850236] [2024-01-27 15:29:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:17,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:17,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:17,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:17,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 162 transitions, 1160 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:17,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:17,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:18,135 INFO L124 PetriNetUnfolderBase]: 3112/5484 cut-off events. [2024-01-27 15:29:18,135 INFO L125 PetriNetUnfolderBase]: For 5674/5674 co-relation queries the response was YES. [2024-01-27 15:29:18,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15414 conditions, 5484 events. 3112/5484 cut-off events. For 5674/5674 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 35841 event pairs, 1734 based on Foata normal form. 54/4418 useless extension candidates. Maximal degree in co-relation 15381. Up to 3045 conditions per place. [2024-01-27 15:29:18,153 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 169 selfloop transitions, 5 changer transitions 10/189 dead transitions. [2024-01-27 15:29:18,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 189 transitions, 1501 flow [2024-01-27 15:29:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:18,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-01-27 15:29:18,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-01-27 15:29:18,154 INFO L175 Difference]: Start difference. First operand has 138 places, 162 transitions, 1160 flow. Second operand 3 states and 141 transitions. [2024-01-27 15:29:18,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 189 transitions, 1501 flow [2024-01-27 15:29:18,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 189 transitions, 1449 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:18,170 INFO L231 Difference]: Finished difference. Result has 135 places, 153 transitions, 1001 flow [2024-01-27 15:29:18,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1001, PETRI_PLACES=135, PETRI_TRANSITIONS=153} [2024-01-27 15:29:18,170 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2024-01-27 15:29:18,170 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 153 transitions, 1001 flow [2024-01-27 15:29:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:18,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:18,171 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:29:18,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:18,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -139242315, now seen corresponding path program 1 times [2024-01-27 15:29:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372941027] [2024-01-27 15:29:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:18,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372941027] [2024-01-27 15:29:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372941027] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:18,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:18,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795385720] [2024-01-27 15:29:18,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:18,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:18,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:18,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:18,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 153 transitions, 1001 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:18,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:18,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:18,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:19,093 INFO L124 PetriNetUnfolderBase]: 2713/4809 cut-off events. [2024-01-27 15:29:19,093 INFO L125 PetriNetUnfolderBase]: For 3898/3898 co-relation queries the response was YES. [2024-01-27 15:29:19,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 4809 events. 2713/4809 cut-off events. For 3898/3898 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 30674 event pairs, 1783 based on Foata normal form. 34/3947 useless extension candidates. Maximal degree in co-relation 12579. Up to 3215 conditions per place. [2024-01-27 15:29:19,111 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 156 selfloop transitions, 5 changer transitions 15/181 dead transitions. [2024-01-27 15:29:19,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 181 transitions, 1368 flow [2024-01-27 15:29:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-01-27 15:29:19,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45964912280701753 [2024-01-27 15:29:19,112 INFO L175 Difference]: Start difference. First operand has 135 places, 153 transitions, 1001 flow. Second operand 3 states and 131 transitions. [2024-01-27 15:29:19,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 181 transitions, 1368 flow [2024-01-27 15:29:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 181 transitions, 1335 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:19,123 INFO L231 Difference]: Finished difference. Result has 131 places, 149 transitions, 931 flow [2024-01-27 15:29:19,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=931, PETRI_PLACES=131, PETRI_TRANSITIONS=149} [2024-01-27 15:29:19,123 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 60 predicate places. [2024-01-27 15:29:19,123 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 149 transitions, 931 flow [2024-01-27 15:29:19,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:19,123 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:29:19,124 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:19,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1906824071, now seen corresponding path program 2 times [2024-01-27 15:29:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280732219] [2024-01-27 15:29:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280732219] [2024-01-27 15:29:19,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280732219] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:19,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:19,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102032391] [2024-01-27 15:29:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:19,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:19,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:19,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 931 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:19,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:19,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:19,973 INFO L124 PetriNetUnfolderBase]: 2573/4536 cut-off events. [2024-01-27 15:29:19,973 INFO L125 PetriNetUnfolderBase]: For 2353/2353 co-relation queries the response was YES. [2024-01-27 15:29:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11653 conditions, 4536 events. 2573/4536 cut-off events. For 2353/2353 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28451 event pairs, 2229 based on Foata normal form. 4/3736 useless extension candidates. Maximal degree in co-relation 11625. Up to 4266 conditions per place. [2024-01-27 15:29:19,988 INFO L140 encePairwiseOnDemand]: 93/95 looper letters, 141 selfloop transitions, 0 changer transitions 14/160 dead transitions. [2024-01-27 15:29:19,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 160 transitions, 1256 flow [2024-01-27 15:29:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-01-27 15:29:19,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37543859649122807 [2024-01-27 15:29:19,989 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 931 flow. Second operand 3 states and 107 transitions. [2024-01-27 15:29:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 160 transitions, 1256 flow [2024-01-27 15:29:19,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 160 transitions, 1248 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:19,996 INFO L231 Difference]: Finished difference. Result has 130 places, 146 transitions, 898 flow [2024-01-27 15:29:19,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=898, PETRI_PLACES=130, PETRI_TRANSITIONS=146} [2024-01-27 15:29:19,996 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 59 predicate places. [2024-01-27 15:29:19,996 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 