./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.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-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:25:27,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:25:27,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:25:27,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:25:27,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:25:27,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:25:27,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:25:27,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:25:27,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:25:27,136 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:25:27,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:25:27,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:25:27,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:25:27,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:25:27,145 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:25:27,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:25:27,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:25:27,146 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:25:27,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:25:27,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:25:27,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:25:27,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:25:27,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:25:27,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:25:27,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:25:27,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:25:27,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:25:27,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:25:27,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:25:27,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:25:27,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:25:27,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:25:27,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:25:27,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:25:27,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:25:27,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:25:27,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:25:27,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:25:27,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:25:27,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:25:27,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:25:27,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:25:27,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:25:27,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-01-27 15:25:27,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:25:27,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:25:27,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:25:27,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:25:27,350 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:25:27,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2024-01-27 15:25:28,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:25:28,630 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:25:28,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2024-01-27 15:25:28,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3e2a97b/faa9edb530224c0b831fd881751df318/FLAGd4dd94bf0 [2024-01-27 15:25:28,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3e2a97b/faa9edb530224c0b831fd881751df318 [2024-01-27 15:25:28,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:25:28,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:25:28,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:25:28,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:25:28,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:25:28,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:28,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dab7030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28, skipping insertion in model container [2024-01-27 15:25:28,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:28,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:25:28,844 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-nzb-file-subst.wvr.c[6540,6553] [2024-01-27 15:25:28,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:25:28,859 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:25:28,899 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-nzb-file-subst.wvr.c[6540,6553] [2024-01-27 15:25:28,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:25:28,921 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:25:28,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28 WrapperNode [2024-01-27 15:25:28,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:25:28,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:25:28,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:25:28,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:25:28,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:28,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:28,976 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 606 [2024-01-27 15:25:28,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:25:28,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:25:28,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:25:28,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:25:28,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:28,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:28,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,005 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 2, 27, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-01-27 15:25:29,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:25:29,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:25:29,051 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:25:29,051 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:25:29,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (1/1) ... [2024-01-27 15:25:29,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:25:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:25:29,078 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 15:25:29,098 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 15:25:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:25:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:25:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:25:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:25:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:25:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:25:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:25:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:25:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:25:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:25:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:25:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:25:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:25:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:25:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:25:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:25:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:25:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:25:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:25:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:25:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:25:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:25:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:25:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:25:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:25:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:25:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:25:29,138 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 15:25:29,285 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:25:29,294 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:25:29,977 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:25:29,978 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:25:30,519 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:25:30,520 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 15:25:30,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:25:30 BoogieIcfgContainer [2024-01-27 15:25:30,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:25:30,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:25:30,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:25:30,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:25:30,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:25:28" (1/3) ... [2024-01-27 15:25:30,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679ca1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:25:30, skipping insertion in model container [2024-01-27 15:25:30,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:25:28" (2/3) ... [2024-01-27 15:25:30,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679ca1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:25:30, skipping insertion in model container [2024-01-27 15:25:30,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:25:30" (3/3) ... [2024-01-27 15:25:30,526 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-01-27 15:25:30,533 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:25:30,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:25:30,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:25:30,539 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:25:30,637 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:25:30,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:25:30,703 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-27 15:25:30,704 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:25:30,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-27 15:25:30,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:25:30,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-27 15:25:30,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:25:30,728 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;@10b4ec85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:25:30,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:25:30,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:25:30,746 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-27 15:25:30,746 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:25:30,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:30,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:25:30,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:30,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757406, now seen corresponding path program 1 times [2024-01-27 15:25:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647314656] [2024-01-27 15:25:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:31,156 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 15:25:31,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:31,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647314656] [2024-01-27 15:25:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647314656] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:31,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:31,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:25:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092783305] [2024-01-27 15:25:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:31,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:25:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:25:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:25:31,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:31,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:31,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:31,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:31,680 INFO L124 PetriNetUnfolderBase]: 1664/2361 cut-off events. [2024-01-27 15:25:31,680 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-27 15:25:31,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2361 events. 1664/2361 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9842 event pairs, 1125 based on Foata normal form. 268/2082 useless extension candidates. Maximal degree in co-relation 4159. Up to 2271 conditions per place. [2024-01-27 15:25:31,694 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-01-27 15:25:31,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 198 flow [2024-01-27 15:25:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:25:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:25:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-27 15:25:31,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-01-27 15:25:31,704 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 3 states and 70 transitions. [2024-01-27 15:25:31,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 198 flow [2024-01-27 15:25:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:25:31,714 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 126 flow [2024-01-27 15:25:31,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2024-01-27 15:25:31,718 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-01-27 15:25:31,718 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 126 flow [2024-01-27 15:25:31,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:25:31,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:31,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:25:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:25:31,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:31,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1741264555, now seen corresponding path program 1 times [2024-01-27 15:25:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667422932] [2024-01-27 15:25:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:25:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667422932] [2024-01-27 15:25:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667422932] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:25:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871474801] [2024-01-27 15:25:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:31,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:31,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:25:31,887 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 15:25:31,950 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 15:25:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:32,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:25:32,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:25:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:25:32,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:25:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:25:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871474801] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:25:32,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:25:32,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-01-27 15:25:32,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215634627] [2024-01-27 15:25:32,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:25:32,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:25:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:25:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:25:32,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:32,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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 15:25:32,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:32,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:32,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:32,538 INFO L124 PetriNetUnfolderBase]: 1664/2370 cut-off events. [2024-01-27 15:25:32,538 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-27 15:25:32,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2370 events. 1664/2370 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9852 event pairs, 1125 based on Foata normal form. 6/1831 useless extension candidates. Maximal degree in co-relation 4672. Up to 2271 conditions per place. [2024-01-27 15:25:32,547 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 37 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2024-01-27 15:25:32,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 266 flow [2024-01-27 15:25:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:25:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:25:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-01-27 15:25:32,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366013071895425 [2024-01-27 15:25:32,555 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 126 flow. Second operand 6 states and 103 transitions. [2024-01-27 15:25:32,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 266 flow [2024-01-27 15:25:32,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:25:32,558 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 216 flow [2024-01-27 15:25:32,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2024-01-27 15:25:32,559 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-01-27 15:25:32,559 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 216 flow [2024-01-27 15:25:32,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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 15:25:32,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:32,559 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 15:25:32,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 15:25:32,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:32,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:32,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash -397893168, now seen corresponding path program 2 times [2024-01-27 15:25:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:32,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321667229] [2024-01-27 15:25:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:32,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:25:32,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:32,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321667229] [2024-01-27 15:25:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321667229] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:25:32,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72704931] [2024-01-27 15:25:32,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:25:32,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:25:32,955 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 15:25:32,965 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 15:25:33,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:25:33,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:25:33,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:25:33,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:25:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:25:34,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:25:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72704931] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:34,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:25:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-01-27 15:25:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080235337] [2024-01-27 15:25:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:34,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:25:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:25:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:25:34,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:34,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:34,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:34,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:34,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:35,256 INFO L124 PetriNetUnfolderBase]: 2392/3465 cut-off events. [2024-01-27 15:25:35,256 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-27 15:25:35,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3465 events. 