146 transitions, 898 flow [2024-01-27 15:29:19,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:19,997 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 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 15:29:19,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-27 15:29:19,997 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:19,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:19,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1856465229, now seen corresponding path program 1 times [2024-01-27 15:29:19,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:19,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93585863] [2024-01-27 15:29:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:19,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-01-27 15:29:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93585863] [2024-01-27 15:29:20,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93585863] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:20,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:20,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709438020] [2024-01-27 15:29:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:20,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:20,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:20,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 146 transitions, 898 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:20,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:20,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:20,971 INFO L124 PetriNetUnfolderBase]: 2349/4169 cut-off events. [2024-01-27 15:29:20,971 INFO L125 PetriNetUnfolderBase]: For 2012/2012 co-relation queries the response was YES. [2024-01-27 15:29:20,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10601 conditions, 4169 events. 2349/4169 cut-off events. For 2012/2012 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 25801 event pairs, 1849 based on Foata normal form. 46/3511 useless extension candidates. Maximal degree in co-relation 10573. Up to 3526 conditions per place. [2024-01-27 15:29:20,984 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 151 selfloop transitions, 4 changer transitions 9/169 dead transitions. [2024-01-27 15:29:20,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 1282 flow [2024-01-27 15:29:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-01-27 15:29:20,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41403508771929826 [2024-01-27 15:29:20,984 INFO L175 Difference]: Start difference. First operand has 130 places, 146 transitions, 898 flow. Second operand 3 states and 118 transitions. [2024-01-27 15:29:20,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 1282 flow [2024-01-27 15:29:20,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 169 transitions, 1278 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:20,991 INFO L231 Difference]: Finished difference. Result has 130 places, 145 transitions, 908 flow [2024-01-27 15:29:20,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=908, PETRI_PLACES=130, PETRI_TRANSITIONS=145} [2024-01-27 15:29:20,992 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 59 predicate places. [2024-01-27 15:29:20,992 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 145 transitions, 908 flow [2024-01-27 15:29:20,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:20,992 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 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 15:29:20,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-27 15:29:20,992 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:20,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1908628050, now seen corresponding path program 1 times [2024-01-27 15:29:20,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:20,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846488665] [2024-01-27 15:29:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:20,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-01-27 15:29:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846488665] [2024-01-27 15:29:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846488665] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84031583] [2024-01-27 15:29:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:21,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:21,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:21,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 145 transitions, 908 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:21,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:21,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:21,916 INFO L124 PetriNetUnfolderBase]: 2278/4050 cut-off events. [2024-01-27 15:29:21,916 INFO L125 PetriNetUnfolderBase]: For 2189/2189 co-relation queries the response was YES. [2024-01-27 15:29:21,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10500 conditions, 4050 events. 2278/4050 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24849 event pairs, 1743 based on Foata normal form. 40/3394 useless extension candidates. Maximal degree in co-relation 10470. Up to 3252 conditions per place. [2024-01-27 15:29:21,932 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 153 selfloop transitions, 3 changer transitions 9/170 dead transitions. [2024-01-27 15:29:21,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 170 transitions, 1298 flow [2024-01-27 15:29:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-27 15:29:21,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-01-27 15:29:21,933 INFO L175 Difference]: Start difference. First operand has 130 places, 145 transitions, 908 flow. Second operand 3 states and 120 transitions. [2024-01-27 15:29:21,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 170 transitions, 1298 flow [2024-01-27 15:29:21,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 170 transitions, 1280 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:21,941 INFO L231 Difference]: Finished difference. Result has 131 places, 144 transitions, 896 flow [2024-01-27 15:29:21,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=896, PETRI_PLACES=131, PETRI_TRANSITIONS=144} [2024-01-27 15:29:21,941 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 60 predicate places. [2024-01-27 15:29:21,941 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 144 transitions, 896 flow [2024-01-27 15:29:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:21,942 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-27 15:29:21,942 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:21,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1974537622, now seen corresponding path program 1 times [2024-01-27 15:29:21,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:21,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298118678] [2024-01-27 15:29:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298118678] [2024-01-27 15:29:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298118678] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:22,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:22,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:22,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077728214] [2024-01-27 15:29:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:22,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:22,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:22,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:22,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 144 transitions, 896 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:22,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:22,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:22,855 INFO L124 PetriNetUnfolderBase]: 2284/4058 cut-off events. [2024-01-27 15:29:22,855 INFO L125 PetriNetUnfolderBase]: For 1867/1867 co-relation queries the response was YES. [2024-01-27 15:29:22,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 4058 events. 2284/4058 cut-off events. For 1867/1867 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24935 event pairs, 1906 based on Foata normal form. 1/3363 useless extension candidates. Maximal degree in co-relation 10607. Up to 3680 conditions per place. [2024-01-27 15:29:22,870 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 143 selfloop transitions, 1 changer transitions 20/169 dead transitions. [2024-01-27 15:29:22,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 169 transitions, 1279 flow [2024-01-27 15:29:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-01-27 15:29:22,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33157894736842103 [2024-01-27 15:29:22,871 INFO L175 Difference]: Start difference. First operand has 131 places, 144 transitions, 896 flow. Second operand 4 states and 126 transitions. [2024-01-27 15:29:22,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 169 transitions, 1279 flow [2024-01-27 15:29:22,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 169 transitions, 1276 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:22,878 INFO L231 Difference]: Finished difference. Result has 134 places, 142 transitions, 879 flow [2024-01-27 15:29:22,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=879, PETRI_PLACES=134, PETRI_TRANSITIONS=142} [2024-01-27 15:29:22,879 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2024-01-27 15:29:22,879 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 142 transitions, 879 flow [2024-01-27 15:29:22,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:22,879 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-27 15:29:22,880 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:22,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1077163272, now seen corresponding path program 2 times [2024-01-27 15:29:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:22,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067064269] [2024-01-27 15:29:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:23,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067064269] [2024-01-27 15:29:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067064269] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:23,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688135745] [2024-01-27 15:29:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:23,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:23,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 142 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:23,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:23,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:23,801 INFO L124 PetriNetUnfolderBase]: 2186/3875 cut-off events. [2024-01-27 15:29:23,801 INFO L125 PetriNetUnfolderBase]: For 1675/1675 co-relation queries the response was YES. [2024-01-27 15:29:23,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 3875 events. 2186/3875 cut-off events. For 1675/1675 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23483 event pairs, 1844 based on Foata normal form. 1/3198 useless extension candidates. Maximal degree in co-relation 10009. Up to 3574 conditions per place. [2024-01-27 15:29:23,813 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 132 selfloop transitions, 0 changer transitions 23/160 dead transitions. [2024-01-27 15:29:23,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 160 transitions, 1227 flow [2024-01-27 15:29:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-01-27 15:29:23,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3105263157894737 [2024-01-27 15:29:23,814 INFO L175 Difference]: Start difference. First operand has 134 places, 142 transitions, 879 flow. Second operand 4 states and 118 transitions. [2024-01-27 15:29:23,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 160 transitions, 1227 flow [2024-01-27 15:29:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 1222 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:23,820 INFO L231 Difference]: Finished difference. Result has 135 places, 137 transitions, 851 flow [2024-01-27 15:29:23,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=851, PETRI_PLACES=135, PETRI_TRANSITIONS=137} [2024-01-27 15:29:23,821 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2024-01-27 15:29:23,821 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 137 transitions, 851 flow [2024-01-27 15:29:23,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:23,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:23,821 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-27 15:29:23,822 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:23,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash -246614611, now seen corresponding path program 1 times [2024-01-27 15:29:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602909918] [2024-01-27 15:29:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:24,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602909918] [2024-01-27 15:29:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602909918] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478585147] [2024-01-27 15:29:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:24,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:24,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 137 transitions, 851 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:24,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:24,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:24,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:24,662 INFO L124 PetriNetUnfolderBase]: 1839/3294 cut-off events. [2024-01-27 15:29:24,663 INFO L125 PetriNetUnfolderBase]: For 1344/1344 co-relation queries the response was YES. [2024-01-27 15:29:24,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8496 conditions, 3294 events. 1839/3294 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19313 event pairs, 1499 based on Foata normal form. 1/2791 useless extension candidates. Maximal degree in co-relation 8464. Up to 2951 conditions per place. [2024-01-27 15:29:24,676 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 136 selfloop transitions, 1 changer transitions 18/160 dead transitions. [2024-01-27 15:29:24,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 160 transitions, 1214 flow [2024-01-27 15:29:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-27 15:29:24,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3131578947368421 [2024-01-27 15:29:24,677 INFO L175 Difference]: Start difference. First operand has 135 places, 137 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-01-27 15:29:24,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 160 transitions, 1214 flow [2024-01-27 15:29:24,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 160 transitions, 1202 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:24,682 INFO L231 Difference]: Finished difference. Result has 128 places, 135 transitions, 823 flow [2024-01-27 15:29:24,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=823, PETRI_PLACES=128, PETRI_TRANSITIONS=135} [2024-01-27 15:29:24,682 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 57 predicate places. [2024-01-27 15:29:24,682 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 135 transitions, 823 flow [2024-01-27 15:29:24,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:24,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:24,683 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:24,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-27 15:29:24,693 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:24,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1002429891, now seen corresponding path program 2 times [2024-01-27 15:29:24,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623102378] [2024-01-27 15:29:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:24,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623102378] [2024-01-27 15:29:24,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623102378] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:24,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:24,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239959913] [2024-01-27 15:29:24,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:24,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:24,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:24,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 135 transitions, 823 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:24,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:24,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:24,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:25,600 INFO L124 PetriNetUnfolderBase]: 1757/3139 cut-off events. [2024-01-27 15:29:25,600 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-01-27 15:29:25,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7965 conditions, 3139 events. 