2392/3465 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16292 event pairs, 1125 based on Foata normal form. 1/2726 useless extension candidates. Maximal degree in co-relation 6885. Up to 2197 conditions per place. [2024-01-27 15:25:35,268 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 93 selfloop transitions, 2 changer transitions 10/109 dead transitions. [2024-01-27 15:25:35,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 109 transitions, 544 flow [2024-01-27 15:25:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:25:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:25:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-27 15:25:35,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-01-27 15:25:35,272 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 216 flow. Second operand 5 states and 129 transitions. [2024-01-27 15:25:35,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 109 transitions, 544 flow [2024-01-27 15:25:35,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-27 15:25:35,277 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 207 flow [2024-01-27 15:25:35,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2024-01-27 15:25:35,278 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-01-27 15:25:35,278 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 207 flow [2024-01-27 15:25:35,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:35,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:35,278 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 15:25:35,297 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 15:25:35,493 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,SelfDestructingSolverStorable2 [2024-01-27 15:25:35,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:35,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1787279914, now seen corresponding path program 3 times [2024-01-27 15:25:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452749153] [2024-01-27 15:25:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:25:35,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452749153] [2024-01-27 15:25:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452749153] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:25:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364016866] [2024-01-27 15:25:35,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:25:35,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:35,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:25:35,642 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 15:25:35,667 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 15:25:35,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:25:35,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:25:35,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:25:35,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:25:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:25:36,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:25:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364016866] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:36,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:25:36,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-01-27 15:25:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750606243] [2024-01-27 15:25:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:36,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:25:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:25:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:25:36,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:36,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:36,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:36,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:38,004 INFO L124 PetriNetUnfolderBase]: 3066/4543 cut-off events. [2024-01-27 15:25:38,004 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2024-01-27 15:25:38,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 4543 events. 3066/4543 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23003 event pairs, 1655 based on Foata normal form. 1/4078 useless extension candidates. Maximal degree in co-relation 9559. Up to 2965 conditions per place. [2024-01-27 15:25:38,021 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 89 selfloop transitions, 3 changer transitions 10/106 dead transitions. [2024-01-27 15:25:38,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 531 flow [2024-01-27 15:25:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:25:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:25:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-01-27 15:25:38,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-01-27 15:25:38,023 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 207 flow. Second operand 5 states and 125 transitions. [2024-01-27 15:25:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 531 flow [2024-01-27 15:25:38,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 106 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:25:38,026 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 224 flow [2024-01-27 15:25:38,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-01-27 15:25:38,028 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-01-27 15:25:38,028 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 224 flow [2024-01-27 15:25:38,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:38,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:38,029 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 15:25:38,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-27 15:25:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:38,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:38,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1452446996, now seen corresponding path program 4 times [2024-01-27 15:25:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879210184] [2024-01-27 15:25:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:25:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879210184] [2024-01-27 15:25:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879210184] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:25:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244133442] [2024-01-27 15:25:38,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:25:38,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:38,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:25:38,387 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 15:25:38,388 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 15:25:38,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:25:38,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:25:38,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:25:38,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:25:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:25:38,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:25:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:25:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244133442] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:25:38,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:25:38,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-27 15:25:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225987030] [2024-01-27 15:25:38,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:25:38,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 15:25:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 15:25:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-01-27 15:25:38,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:38,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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 15:25:38,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:38,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:38,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:39,342 INFO L124 PetriNetUnfolderBase]: 3032/4523 cut-off events. [2024-01-27 15:25:39,342 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2024-01-27 15:25:39,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 4523 events. 3032/4523 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22857 event pairs, 2407 based on Foata normal form. 1/4058 useless extension candidates. Maximal degree in co-relation 9939. Up to 4383 conditions per place. [2024-01-27 15:25:39,362 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 39 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-01-27 15:25:39,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 356 flow [2024-01-27 15:25:39,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:25:39,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:25:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-01-27 15:25:39,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29971988795518206 [2024-01-27 15:25:39,363 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 224 flow. Second operand 7 states and 107 transitions. [2024-01-27 15:25:39,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 356 flow [2024-01-27 15:25:39,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 350 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:25:39,367 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 286 flow [2024-01-27 15:25:39,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-01-27 15:25:39,369 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-01-27 15:25:39,369 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 286 flow [2024-01-27 15:25:39,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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 15:25:39,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:39,370 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:25:39,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:25:39,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:25:39,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:39,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:39,583 INFO L85 PathProgramCache]: Analyzing trace with hash -405483631, now seen corresponding path program 5 times [2024-01-27 15:25:39,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:39,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570206503] [2024-01-27 15:25:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:39,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:40,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570206503] [2024-01-27 15:25:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570206503] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:40,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:40,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:25:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181681444] [2024-01-27 15:25:40,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:25:40,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:25:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:25:40,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:40,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:40,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:40,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:40,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:42,480 INFO L124 PetriNetUnfolderBase]: 6856/10336 cut-off events. [2024-01-27 15:25:42,480 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2024-01-27 15:25:42,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 10336 events. 6856/10336 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 62465 event pairs, 1953 based on Foata normal form. 1/8987 useless extension candidates. Maximal degree in co-relation 21523. Up to 3978 conditions per place. [2024-01-27 15:25:42,517 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 141 selfloop transitions, 36 changer transitions 1/182 dead transitions. [2024-01-27 15:25:42,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 182 transitions, 952 flow [2024-01-27 15:25:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:25:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:25:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-01-27 15:25:42,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5826330532212886 [2024-01-27 15:25:42,519 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 286 flow. Second operand 7 states and 208 transitions. [2024-01-27 15:25:42,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 182 transitions, 952 flow [2024-01-27 15:25:42,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 182 transitions, 916 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:25:42,524 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 541 flow [2024-01-27 15:25:42,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2024-01-27 15:25:42,525 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-01-27 15:25:42,525 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 541 flow [2024-01-27 15:25:42,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:42,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:42,526 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:25:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:25:42,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:42,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1166366095, now seen corresponding path program 6 times [2024-01-27 15:25:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263204684] [2024-01-27 15:25:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:43,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263204684] [2024-01-27 15:25:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263204684] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:43,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:43,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:25:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822539525] [2024-01-27 15:25:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:43,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:25:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:25:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:25:43,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:43,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 541 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:43,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:43,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:43,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:45,554 INFO L124 PetriNetUnfolderBase]: 8382/12468 cut-off events. [2024-01-27 15:25:45,554 INFO L125 PetriNetUnfolderBase]: For 11518/11542 co-relation queries the response was YES. [2024-01-27 15:25:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32908 conditions, 12468 events. 8382/12468 cut-off events. For 11518/11542 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 76881 event pairs, 3251 based on Foata normal form. 9/12143 useless extension candidates. Maximal degree in co-relation 32808. Up to 5412 conditions per place. [2024-01-27 15:25:45,607 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 142 selfloop transitions, 43 changer transitions 2/191 dead transitions. [2024-01-27 15:25:45,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 191 transitions, 1271 flow [2024-01-27 15:25:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:25:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:25:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-01-27 15:25:45,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2024-01-27 15:25:45,608 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 541 flow. Second operand 5 states and 144 transitions. [2024-01-27 15:25:45,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 191 transitions, 1271 flow [2024-01-27 15:25:45,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 191 transitions, 1263 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-27 15:25:45,650 INFO L231 Difference]: Finished difference. Result has 78 places, 131 transitions, 925 flow [2024-01-27 15:25:45,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=925, PETRI_PLACES=78, PETRI_TRANSITIONS=131} [2024-01-27 15:25:45,651 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-27 15:25:45,651 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 131 transitions, 925 flow [2024-01-27 15:25:45,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:45,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:45,651 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:25:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:25:45,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:45,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:45,652 INFO L85 PathProgramCache]: Analyzing trace with hash -376044409, now seen corresponding path program 7 times [2024-01-27 15:25:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325093338] [2024-01-27 15:25:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:46,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325093338] [2024-01-27 15:25:46,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325093338] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:46,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:46,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:25:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784047470] [2024-01-27 15:25:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:25:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:25:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:25:46,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:46,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 131 transitions, 925 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:46,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:46,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:46,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:48,676 INFO L124 PetriNetUnfolderBase]: 9020/13494 cut-off events. [2024-01-27 15:25:48,676 INFO L125 PetriNetUnfolderBase]: For 25362/25372 co-relation queries the response was YES. [2024-01-27 15:25:48,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40234 conditions, 13494 events. 