1757/3139 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18183 event pairs, 1443 based on Foata normal form. 1/2648 useless extension candidates. Maximal degree in co-relation 7933. Up to 2855 conditions per place. [2024-01-27 15:29:25,611 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 121 selfloop transitions, 0 changer transitions 26/152 dead transitions. [2024-01-27 15:29:25,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 152 transitions, 1153 flow [2024-01-27 15:29:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-27 15:29:25,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29473684210526313 [2024-01-27 15:29:25,612 INFO L175 Difference]: Start difference. First operand has 128 places, 135 transitions, 823 flow. Second operand 4 states and 112 transitions. [2024-01-27 15:29:25,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 152 transitions, 1153 flow [2024-01-27 15:29:25,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 152 transitions, 1150 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:25,617 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 785 flow [2024-01-27 15:29:25,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=785, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2024-01-27 15:29:25,618 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 58 predicate places. [2024-01-27 15:29:25,618 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 785 flow [2024-01-27 15:29:25,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:25,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:25,618 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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 15:29:25,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-27 15:29:25,618 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:25,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2030437419, now seen corresponding path program 1 times [2024-01-27 15:29:25,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:25,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421446686] [2024-01-27 15:29:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:25,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:26,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421446686] [2024-01-27 15:29:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421446686] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:26,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:26,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548659071] [2024-01-27 15:29:26,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:26,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:29:26,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 785 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:26,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:26,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:29:26,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:26,553 INFO L124 PetriNetUnfolderBase]: 1253/2306 cut-off events. [2024-01-27 15:29:26,553 INFO L125 PetriNetUnfolderBase]: For 893/893 co-relation queries the response was YES. [2024-01-27 15:29:26,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5898 conditions, 2306 events. 1253/2306 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12553 event pairs, 539 based on Foata normal form. 1/1983 useless extension candidates. Maximal degree in co-relation 5866. Up to 1231 conditions per place. [2024-01-27 15:29:26,563 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 143 selfloop transitions, 7 changer transitions 5/160 dead transitions. [2024-01-27 15:29:26,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 1190 flow [2024-01-27 15:29:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-01-27 15:29:26,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-01-27 15:29:26,564 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 785 flow. Second operand 3 states and 115 transitions. [2024-01-27 15:29:26,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 1190 flow [2024-01-27 15:29:26,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 160 transitions, 1178 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:26,568 INFO L231 Difference]: Finished difference. Result has 117 places, 128 transitions, 812 flow [2024-01-27 15:29:26,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=812, PETRI_PLACES=117, PETRI_TRANSITIONS=128} [2024-01-27 15:29:26,569 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 46 predicate places. [2024-01-27 15:29:26,569 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 128 transitions, 812 flow [2024-01-27 15:29:26,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:26,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:26,569 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 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 15:29:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-27 15:29:26,570 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:26,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:26,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2118103896, now seen corresponding path program 1 times [2024-01-27 15:29:26,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:26,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816533564] [2024-01-27 15:29:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:26,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-01-27 15:29:31,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:31,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816533564] [2024-01-27 15:29:31,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816533564] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:31,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924597641] [2024-01-27 15:29:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:31,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:31,752 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:31,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-27 15:29:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:32,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-27 15:29:32,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:37,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:29:37,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 399 treesize of output 2576 [2024-01-27 15:35:56,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-01-27 15:35:56,839 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-01-27 15:35:56,840 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-01-27 15:35:56,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-01-27 15:35:57,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:35:57,051 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:601) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 77 more [2024-01-27 15:35:57,056 INFO L158 Benchmark]: Toolchain (without parser) took 439164.77ms. Allocated memory was 169.9MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 141.2MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-01-27 15:35:57,056 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory was 67.5MB in the beginning and 67.4MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:35:57,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.44ms. Allocated memory is still 169.9MB. Free memory was 141.2MB in the beginning and 120.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:35:57,057 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.79ms. Allocated memory is still 169.9MB. Free memory was 120.2MB in the beginning and 111.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-01-27 15:35:57,057 INFO L158 Benchmark]: Boogie Preprocessor took 121.47ms. Allocated memory is still 169.9MB. Free memory was 111.8MB in the beginning and 101.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-27 15:35:57,057 INFO L158 Benchmark]: RCFGBuilder took 2416.88ms. Allocated memory was 169.9MB in the beginning and 222.3MB in the end (delta: 52.4MB). Free memory was 101.4MB in the beginning and 132.6MB in the end (delta: -31.2MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2024-01-27 15:35:57,057 INFO L158 Benchmark]: TraceAbstraction took 436179.30ms. Allocated memory was 222.3MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 131.