9020/13494 cut-off events. For 25362/25372 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 85665 event pairs, 3681 based on Foata normal form. 3/13177 useless extension candidates. Maximal degree in co-relation 40130. Up to 7368 conditions per place. [2024-01-27 15:25:48,742 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 180 selfloop transitions, 41 changer transitions 2/227 dead transitions. [2024-01-27 15:25:48,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 227 transitions, 1852 flow [2024-01-27 15:25:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:25:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:25:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-01-27 15:25:48,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2024-01-27 15:25:48,743 INFO L175 Difference]: Start difference. First operand has 78 places, 131 transitions, 925 flow. Second operand 5 states and 149 transitions. [2024-01-27 15:25:48,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 227 transitions, 1852 flow [2024-01-27 15:25:48,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 227 transitions, 1840 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-01-27 15:25:48,816 INFO L231 Difference]: Finished difference. Result has 85 places, 156 transitions, 1326 flow [2024-01-27 15:25:48,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1326, PETRI_PLACES=85, PETRI_TRANSITIONS=156} [2024-01-27 15:25:48,817 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-01-27 15:25:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 156 transitions, 1326 flow [2024-01-27 15:25:48,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:48,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:48,817 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:25:48,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:25:48,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:48,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -668652335, now seen corresponding path program 8 times [2024-01-27 15:25:48,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:48,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864121133] [2024-01-27 15:25:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:49,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864121133] [2024-01-27 15:25:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864121133] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:49,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:49,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:25:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623833583] [2024-01-27 15:25:49,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:25:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:25:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:25:49,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:49,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 156 transitions, 1326 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:49,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:49,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:49,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:51,611 INFO L124 PetriNetUnfolderBase]: 9230/13774 cut-off events. [2024-01-27 15:25:51,611 INFO L125 PetriNetUnfolderBase]: For 39502/39512 co-relation queries the response was YES. [2024-01-27 15:25:51,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44500 conditions, 13774 events. 9230/13774 cut-off events. For 39502/39512 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 87456 event pairs, 3411 based on Foata normal form. 1/13351 useless extension candidates. Maximal degree in co-relation 44392. Up to 6564 conditions per place. [2024-01-27 15:25:51,683 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 164 selfloop transitions, 47 changer transitions 2/217 dead transitions. [2024-01-27 15:25:51,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 217 transitions, 2025 flow [2024-01-27 15:25:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:25:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:25:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-01-27 15:25:51,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568627450980392 [2024-01-27 15:25:51,684 INFO L175 Difference]: Start difference. First operand has 85 places, 156 transitions, 1326 flow. Second operand 5 states and 142 transitions. [2024-01-27 15:25:51,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 217 transitions, 2025 flow [2024-01-27 15:25:51,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 217 transitions, 2017 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-27 15:25:51,889 INFO L231 Difference]: Finished difference. Result has 91 places, 165 transitions, 1561 flow [2024-01-27 15:25:51,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1561, PETRI_PLACES=91, PETRI_TRANSITIONS=165} [2024-01-27 15:25:51,890 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-01-27 15:25:51,890 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 165 transitions, 1561 flow [2024-01-27 15:25:51,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:25:51,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:51,891 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:25:51,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:25:51,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:51,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1626352882, now seen corresponding path program 1 times [2024-01-27 15:25:51,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:51,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474253147] [2024-01-27 15:25:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:51,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:51,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:51,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474253147] [2024-01-27 15:25:51,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474253147] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:51,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:51,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:25:51,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941915396] [2024-01-27 15:25:51,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:51,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:25:51,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:25:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:25:51,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:51,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 165 transitions, 1561 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:25:51,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:51,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:51,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:54,209 INFO L124 PetriNetUnfolderBase]: 10756/15955 cut-off events. [2024-01-27 15:25:54,209 INFO L125 PetriNetUnfolderBase]: For 53718/53728 co-relation queries the response was YES. [2024-01-27 15:25:54,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53573 conditions, 15955 events. 10756/15955 cut-off events. For 53718/53728 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 103132 event pairs, 6071 based on Foata normal form. 306/15588 useless extension candidates. Maximal degree in co-relation 53462. Up to 13149 conditions per place. [2024-01-27 15:25:54,295 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 193 selfloop transitions, 8 changer transitions 1/206 dead transitions. [2024-01-27 15:25:54,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 206 transitions, 2233 flow [2024-01-27 15:25:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:25:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:25:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-01-27 15:25:54,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-01-27 15:25:54,297 INFO L175 Difference]: Start difference. First operand has 91 places, 165 transitions, 1561 flow. Second operand 3 states and 83 transitions. [2024-01-27 15:25:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 206 transitions, 2233 flow [2024-01-27 15:25:54,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 206 transitions, 2169 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-01-27 15:25:54,582 INFO L231 Difference]: Finished difference. Result has 93 places, 166 transitions, 1531 flow [2024-01-27 15:25:54,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1531, PETRI_PLACES=93, PETRI_TRANSITIONS=166} [2024-01-27 15:25:54,583 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-01-27 15:25:54,583 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 166 transitions, 1531 flow [2024-01-27 15:25:54,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:25:54,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:54,583 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:25:54,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:25:54,583 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1951859648, now seen corresponding path program 1 times [2024-01-27 15:25:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061706436] [2024-01-27 15:25:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:54,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061706436] [2024-01-27 15:25:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061706436] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:54,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:54,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:25:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097802140] [2024-01-27 15:25:54,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:54,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:25:54,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:25:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:25:54,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:54,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 166 transitions, 1531 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:25:54,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:54,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:54,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:25:57,183 INFO L124 PetriNetUnfolderBase]: 11282/17020 cut-off events. [2024-01-27 15:25:57,183 INFO L125 PetriNetUnfolderBase]: For 54288/54298 co-relation queries the response was YES. [2024-01-27 15:25:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56429 conditions, 17020 events. 11282/17020 cut-off events. For 54288/54298 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 113288 event pairs, 4191 based on Foata normal form. 11/17015 useless extension candidates. Maximal degree in co-relation 56317. Up to 11562 conditions per place. [2024-01-27 15:25:57,263 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 157 selfloop transitions, 13 changer transitions 59/233 dead transitions. [2024-01-27 15:25:57,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 233 transitions, 2458 flow [2024-01-27 15:25:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:25:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:25:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-27 15:25:57,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-01-27 15:25:57,264 INFO L175 Difference]: Start difference. First operand has 93 places, 166 transitions, 1531 flow. Second operand 4 states and 115 transitions. [2024-01-27 15:25:57,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 233 transitions, 2458 flow [2024-01-27 15:25:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 233 transitions, 2444 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:25:57,530 INFO L231 Difference]: Finished difference. Result has 98 places, 148 transitions, 1413 flow [2024-01-27 15:25:57,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1413, PETRI_PLACES=98, PETRI_TRANSITIONS=148} [2024-01-27 15:25:57,530 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-01-27 15:25:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 148 transitions, 1413 flow [2024-01-27 15:25:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:25:57,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:25:57,531 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:25:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:25:57,532 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:25:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:25:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1559093726, now seen corresponding path program 1 times [2024-01-27 15:25:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:25:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414692679] [2024-01-27 15:25:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:25:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:25:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:25:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:25:57,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:25:57,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414692679] [2024-01-27 15:25:57,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414692679] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:25:57,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:25:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:25:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845045137] [2024-01-27 15:25:57,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:25:57,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:25:57,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:25:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:25:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:25:57,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:25:57,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 148 transitions, 1413 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:25:57,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:25:57,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:25:57,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:00,469 INFO L124 PetriNetUnfolderBase]: 10412/15845 cut-off events. [2024-01-27 15:26:00,469 INFO L125 PetriNetUnfolderBase]: For 50272/50272 co-relation queries the response was YES. [2024-01-27 15:26:00,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51896 conditions, 15845 events. 10412/15845 cut-off events. For 50272/50272 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 105526 event pairs, 4005 based on Foata normal form. 4/15841 useless extension candidates. Maximal degree in co-relation 51799. Up to 11056 conditions per place. [2024-01-27 15:26:00,534 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 156 selfloop transitions, 15 changer transitions 45/220 dead transitions. [2024-01-27 15:26:00,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 220 transitions, 2413 flow [2024-01-27 15:26:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-01-27 15:26:00,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2024-01-27 15:26:00,536 INFO L175 Difference]: Start difference. First operand has 98 places, 148 transitions, 1413 flow. Second operand 4 states and 113 transitions. [2024-01-27 15:26:00,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 220 transitions, 2413 flow [2024-01-27 15:26:00,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 220 transitions, 2356 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-27 15:26:00,733 INFO L231 Difference]: Finished difference. Result has 99 places, 141 transitions, 1359 flow [2024-01-27 15:26:00,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1359, PETRI_PLACES=99, PETRI_TRANSITIONS=141} [2024-01-27 15:26:00,733 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2024-01-27 15:26:00,734 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 141 transitions, 1359 flow [2024-01-27 15:26:00,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:26:00,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:00,734 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:26:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:26:00,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:00,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1327783118, now seen corresponding path program 2 times [2024-01-27 15:26:00,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:00,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019976673] [2024-01-27 15:26:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:00,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:26:00,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019976673] [2024-01-27 15:26:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019976673] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169477851] [2024-01-27 15:26:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:00,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:00,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:00,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:00,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 141 transitions, 1359 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:26:00,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:00,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:00,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:02,778 INFO L124 PetriNetUnfolderBase]: 9032/13692 cut-off events. [2024-01-27 15:26:02,779 INFO L125 PetriNetUnfolderBase]: For 41823/41847 co-relation queries the response was YES. [2024-01-27 15:26:02,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44484 conditions, 13692 events. 9032/13692 cut-off events. For 41823/41847 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 88195 event pairs, 5183 based on Foata normal form. 20/13692 useless extension candidates. Maximal degree in co-relation 44407. Up to 9544 conditions per place. [2024-01-27 15:26:02,837 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 132 selfloop transitions, 2 changer transitions 50/188 dead transitions. [2024-01-27 15:26:02,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 188 transitions, 1939 flow [2024-01-27 15:26:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-27 15:26:02,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-01-27 15:26:02,839 INFO L175 Difference]: Start difference. First operand has 99 places, 141 transitions, 1359 flow. Second operand 4 states and 112 transitions. [2024-01-27 15:26:02,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 188 transitions, 1939 flow [2024-01-27 15:26:02,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 188 transitions, 1911 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-27 15:26:02,962 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 1050 flow [2024-01-27 15:26:02,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1050, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2024-01-27 15:26:02,963 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-01-27 15:26:02,963 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 1050 flow [2024-01-27 15:26:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:26:02,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:02,963 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:26:02,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:26:02,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:02,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash 730945250, now seen corresponding path program 2 times [2024-01-27 15:26:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:02,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024335366] [2024-01-27 15:26:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:02,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:26:03,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:03,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024335366] [2024-01-27 15:26:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024335366] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:03,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406028472] [2024-01-27 15:26:03,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:03,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:03,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:03,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 1050 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:26:03,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:03,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:03,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:04,638 INFO L124 PetriNetUnfolderBase]: 7394/11114 cut-off events. [2024-01-27 15:26:04,638 INFO L125 PetriNetUnfolderBase]: For 30538/30546 co-relation queries the response was YES. [2024-01-27 15:26:04,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35536 conditions, 11114 events. 7394/11114 cut-off events. For 30538/30546 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 68051 event pairs, 4741 based on Foata normal form. 2/11096 useless extension candidates. Maximal degree in co-relation 35505. Up to 9544 conditions per place. [2024-01-27 15:26:04,683 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 106 selfloop transitions, 0 changer transitions 36/146 dead transitions. [2024-01-27 15:26:04,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 146 transitions, 1415 flow [2024-01-27 15:26:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-01-27 15:26:04,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-01-27 15:26:04,684 INFO L175 Difference]: Start difference. First operand has 98 places, 119 transitions, 1050 flow. Second operand 4 states and 98 transitions. [2024-01-27 15:26:04,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 146 transitions, 1415 flow [2024-01-27 15:26:04,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 1318 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-01-27 15:26:04,826 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 829 flow [2024-01-27 15:26:04,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=829, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-01-27 15:26:04,827 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-01-27 15:26:04,827 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 829 flow [2024-01-27 15:26:04,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 15:26:04,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:04,827 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:04,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:26:04,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:04,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 484058854, now seen corresponding path program 1 times [2024-01-27 15:26:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860693572] [2024-01-27 15:26:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860693572] [2024-01-27 15:26:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860693572] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:05,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:05,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:26:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427925336] [2024-01-27 15:26:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:05,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:26:05,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:26:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:26:05,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:05,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 829 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:05,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:05,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:05,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:06,697 INFO L124 PetriNetUnfolderBase]: 7494/11308 cut-off events. [2024-01-27 15:26:06,697 INFO L125 PetriNetUnfolderBase]: For 20733/20741 co-relation queries the response was YES. [2024-01-27 15:26:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33146 conditions, 11308 events. 7494/11308 cut-off events. For 20733/20741 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 69928 event pairs, 2859 based on Foata normal form. 29/11267 useless extension candidates. Maximal degree in co-relation 33117. Up to 7652 conditions per place. [2024-01-27 15:26:06,761 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 133 selfloop transitions, 23 changer transitions 15/175 dead transitions. [2024-01-27 15:26:06,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 1463 flow [2024-01-27 15:26:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:26:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:26:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-01-27 15:26:06,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-01-27 15:26:06,763 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 829 flow. Second operand 5 states and 125 transitions. [2024-01-27 15:26:06,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 1463 flow [2024-01-27 15:26:06,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 175 transitions, 1357 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-01-27 15:26:06,833 INFO L231 Difference]: Finished difference. Result has 80 places, 110 transitions, 810 flow [2024-01-27 15:26:06,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=810, PETRI_PLACES=80, PETRI_TRANSITIONS=110} [2024-01-27 15:26:06,833 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-01-27 15:26:06,833 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 110 transitions, 810 flow [2024-01-27 15:26:06,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:06,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:06,834 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:06,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:26:06,834 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:06,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:06,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1499630022, now seen corresponding path program 2 times [2024-01-27 15:26:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:06,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659949229] [2024-01-27 15:26:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:06,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659949229] [2024-01-27 15:26:07,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659949229] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:07,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:07,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:26:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347007273] [2024-01-27 15:26:07,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:26:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:26:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:26:07,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:07,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 110 transitions, 810 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:07,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:07,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:07,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:08,721 INFO L124 PetriNetUnfolderBase]: 8062/12248 cut-off events. [2024-01-27 15:26:08,722 INFO L125 PetriNetUnfolderBase]: For 17423/17431 co-relation queries the response was YES. [2024-01-27 15:26:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33990 conditions, 12248 events. 8062/12248 cut-off events. For 17423/17431 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 77887 event pairs, 2967 based on Foata normal form. 31/12267 useless extension candidates. Maximal degree in co-relation 33967. Up to 8626 conditions per place. [2024-01-27 15:26:08,781 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 135 selfloop transitions, 21 changer transitions 17/177 dead transitions. [2024-01-27 15:26:08,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 177 transitions, 1415 flow [2024-01-27 15:26:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:26:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:26:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-01-27 15:26:08,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-01-27 15:26:08,783 INFO L175 Difference]: Start difference. First operand has 80 places, 110 transitions, 810 flow. Second operand 5 states and 127 transitions. [2024-01-27 15:26:08,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 177 transitions, 1415 flow [2024-01-27 15:26:08,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 177 transitions, 1391 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:26:08,806 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 837 flow [2024-01-27 15:26:08,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=837, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2024-01-27 15:26:08,807 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-01-27 15:26:08,807 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 837 flow [2024-01-27 15:26:08,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:08,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:08,807 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:26:08,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:08,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1527870758, now seen corresponding path program 3 times [2024-01-27 15:26:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858474400] [2024-01-27 15:26:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:09,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858474400] [2024-01-27 15:26:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858474400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:09,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:26:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972753669] [2024-01-27 15:26:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:09,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:26:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:26:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:26:09,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:09,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 837 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:09,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:09,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:09,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:10,727 INFO L124 PetriNetUnfolderBase]: 7920/11959 cut-off events. [2024-01-27 15:26:10,727 INFO L125 PetriNetUnfolderBase]: For 19222/19234 co-relation queries the response was YES. [2024-01-27 15:26:10,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33861 conditions, 11959 events. 7920/11959 cut-off events. For 19222/19234 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 75911 event pairs, 4343 based on Foata normal form. 35/11974 useless extension candidates. Maximal degree in co-relation 33837. Up to 8750 conditions per place. [2024-01-27 15:26:10,782 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 140 selfloop transitions, 7 changer transitions 18/169 dead transitions. [2024-01-27 15:26:10,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 169 transitions, 1344 flow [2024-01-27 15:26:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:26:10,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:26:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-01-27 15:26:10,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2024-01-27 15:26:10,785 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 837 flow. Second operand 5 states and 131 transitions. [2024-01-27 15:26:10,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 169 transitions, 1344 flow [2024-01-27 15:26:10,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 169 transitions, 1318 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:26:10,810 INFO L231 Difference]: Finished difference. Result has 86 places, 108 transitions, 808 flow [2024-01-27 15:26:10,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=808, PETRI_PLACES=86, PETRI_TRANSITIONS=108} [2024-01-27 15:26:10,811 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-01-27 15:26:10,811 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 108 transitions, 808 flow [2024-01-27 15:26:10,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:10,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:10,811 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:26:10,812 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:10,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1176274096, now seen corresponding path program 4 times [2024-01-27 15:26:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:10,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695053388] [2024-01-27 15:26:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695053388] [2024-01-27 15:26:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695053388] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:11,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:26:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391381507] [2024-01-27 15:26:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:26:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:26:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:26:11,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:11,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 108 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:11,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:11,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:11,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:12,758 INFO L124 PetriNetUnfolderBase]: 7860/11828 cut-off events. [2024-01-27 15:26:12,759 INFO L125 PetriNetUnfolderBase]: For 19266/19278 co-relation queries the response was YES. [2024-01-27 15:26:12,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33752 conditions, 11828 events. 7860/11828 cut-off events. For 19266/19278 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 74608 event pairs, 4447 based on Foata normal form. 5/11813 useless extension candidates. Maximal degree in co-relation 33727. Up to 8750 conditions per place. [2024-01-27 15:26:12,809 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 138 selfloop transitions, 9 changer transitions 5/156 dead transitions. [2024-01-27 15:26:12,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1273 flow [2024-01-27 15:26:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:26:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:26:12,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-27 15:26:12,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745098039215686 [2024-01-27 15:26:12,811 INFO L175 Difference]: Start difference. First operand has 86 places, 108 transitions, 808 flow. Second operand 5 states and 121 transitions. [2024-01-27 15:26:12,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1273 flow [2024-01-27 15:26:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 1249 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-27 15:26:12,836 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 853 flow [2024-01-27 15:26:12,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=853, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-01-27 15:26:12,837 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2024-01-27 15:26:12,837 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 853 flow [2024-01-27 15:26:12,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:12,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:12,837 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:12,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:26:12,837 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:12,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1990640748, now seen corresponding path program 5 times [2024-01-27 15:26:12,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:12,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991627594] [2024-01-27 15:26:12,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:12,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:13,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991627594] [2024-01-27 15:26:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991627594] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:13,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:26:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746142601] [2024-01-27 15:26:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:26:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:26:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:26:13,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:13,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 853 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:13,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:13,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:13,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:15,359 INFO L124 PetriNetUnfolderBase]: 10736/16102 cut-off events. [2024-01-27 15:26:15,360 INFO L125 PetriNetUnfolderBase]: For 33614/33626 co-relation queries the response was YES. [2024-01-27 15:26:15,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47505 conditions, 16102 events. 