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-01-27 15:35:57,058 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory was 67.5MB in the beginning and 67.4MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.44ms. Allocated memory is still 169.9MB. Free memory was 141.2MB in the beginning and 120.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.79ms. Allocated memory is still 169.9MB. Free memory was 120.2MB in the beginning and 111.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.47ms. Allocated memory is still 169.9MB. Free memory was 111.8MB in the beginning and 101.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2416.88ms. Allocated memory was 169.9MB in the beginning and 222.3MB in the end (delta: 52.4MB). Free memory was 101.4MB in the beginning and 132.6MB in the end (delta: -31.2MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. * TraceAbstraction took 436179.30ms. Allocated memory was 222.3MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 131.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/weaver/chl-poker-hand-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:35:58,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:35:58,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-27 15:35:59,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:35:59,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:35:59,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:35:59,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:35:59,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:35:59,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:35:59,033 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:35:59,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:35:59,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:35:59,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:35:59,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:35:59,035 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:35:59,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:35:59,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:35:59,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:35:59,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:35:59,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:35:59,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:35:59,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:35:59,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:35:59,038 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-27 15:35:59,038 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-27 15:35:59,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:35:59,038 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-27 15:35:59,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:35:59,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:35:59,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:35:59,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:35:59,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:35:59,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:35:59,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:35:59,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:35:59,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:35:59,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:35:59,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:35:59,042 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-27 15:35:59,042 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-27 15:35:59,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:35:59,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:35:59,043 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:35:59,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:35:59,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:35:59,043 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-27 15:35:59,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2024-01-27 15:35:59,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:35:59,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:35:59,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:35:59,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:35:59,335 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:35:59,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-01-27 15:36:00,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:36:00,626 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:36:00,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-01-27 15:36:00,635 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7817696c/0c8b8374e71c47519fca5e4e5b1ac71c/FLAG7b6be5e97 [2024-01-27 15:36:00,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7817696c/0c8b8374e71c47519fca5e4e5b1ac71c [2024-01-27 15:36:00,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:36:00,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:36:00,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:36:00,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:36:00,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:36:00,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:36:00" (1/1) ... [2024-01-27 15:36:00,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c46bec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:00, skipping insertion in model container [2024-01-27 15:36:00,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:36:00" (1/1) ... [2024-01-27 15:36:00,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:36:00,916 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-27 15:36:00,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:36:00,952 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-01-27 15:36:00,960 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:36:01,014 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-27 15:36:01,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:36:01,029 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:36:01,091 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-01-27 15:36:01,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:36:01,115 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:36:01,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01 WrapperNode [2024-01-27 15:36:01,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:36:01,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:36:01,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:36:01,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:36:01,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,220 INFO L138 Inliner]: procedures = 27, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1539 [2024-01-27 15:36:01,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:36:01,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:36:01,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:36:01,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:36:01,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,292 INFO L175 MemorySlicer]: Split 190 memory accesses to 4 slices as follows [2, 184, 2, 2]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 10 writes are split as follows [0, 8, 1, 1]. [2024-01-27 15:36:01,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:36:01,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:36:01,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:36:01,382 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:36:01,383 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (1/1) ... [2024-01-27 15:36:01,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:36:01,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:36:01,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:36:01,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:36:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:36:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-27 15:36:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-27 15:36:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-27 15:36:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-01-27 15:36:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:36:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:36:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:36:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:36:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:36:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:36:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:36:01,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:36:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:36:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-27 15:36:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-27 15:36:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-27 15:36:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-01-27 15:36:01,460 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:36:01,604 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:36:01,606 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:36:02,996 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:36:02,997 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:36:04,404 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:36:04,405 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-01-27 15:36:04,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:36:04 BoogieIcfgContainer [2024-01-27 15:36:04,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:36:04,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:36:04,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:36:04,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:36:04,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:36:00" (1/3) ... [2024-01-27 15:36:04,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c87e30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:36:04, skipping insertion in model container [2024-01-27 15:36:04,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:36:01" (2/3) ... [2024-01-27 15:36:04,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c87e30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:36:04, skipping insertion in model container [2024-01-27 15:36:04,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:36:04" (3/3) ... [2024-01-27 15:36:04,410 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-01-27 15:36:04,416 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:36:04,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:36:04,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:36:04,423 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:36:04,722 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:36:04,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 95 transitions, 204 flow [2024-01-27 15:36:04,792 INFO L124 PetriNetUnfolderBase]: 28/93 cut-off events. [2024-01-27 15:36:04,792 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:36:04,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 28/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 247 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2024-01-27 15:36:04,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 95 transitions, 204 flow [2024-01-27 15:36:04,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 92 transitions, 196 flow [2024-01-27 15:36:04,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:36:04,809 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;@3b9df06d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:36:04,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:36:04,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:36:04,843 INFO L124 PetriNetUnfolderBase]: 28/91 cut-off events. [2024-01-27 15:36:04,843 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:36:04,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:04,844 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 15:36:04,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:36:04,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1653204553, now seen corresponding path program 1 times [2024-01-27 15:36:04,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553771187] [2024-01-27 15:36:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:36:04,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:04,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:04,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 15:36:04,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-01-27 15:36:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:36:05,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:36:05,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:36:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:36:05,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:36:05,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:36:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553771187] [2024-01-27 15:36:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553771187] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:36:05,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:36:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:36:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411023122] [2024-01-27 15:36:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:36:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:36:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:36:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:36:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:36:05,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:36:05,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 92 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:05,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:36:05,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:36:05,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:36:06,475 INFO L124 PetriNetUnfolderBase]: 2193/3356 cut-off events. [2024-01-27 15:36:06,476 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-01-27 15:36:06,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6691 conditions, 3356 events. 2193/3356 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17121 event pairs, 1449 based on Foata normal form. 184/2784 useless extension candidates. Maximal degree in co-relation 6413. Up to 3261 conditions per place. [2024-01-27 15:36:06,537 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 81 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-01-27 15:36:06,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 362 flow [2024-01-27 15:36:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:36:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:36:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-01-27 15:36:06,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3929824561403509 [2024-01-27 15:36:06,584 INFO L175 Difference]: Start difference. First operand has 71 places, 92 transitions, 196 flow. Second operand 3 states and 112 transitions. [2024-01-27 15:36:06,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 362 flow [2024-01-27 15:36:06,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:36:06,598 INFO L231 Difference]: Finished difference. Result has 70 places, 90 transitions, 202 flow [2024-01-27 15:36:06,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=70, PETRI_TRANSITIONS=90} [2024-01-27 15:36:06,616 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2024-01-27 15:36:06,616 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 90 transitions, 202 flow [2024-01-27 15:36:06,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:06,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:06,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:36:06,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-01-27 15:36:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:06,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:36:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash 700266397, now seen corresponding path program 1 times [2024-01-27 15:36:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:06,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79105072] [2024-01-27 15:36:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:36:06,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:06,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:06,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 15:36:06,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-01-27 