10736/16102 cut-off events. For 33614/33626 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 105699 event pairs, 3653 based on Foata normal form. 9/16031 useless extension candidates. Maximal degree in co-relation 47479. Up to 7518 conditions per place. [2024-01-27 15:26:15,438 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 151 selfloop transitions, 38 changer transitions 3/196 dead transitions. [2024-01-27 15:26:15,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 196 transitions, 1650 flow [2024-01-27 15:26:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:26:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:26:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-01-27 15:26:15,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2024-01-27 15:26:15,441 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 853 flow. Second operand 5 states and 143 transitions. [2024-01-27 15:26:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 196 transitions, 1650 flow [2024-01-27 15:26:15,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 196 transitions, 1634 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:15,511 INFO L231 Difference]: Finished difference. Result has 95 places, 129 transitions, 1171 flow [2024-01-27 15:26:15,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1171, PETRI_PLACES=95, PETRI_TRANSITIONS=129} [2024-01-27 15:26:15,512 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-01-27 15:26:15,512 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 129 transitions, 1171 flow [2024-01-27 15:26:15,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:15,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:15,512 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-27 15:26:15,512 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:15,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1175064984, now seen corresponding path program 6 times [2024-01-27 15:26:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020910274] [2024-01-27 15:26:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:15,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:15,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020910274] [2024-01-27 15:26:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020910274] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:15,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:26:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693183120] [2024-01-27 15:26:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:15,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:26:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:26:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:26:15,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:15,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 129 transitions, 1171 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:15,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:15,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:15,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:18,303 INFO L124 PetriNetUnfolderBase]: 10628/15980 cut-off events. [2024-01-27 15:26:18,303 INFO L125 PetriNetUnfolderBase]: For 49154/49198 co-relation queries the response was YES. [2024-01-27 15:26:18,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51486 conditions, 15980 events. 10628/15980 cut-off events. For 49154/49198 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 104963 event pairs, 3971 based on Foata normal form. 17/15917 useless extension candidates. Maximal degree in co-relation 51457. Up to 7518 conditions per place. [2024-01-27 15:26:18,389 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 151 selfloop transitions, 31 changer transitions 6/192 dead transitions. [2024-01-27 15:26:18,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 192 transitions, 1815 flow [2024-01-27 15:26:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:26:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:26:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-01-27 15:26:18,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-27 15:26:18,390 INFO L175 Difference]: Start difference. First operand has 95 places, 129 transitions, 1171 flow. Second operand 5 states and 136 transitions. [2024-01-27 15:26:18,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 192 transitions, 1815 flow [2024-01-27 15:26:18,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 192 transitions, 1765 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:18,531 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 1265 flow [2024-01-27 15:26:18,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1265, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2024-01-27 15:26:18,531 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-01-27 15:26:18,532 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 1265 flow [2024-01-27 15:26:18,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:26:18,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:18,532 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:26:18,532 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:18,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -284469373, now seen corresponding path program 1 times [2024-01-27 15:26:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989768691] [2024-01-27 15:26:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:18,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:18,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989768691] [2024-01-27 15:26:18,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989768691] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:18,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:18,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124259296] [2024-01-27 15:26:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:18,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:18,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:18,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 1265 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:18,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:18,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:18,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:20,883 INFO L124 PetriNetUnfolderBase]: 10616/16109 cut-off events. [2024-01-27 15:26:20,883 INFO L125 PetriNetUnfolderBase]: For 49057/49105 co-relation queries the response was YES. [2024-01-27 15:26:20,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52217 conditions, 16109 events. 10616/16109 cut-off events. For 49057/49105 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 107109 event pairs, 2727 based on Foata normal form. 100/16177 useless extension candidates. Maximal degree in co-relation 52186. Up to 10748 conditions per place. [2024-01-27 15:26:20,965 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 155 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2024-01-27 15:26:20,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 173 transitions, 1768 flow [2024-01-27 15:26:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-01-27 15:26:20,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-27 15:26:20,967 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 1265 flow. Second operand 4 states and 108 transitions. [2024-01-27 15:26:20,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 173 transitions, 1768 flow [2024-01-27 15:26:21,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 173 transitions, 1715 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-01-27 15:26:21,021 INFO L231 Difference]: Finished difference. Result has 103 places, 133 transitions, 1263 flow [2024-01-27 15:26:21,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1263, PETRI_PLACES=103, PETRI_TRANSITIONS=133} [2024-01-27 15:26:21,021 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-27 15:26:21,021 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 133 transitions, 1263 flow [2024-01-27 15:26:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:21,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:21,022 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:26:21,022 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:21,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash 868665641, now seen corresponding path program 1 times [2024-01-27 15:26:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:21,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042598147] [2024-01-27 15:26:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:21,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:21,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042598147] [2024-01-27 15:26:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042598147] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523930725] [2024-01-27 15:26:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:21,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:21,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 133 transitions, 1263 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:21,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:21,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:21,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:23,614 INFO L124 PetriNetUnfolderBase]: 11648/17745 cut-off events. [2024-01-27 15:26:23,615 INFO L125 PetriNetUnfolderBase]: For 52971/52971 co-relation queries the response was YES. [2024-01-27 15:26:23,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56129 conditions, 17745 events. 11648/17745 cut-off events. For 52971/52971 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 120327 event pairs, 2813 based on Foata normal form. 86/17823 useless extension candidates. Maximal degree in co-relation 56097. Up to 12646 conditions per place. [2024-01-27 15:26:23,698 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 160 selfloop transitions, 17 changer transitions 2/183 dead transitions. [2024-01-27 15:26:23,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 183 transitions, 1899 flow [2024-01-27 15:26:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-01-27 15:26:23,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2024-01-27 15:26:23,700 INFO L175 Difference]: Start difference. First operand has 103 places, 133 transitions, 1263 flow. Second operand 4 states and 109 transitions. [2024-01-27 15:26:23,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 183 transitions, 1899 flow [2024-01-27 15:26:23,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 183 transitions, 1888 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:23,796 INFO L231 Difference]: Finished difference. Result has 107 places, 137 transitions, 1366 flow [2024-01-27 15:26:23,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1366, PETRI_PLACES=107, PETRI_TRANSITIONS=137} [2024-01-27 15:26:23,796 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2024-01-27 15:26:23,796 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 137 transitions, 1366 flow [2024-01-27 15:26:23,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:23,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:23,797 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-27 15:26:23,797 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:23,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash 822207555, now seen corresponding path program 2 times [2024-01-27 15:26:23,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:23,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665580635] [2024-01-27 15:26:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:23,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:23,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665580635] [2024-01-27 15:26:23,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665580635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:23,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:23,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188574915] [2024-01-27 15:26:23,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:23,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:23,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 137 transitions, 1366 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:26,432 INFO L124 PetriNetUnfolderBase]: 11624/17679 cut-off events. [2024-01-27 15:26:26,433 INFO L125 PetriNetUnfolderBase]: For 56868/56868 co-relation queries the response was YES. [2024-01-27 15:26:26,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56609 conditions, 17679 events. 11624/17679 cut-off events. For 56868/56868 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 120228 event pairs, 3207 based on Foata normal form. 24/17695 useless extension candidates. Maximal degree in co-relation 56575. Up to 14674 conditions per place. [2024-01-27 15:26:26,517 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 154 selfloop transitions, 9 changer transitions 10/177 dead transitions. [2024-01-27 15:26:26,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1856 flow [2024-01-27 15:26:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-01-27 15:26:26,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-01-27 15:26:26,519 INFO L175 Difference]: Start difference. First operand has 107 places, 137 transitions, 1366 flow. Second operand 4 states and 107 transitions. [2024-01-27 15:26:26,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1856 flow [2024-01-27 15:26:26,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 177 transitions, 1842 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:26,610 INFO L231 Difference]: Finished difference. Result has 110 places, 132 transitions, 1316 flow [2024-01-27 15:26:26,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1316, PETRI_PLACES=110, PETRI_TRANSITIONS=132} [2024-01-27 15:26:26,611 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2024-01-27 15:26:26,611 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 132 transitions, 1316 flow [2024-01-27 15:26:26,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:26,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:26,611 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:26,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-27 15:26:26,611 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:26,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash -149842133, now seen corresponding path program 2 times [2024-01-27 15:26:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021433582] [2024-01-27 15:26:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:26,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:26,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:26,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021433582] [2024-01-27 15:26:26,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021433582] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:26,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:26,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:26,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255357116] [2024-01-27 15:26:26,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:26,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:26,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:26,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:26,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 132 transitions, 1316 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:26,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:26,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:26,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:29,288 INFO L124 PetriNetUnfolderBase]: 11418/17301 cut-off events. [2024-01-27 15:26:29,290 INFO L125 PetriNetUnfolderBase]: For 55314/55338 co-relation queries the response was YES. [2024-01-27 15:26:29,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55653 conditions, 17301 events. 11418/17301 cut-off events. For 55314/55338 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 117603 event pairs, 6773 based on Foata normal form. 24/17309 useless extension candidates. Maximal degree in co-relation 55619. Up to 13588 conditions per place. [2024-01-27 15:26:29,377 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 138 selfloop transitions, 4 changer transitions 13/159 dead transitions. [2024-01-27 15:26:29,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 159 transitions, 1673 flow [2024-01-27 15:26:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-01-27 15:26:29,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2024-01-27 15:26:29,382 INFO L175 Difference]: Start difference. First operand has 110 places, 132 transitions, 1316 flow. Second operand 4 states and 97 transitions. [2024-01-27 15:26:29,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 159 transitions, 1673 flow [2024-01-27 15:26:29,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 159 transitions, 1651 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:29,474 INFO L231 Difference]: Finished difference. Result has 112 places, 126 transitions, 1200 flow [2024-01-27 15:26:29,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1200, PETRI_PLACES=112, PETRI_TRANSITIONS=126} [2024-01-27 15:26:29,475 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2024-01-27 15:26:29,475 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 126 transitions, 1200 flow [2024-01-27 15:26:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:29,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:29,475 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:29,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-27 15:26:29,475 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:29,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1298264155, now seen corresponding path program 3 times [2024-01-27 15:26:29,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:29,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846168520] [2024-01-27 15:26:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:29,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846168520] [2024-01-27 15:26:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846168520] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:29,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084889417] [2024-01-27 15:26:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:29,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:29,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 126 transitions, 1200 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:29,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:29,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:29,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:31,790 INFO L124 PetriNetUnfolderBase]: 10716/16253 cut-off events. [2024-01-27 15:26:31,790 INFO L125 PetriNetUnfolderBase]: For 48525/48525 co-relation queries the response was YES. [2024-01-27 15:26:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51538 conditions, 16253 events. 10716/16253 cut-off events. For 48525/48525 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 108362 event pairs, 2897 based on Foata normal form. 24/16269 useless extension candidates. Maximal degree in co-relation 51503. Up to 13092 conditions per place. [2024-01-27 15:26:31,908 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 139 selfloop transitions, 8 changer transitions 12/163 dead transitions. [2024-01-27 15:26:31,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 163 transitions, 1631 flow [2024-01-27 15:26:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-01-27 15:26:31,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-01-27 15:26:31,909 INFO L175 Difference]: Start difference. First operand has 112 places, 126 transitions, 1200 flow. Second operand 4 states and 107 transitions. [2024-01-27 15:26:31,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 163 transitions, 1631 flow [2024-01-27 15:26:32,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 163 transitions, 1618 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:26:32,177 INFO L231 Difference]: Finished difference. Result has 109 places, 118 transitions, 1096 flow [2024-01-27 15:26:32,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1096, PETRI_PLACES=109, PETRI_TRANSITIONS=118} [2024-01-27 15:26:32,177 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2024-01-27 15:26:32,177 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 118 transitions, 1096 flow [2024-01-27 15:26:32,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:32,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:32,178 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:32,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-27 15:26:32,178 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:32,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1967317483, now seen corresponding path program 3 times [2024-01-27 15:26:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:32,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893239874] [2024-01-27 15:26:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:32,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893239874] [2024-01-27 15:26:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893239874] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:32,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783577550] [2024-01-27 15:26:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:32,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:32,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:32,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:32,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 1096 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:32,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:32,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:32,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:34,366 INFO L124 PetriNetUnfolderBase]: 10110/15391 cut-off events. [2024-01-27 15:26:34,367 INFO L125 PetriNetUnfolderBase]: For 44342/44342 co-relation queries the response was YES. [2024-01-27 15:26:34,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48147 conditions, 15391 events. 10110/15391 cut-off events. For 44342/44342 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 102254 event pairs, 2249 based on Foata normal form. 116/15499 useless extension candidates. Maximal degree in co-relation 48113. Up to 12176 conditions per place. [2024-01-27 15:26:34,490 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 139 selfloop transitions, 14 changer transitions 0/157 dead transitions. [2024-01-27 15:26:34,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 157 transitions, 1512 flow [2024-01-27 15:26:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-01-27 15:26:34,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-01-27 15:26:34,492 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 1096 flow. Second operand 4 states and 106 transitions. [2024-01-27 15:26:34,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 157 transitions, 1512 flow [2024-01-27 15:26:34,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 1446 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-01-27 15:26:34,598 INFO L231 Difference]: Finished difference. Result has 103 places, 116 transitions, 1032 flow [2024-01-27 15:26:34,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1032, PETRI_PLACES=103, PETRI_TRANSITIONS=116} [2024-01-27 15:26:34,599 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-27 15:26:34,599 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 116 transitions, 1032 flow [2024-01-27 15:26:34,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:34,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:34,599 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:34,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-27 15:26:34,600 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:34,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 872279763, now seen corresponding path program 4 times [2024-01-27 15:26:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326150198] [2024-01-27 15:26:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:34,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326150198] [2024-01-27 15:26:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326150198] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:34,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011537684] [2024-01-27 15:26:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:34,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:34,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:34,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:34,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 1032 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:34,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:34,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:34,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:36,794 INFO L124 PetriNetUnfolderBase]: 9728/14690 cut-off events. [2024-01-27 15:26:36,794 INFO L125 PetriNetUnfolderBase]: For 34394/34394 co-relation queries the response was YES. [2024-01-27 15:26:36,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46046 conditions, 14690 events. 9728/14690 cut-off events. For 34394/34394 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 95999 event pairs, 6215 based on Foata normal form. 28/14702 useless extension candidates. Maximal degree in co-relation 46016. Up to 12790 conditions per place. [2024-01-27 15:26:36,895 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 136 selfloop transitions, 3 changer transitions 2/145 dead transitions. [2024-01-27 15:26:36,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 145 transitions, 1396 flow [2024-01-27 15:26:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-01-27 15:26:36,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2024-01-27 15:26:36,897 INFO L175 Difference]: Start difference. First operand has 103 places, 116 transitions, 1032 flow. Second operand 4 states and 95 transitions. [2024-01-27 15:26:36,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 145 transitions, 1396 flow [2024-01-27 15:26:36,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 145 transitions, 1365 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-27 15:26:36,980 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 963 flow [2024-01-27 15:26:36,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=963, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2024-01-27 15:26:36,981 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-27 15:26:36,981 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 963 flow [2024-01-27 15:26:36,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:36,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:36,981 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:36,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-27 15:26:36,981 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:36,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash -288583097, now seen corresponding path program 4 times [2024-01-27 15:26:36,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:36,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844671375] [2024-01-27 15:26:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:36,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:37,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844671375] [2024-01-27 15:26:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844671375] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:37,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:37,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976755343] [2024-01-27 15:26:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:37,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:37,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:37,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:37,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 963 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:37,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:37,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:37,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:38,932 INFO L124 PetriNetUnfolderBase]: 8910/13550 cut-off events. [2024-01-27 15:26:38,932 INFO L125 PetriNetUnfolderBase]: For 29321/29321 co-relation queries the response was YES. [2024-01-27 15:26:38,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41432 conditions, 13550 events. 8910/13550 cut-off events. For 29321/29321 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 87633 event pairs, 2233 based on Foata normal form. 140/13682 useless extension candidates. Maximal degree in co-relation 41404. Up to 11592 conditions per place. [2024-01-27 15:26:39,004 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 123 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2024-01-27 15:26:39,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 138 transitions, 1260 flow [2024-01-27 15:26:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-01-27 15:26:39,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-01-27 15:26:39,005 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 963 flow. Second operand 4 states and 98 transitions. [2024-01-27 15:26:39,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 138 transitions, 1260 flow [2024-01-27 15:26:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 138 transitions, 1223 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-27 15:26:39,076 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 898 flow [2024-01-27 15:26:39,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=898, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2024-01-27 15:26:39,076 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-01-27 15:26:39,076 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 898 flow [2024-01-27 15:26:39,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:39,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:39,077 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:26:39,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-27 15:26:39,077 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:39,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:39,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1493153793, now seen corresponding path program 5 times [2024-01-27 15:26:39,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:39,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240933928] [2024-01-27 15:26:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:39,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240933928] [2024-01-27 15:26:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240933928] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:39,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:39,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:26:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908815026] [2024-01-27 15:26:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:39,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:26:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:26:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:26:39,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:39,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 898 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:39,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:39,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:39,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:40,845 INFO L124 PetriNetUnfolderBase]: 8450/12748 cut-off events. [2024-01-27 15:26:40,846 INFO L125 PetriNetUnfolderBase]: For 24154/24154 co-relation queries the response was YES. [2024-01-27 15:26:40,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38628 conditions, 12748 events. 8450/12748 cut-off events. For 24154/24154 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 80812 event pairs, 5583 based on Foata normal form. 24/12756 useless extension candidates. Maximal degree in co-relation 38602. Up to 11756 conditions per place. [2024-01-27 15:26:40,926 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 102 selfloop transitions, 0 changer transitions 15/121 dead transitions. [2024-01-27 15:26:40,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 121 transitions, 1134 flow [2024-01-27 15:26:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:26:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:26:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-01-27 15:26:40,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-01-27 15:26:40,927 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 898 flow. Second operand 4 states and 79 transitions. [2024-01-27 15:26:40,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 121 transitions, 1134 flow [2024-01-27 15:26:41,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 1108 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-27 15:26:41,002 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 802 flow [2024-01-27 15:26:41,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=802, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2024-01-27 15:26:41,002 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-01-27 15:26:41,003 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 802 flow [2024-01-27 15:26:41,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 15:26:41,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:41,003 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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, 1] [2024-01-27 15:26:41,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-27 15:26:41,003 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:41,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1270277314, now seen corresponding path program 1 times [2024-01-27 15:26:41,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:41,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846541368] [2024-01-27 15:26:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:26:41,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:41,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846541368] [2024-01-27 15:26:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846541368] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:41,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:41,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:26:41,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647545833] [2024-01-27 15:26:41,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:41,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:26:41,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:41,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:26:41,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:26:41,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:41,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 15:26:41,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:41,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:41,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:42,936 INFO L124 PetriNetUnfolderBase]: 9190/13888 cut-off events. [2024-01-27 15:26:42,936 INFO L125 PetriNetUnfolderBase]: For 24816/24816 co-relation queries the response was YES. [2024-01-27 15:26:42,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41143 conditions, 13888 events. 