15:36:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:36:07,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:36:07,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:36:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:36:07,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:36:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:36:07,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:36:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79105072] [2024-01-27 15:36:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79105072] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:36:07,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:36:07,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-01-27 15:36:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768810496] [2024-01-27 15:36:07,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 15:36:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:36:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:36:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:36:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:36:07,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:36:07,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 90 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:07,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:36:07,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:36:07,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:36:08,538 INFO L124 PetriNetUnfolderBase]: 2193/3374 cut-off events. [2024-01-27 15:36:08,538 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-27 15:36:08,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6696 conditions, 3374 events. 2193/3374 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17098 event pairs, 1449 based on Foata normal form. 3/2622 useless extension candidates. Maximal degree in co-relation 6666. Up to 3261 conditions per place. [2024-01-27 15:36:08,549 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 75 selfloop transitions, 28 changer transitions 0/108 dead transitions. [2024-01-27 15:36:08,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 456 flow [2024-01-27 15:36:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:36:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:36:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-01-27 15:36:08,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28596491228070176 [2024-01-27 15:36:08,552 INFO L175 Difference]: Start difference. First operand has 70 places, 90 transitions, 202 flow. Second operand 6 states and 163 transitions. [2024-01-27 15:36:08,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 456 flow [2024-01-27 15:36:08,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:36:08,554 INFO L231 Difference]: Finished difference. Result has 76 places, 108 transitions, 354 flow [2024-01-27 15:36:08,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=76, PETRI_TRANSITIONS=108} [2024-01-27 15:36:08,555 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2024-01-27 15:36:08,555 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 108 transitions, 354 flow [2024-01-27 15:36:08,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:08,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:08,556 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:36:08,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-01-27 15:36:08,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:08,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:36:08,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:08,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1711270119, now seen corresponding path program 1 times [2024-01-27 15:36:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183797860] [2024-01-27 15:36:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:36:08,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:08,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 15:36:08,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-01-27 15:36:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:36:09,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:36:09,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:36:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-01-27 15:36:09,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:36:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-01-27 15:36:09,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:36:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183797860] [2024-01-27 15:36:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183797860] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:36:09,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:36:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-01-27 15:36:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614045334] [2024-01-27 15:36:09,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 15:36:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 15:36:09,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:36:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 15:36:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-01-27 15:36:09,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 95 [2024-01-27 15:36:09,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 108 transitions, 354 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:09,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:36:09,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 95 [2024-01-27 15:36:09,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:36:11,469 INFO L124 PetriNetUnfolderBase]: 2193/3390 cut-off events. [2024-01-27 15:36:11,470 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-27 15:36:11,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 3390 events. 2193/3390 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17130 event pairs, 1449 based on Foata normal form. 15/2656 useless extension candidates. Maximal degree in co-relation 6730. Up to 3261 conditions per place. [2024-01-27 15:36:11,481 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 75 selfloop transitions, 44 changer transitions 0/124 dead transitions. [2024-01-27 15:36:11,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 124 transitions, 660 flow [2024-01-27 15:36:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:36:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:36:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-01-27 15:36:11,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19210526315789472 [2024-01-27 15:36:11,486 INFO L175 Difference]: Start difference. First operand has 76 places, 108 transitions, 354 flow. Second operand 12 states and 219 transitions. [2024-01-27 15:36:11,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 124 transitions, 660 flow [2024-01-27 15:36:11,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 124 transitions, 630 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-01-27 15:36:11,492 INFO L231 Difference]: Finished difference. Result has 89 places, 124 transitions, 542 flow [2024-01-27 15:36:11,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=89, PETRI_TRANSITIONS=124} [2024-01-27 15:36:11,494 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 18 predicate places. [2024-01-27 15:36:11,494 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 124 transitions, 542 flow [2024-01-27 15:36:11,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:11,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:11,495 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:36:11,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:36:11,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:11,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:36:11,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:11,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1587761363, now seen corresponding path program 2 times [2024-01-27 15:36:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:11,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760366244] [2024-01-27 15:36:11,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:36:11,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 15:36:11,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:11,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 15:36:11,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process Killed by 15