9190/13888 cut-off events. For 24816/24816 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 89291 event pairs, 5231 based on Foata normal form. 356/14230 useless extension candidates. Maximal degree in co-relation 41118. Up to 10648 conditions per place. [2024-01-27 15:26:43,020 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 112 selfloop transitions, 12 changer transitions 1/129 dead transitions. [2024-01-27 15:26:43,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 1150 flow [2024-01-27 15:26:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:26:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:26:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-27 15:26:43,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:26:43,022 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 802 flow. Second operand 3 states and 78 transitions. [2024-01-27 15:26:43,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 1150 flow [2024-01-27 15:26:43,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 129 transitions, 1130 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:43,064 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 833 flow [2024-01-27 15:26:43,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=833, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2024-01-27 15:26:43,065 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-01-27 15:26:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 833 flow [2024-01-27 15:26:43,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 15:26:43,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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, 1] [2024-01-27 15:26:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-27 15:26:43,066 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:43,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 931037879, now seen corresponding path program 1 times [2024-01-27 15:26:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812857505] [2024-01-27 15:26:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:26:43,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:43,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812857505] [2024-01-27 15:26:43,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812857505] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:26:43,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:26:43,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:26:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549888346] [2024-01-27 15:26:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:26:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:26:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:26:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:26:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:26:43,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:26:43,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 833 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 15:26:43,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:26:43,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:26:43,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:26:45,223 INFO L124 PetriNetUnfolderBase]: 9716/14758 cut-off events. [2024-01-27 15:26:45,224 INFO L125 PetriNetUnfolderBase]: For 30554/30554 co-relation queries the response was YES. [2024-01-27 15:26:45,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44334 conditions, 14758 events. 9716/14758 cut-off events. For 30554/30554 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 96256 event pairs, 5789 based on Foata normal form. 306/15048 useless extension candidates. Maximal degree in co-relation 44308. Up to 11766 conditions per place. [2024-01-27 15:26:45,299 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 112 selfloop transitions, 11 changer transitions 1/128 dead transitions. [2024-01-27 15:26:45,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 1165 flow [2024-01-27 15:26:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:26:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:26:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-27 15:26:45,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:26:45,300 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 833 flow. Second operand 3 states and 78 transitions. [2024-01-27 15:26:45,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 1165 flow [2024-01-27 15:26:45,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 128 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:26:45,317 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 872 flow [2024-01-27 15:26:45,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=872, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-01-27 15:26:45,318 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-01-27 15:26:45,318 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 872 flow [2024-01-27 15:26:45,318 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 15:26:45,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:26:45,318 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:26:45,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-27 15:26:45,319 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:26:45,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:26:45,319 INFO L85 PathProgramCache]: Analyzing trace with hash -2123840259, now seen corresponding path program 1 times [2024-01-27 15:26:45,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:26:45,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958534775] [2024-01-27 15:26:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:45,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:26:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:26:49,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:26:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958534775] [2024-01-27 15:26:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958534775] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:26:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895134784] [2024-01-27 15:26:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:26:49,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:26:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:26:49,751 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 15:26:49,751 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 15:26:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:26:50,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 61 conjunts are in the unsatisfiable core [2024-01-27 15:26:50,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:26:52,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:26:52,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 320 treesize of output 328 [2024-01-27 15:26:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:26:53,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:26:59,791 INFO L349 Elim1Store]: treesize reduction 13, result has 97.5 percent of original size [2024-01-27 15:26:59,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 415 treesize of output 825 [2024-01-27 15:27:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895134784] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:27:04,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:27:04,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-01-27 15:27:04,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906158310] [2024-01-27 15:27:04,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:27:04,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-01-27 15:27:04,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-01-27 15:27:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2024-01-27 15:27:04,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:04,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 872 flow. Second operand has 38 states, 38 states have (on average 9.736842105263158) internal successors, (370), 38 states have internal predecessors, (370), 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 15:27:04,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:04,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:04,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:17,779 INFO L124 PetriNetUnfolderBase]: 22632/34589 cut-off events. [2024-01-27 15:27:17,779 INFO L125 PetriNetUnfolderBase]: For 70886/70886 co-relation queries the response was YES. [2024-01-27 15:27:17,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102597 conditions, 34589 events. 22632/34589 cut-off events. For 70886/70886 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 255559 event pairs, 2625 based on Foata normal form. 5/34578 useless extension candidates. Maximal degree in co-relation 102570. Up to 5717 conditions per place. [2024-01-27 15:27:18,070 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 522 selfloop transitions, 157 changer transitions 22/705 dead transitions. [2024-01-27 15:27:18,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 705 transitions, 5728 flow [2024-01-27 15:27:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-01-27 15:27:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-01-27 15:27:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 684 transitions. [2024-01-27 15:27:18,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944636678200692 [2024-01-27 15:27:18,072 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 872 flow. Second operand 34 states and 684 transitions. [2024-01-27 15:27:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 705 transitions, 5728 flow [2024-01-27 15:27:18,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 705 transitions, 5651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:27:18,133 INFO L231 Difference]: Finished difference. Result has 146 places, 261 transitions, 2877 flow [2024-01-27 15:27:18,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2877, PETRI_PLACES=146, PETRI_TRANSITIONS=261} [2024-01-27 15:27:18,133 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-01-27 15:27:18,133 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 261 transitions, 2877 flow [2024-01-27 15:27:18,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.736842105263158) internal successors, (370), 38 states have internal predecessors, (370), 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 15:27:18,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:18,134 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:18,149 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 15:27:18,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:18,347 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:18,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1013001439, now seen corresponding path program 2 times [2024-01-27 15:27:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:18,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713438592] [2024-01-27 15:27:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:22,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713438592] [2024-01-27 15:27:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713438592] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:27:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741099344] [2024-01-27 15:27:22,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:27:22,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:27:22,628 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 15:27:22,628 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 15:27:22,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:27:22,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:27:22,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 73 conjunts are in the unsatisfiable core [2024-01-27 15:27:22,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:27:25,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:27:25,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 389 treesize of output 529 [2024-01-27 15:27:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:26,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:28:35,371 WARN L293 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 3023 DAG size of output: 2183 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-01-27 15:28:35,372 INFO L349 Elim1Store]: treesize reduction 3080, result has 66.9 percent of original size [2024-01-27 15:28:35,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 46 select indices, 46 select index equivalence classes, 0 disjoint index pairs (out of 1035 index pairs), introduced 46 new quantified variables, introduced 1035 case distinctions, treesize of input 1035 treesize of output 6888 [2024-01-27 15:34:43,141 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 15:34:43,142 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-01-27 15:34:43,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-01-27 15:34:43,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-01-27 15:34:43,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:34:43,343 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.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:516) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.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.SimplifyDDA2.simplify(SimplifyDDA2.java:606) 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:140) 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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) 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) ... 69 more [2024-01-27 15:34:43,350 INFO L158 Benchmark]: Toolchain (without parser) took 554677.27ms. Allocated memory was 174.1MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 145.1MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. [2024-01-27 15:34:43,350 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 100.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:34:43,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.58ms. Allocated memory is still 174.1MB. Free memory was 144.9MB in the beginning and 134.7MB in the end (delta: 10.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-01-27 15:34:43,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.51ms. Allocated memory is still 174.1MB. Free memory was 134.7MB in the beginning and 130.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:34:43,350 INFO L158 Benchmark]: Boogie Preprocessor took 72.80ms. Allocated memory is still 174.1MB. Free memory was 130.5MB in the beginning and 125.5MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:34:43,350 INFO L158 Benchmark]: RCFGBuilder took 1469.98ms. Allocated memory was 174.1MB in the beginning and 241.2MB in the end (delta: 67.1MB). Free memory was 124.7MB in the beginning and 169.7MB in the end (delta: -45.1MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. [2024-01-27 15:34:43,351 INFO L158 Benchmark]: TraceAbstraction took 552827.41ms. Allocated memory was 241.2MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 169.7MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. [2024-01-27 15:34:43,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 100.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.58ms. Allocated memory is still 174.1MB. Free memory was 144.9MB in the beginning and 134.7MB in the end (delta: 10.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.51ms. Allocated memory is still 174.1MB. Free memory was 134.7MB in the beginning and 130.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.80ms. Allocated memory is still 174.1MB. Free memory was 130.5MB in the beginning and 125.5MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1469.98ms. Allocated memory was 174.1MB in the beginning and 241.2MB in the end (delta: 67.1MB). Free memory was 124.7MB in the beginning and 169.7MB in the end (delta: -45.1MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. * TraceAbstraction took 552827.41ms. Allocated memory was 241.2MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 169.7MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 3.7GB. 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-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:34:45,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:34:45,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-27 15:34:45,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:34:45,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:34:45,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:34:45,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:34:45,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:34:45,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:34:45,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:34:45,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:34:45,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:34:45,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:34:45,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:34:45,636 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:34:45,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:34:45,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:34:45,637 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:34:45,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:34:45,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:34:45,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:34:45,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:34:45,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:34:45,639 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-27 15:34:45,639 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-27 15:34:45,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:34:45,639 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-27 15:34:45,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:34:45,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:34:45,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:34:45,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:34:45,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:34:45,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:34:45,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:34:45,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:34:45,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:34:45,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:34:45,642 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:34:45,642 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-27 15:34:45,643 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-27 15:34:45,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:34:45,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:34:45,643 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:34:45,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:34:45,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:34:45,644 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-27 15:34:45,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-01-27 15:34:45,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:34:45,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:34:45,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:34:45,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:34:45,954 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:34:45,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2024-01-27 15:34:47,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:34:47,265 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:34:47,266 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2024-01-27 15:34:47,275 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/479868434/f4ab4e4e38ea45d38759a5885887b1d9/FLAG067930595 [2024-01-27 15:34:47,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/479868434/f4ab4e4e38ea45d38759a5885887b1d9 [2024-01-27 15:34:47,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:34:47,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:34:47,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:34:47,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:34:47,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:34:47,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:47,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a529ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47, skipping insertion in model container [2024-01-27 15:34:47,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:47,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:34:47,855 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-nzb-file-subst.wvr.c[6540,6553] [2024-01-27 15:34:47,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:34:47,882 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:34:47,938 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-nzb-file-subst.wvr.c[6540,6553] [2024-01-27 15:34:47,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:34:47,954 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:34:47,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47 WrapperNode [2024-01-27 15:34:47,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:34:47,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:34:47,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:34:47,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:34:47,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:47,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,016 INFO L138 Inliner]: procedures = 28, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 588 [2024-01-27 15:34:48,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:34:48,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:34:48,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:34:48,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:34:48,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,043 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 27, 2, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2024-01-27 15:34:48,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:34:48,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:34:48,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:34:48,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:34:48,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (1/1) ... [2024-01-27 15:34:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:34:48,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:34:48,091 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 15:34:48,121 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 15:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-01-27 15:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-27 15:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-01-27 15:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:34:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:34:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:34:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:34:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:34:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:34:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:34:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:34:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-27 15:34:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-27 15:34:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-27 15:34:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-01-27 15:34:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-01-27 15:34:48,145 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 15:34:48,271 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:34:48,273 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:34:48,916 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:34:48,917 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:34:49,443 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:34:49,443 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 15:34:49,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:34:49 BoogieIcfgContainer [2024-01-27 15:34:49,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:34:49,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:34:49,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:34:49,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:34:49,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:34:47" (1/3) ... [2024-01-27 15:34:49,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2b90a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:34:49, skipping insertion in model container [2024-01-27 15:34:49,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:34:47" (2/3) ... [2024-01-27 15:34:49,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2b90a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:34:49, skipping insertion in model container [2024-01-27 15:34:49,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:34:49" (3/3) ... [2024-01-27 15:34:49,448 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-01-27 15:34:49,455 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:34:49,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:34:49,462 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:34:49,462 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:34:49,566 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:34:49,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:34:49,614 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-27 15:34:49,614 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:34:49,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-27 15:34:49,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:34:49,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-27 15:34:49,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:34:49,637 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;@5faf66d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:34:49,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:34:49,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:34:49,654 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-27 15:34:49,654 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:34:49,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:49,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:34:49,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:34:49,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1711700766, now seen corresponding path program 1 times [2024-01-27 15:34:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:34:49,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783857158] [2024-01-27 15:34:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:49,669 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 15:34:49,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:34:49,671 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 15:34:49,724 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 15:34:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:49,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:34:49,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:34:49,947 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 15:34:49,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:34:49,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:34:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783857158] [2024-01-27 15:34:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783857158] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:49,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:49,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:34:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103353642] [2024-01-27 15:34:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:34:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:34:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:34:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:34:49,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:34:49,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:34:49,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:49,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:34:49,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:50,555 INFO L124 PetriNetUnfolderBase]: 1664/2361 cut-off events. [2024-01-27 15:34:50,555 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-27 15:34:50,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2361 events. 1664/2361 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9842 event pairs, 1125 based on Foata normal form. 268/2082 useless extension candidates. Maximal degree in co-relation 4159. Up to 2271 conditions per place. [2024-01-27 15:34:50,570 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-01-27 15:34:50,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 198 flow [2024-01-27 15:34:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:34:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:34:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-27 15:34:50,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-01-27 15:34:50,586 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 3 states and 70 transitions. [2024-01-27 15:34:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 198 flow [2024-01-27 15:34:50,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:34:50,595 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 126 flow [2024-01-27 15:34:50,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2024-01-27 15:34:50,600 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-01-27 15:34:50,600 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 126 flow [2024-01-27 15:34:50,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:34:50,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:50,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:34:50,605 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 15:34:50,804 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 15:34:50,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:34:50,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1708288633, now seen corresponding path program 1 times [2024-01-27 15:34:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:34:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801837323] [2024-01-27 15:34:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:34:50,806 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 15:34:50,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:34:50,807 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 15:34:50,817 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 15:34:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:34:51,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:34:51,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:34:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:34:51,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:34:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:34:51,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:34:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801837323] [2024-01-27 15:34:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801837323] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:34:51,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:34:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-01-27 15:34:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553780926] [2024-01-27 15:34:51,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 15:34:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:34:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:34:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:34:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:34:51,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:34:51,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 15:34:51,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:51,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:34:51,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:34:51,673 INFO L124 PetriNetUnfolderBase]: 1664/2370 cut-off events. [2024-01-27 15:34:51,673 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-27 15:34:51,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2370 events. 1664/2370 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9852 event pairs, 1125 based on Foata normal form. 6/1831 useless extension candidates. Maximal degree in co-relation 4672. Up to 2271 conditions per place. [2024-01-27 15:34:51,681 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 37 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2024-01-27 15:34:51,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 266 flow [2024-01-27 15:34:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:34:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:34:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-01-27 15:34:51,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366013071895425 [2024-01-27 15:34:51,683 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 126 flow. Second operand 6 states and 103 transitions. [2024-01-27 15:34:51,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 266 flow [2024-01-27 15:34:51,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:34:51,685 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 216 flow [2024-01-27 15:34:51,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2024-01-27 15:34:51,686 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-01-27 15:34:51,686 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 216 flow [2024-01-27 15:34:51,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 15:34:51,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:34:51,686 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 15:34:51,690 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 (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:34:51,890 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 15:34:51,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:34:51,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:34:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1568320592, now seen corresponding path program 2 times [2024-01-27 15:34:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:34:51,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263284799] [2024-01-27 15:34:51,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:34:51,892 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 15:34:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:34:51,893 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 15:34:51,921 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 15:34:52,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:34:52,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:34:52,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:34:52,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:34:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:34:58,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:34:58,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:34:58,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263284799] [2024-01-27 15:34:58,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263284799] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:34:58,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:34:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:34:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751474977] [2024-01-27 15:34:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:34:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:34:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:34:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:34:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:34:58,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:34:58,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:34:58,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:34:58,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:34:58,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:10,017 WARN L293 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 131 DAG size of output: 288 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:35:12,534 INFO L124 PetriNetUnfolderBase]: 2446/3561 cut-off events. [2024-01-27 15:35:12,534 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-01-27 15:35:12,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 3561 events. 2446/3561 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16985 event pairs, 1125 based on Foata normal form. 1/2808 useless extension candidates. Maximal degree in co-relation 7063. Up to 2197 conditions per place. [2024-01-27 15:35:12,551 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 100 selfloop transitions, 5 changer transitions 3/112 dead transitions. [2024-01-27 15:35:12,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 112 transitions, 556 flow [2024-01-27 15:35:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:35:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:35:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-01-27 15:35:12,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2024-01-27 15:35:12,554 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 216 flow. Second operand 5 states and 132 transitions. [2024-01-27 15:35:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 112 transitions, 556 flow [2024-01-27 15:35:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 112 transitions, 532 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-27 15:35:12,573 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 231 flow [2024-01-27 15:35:12,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2024-01-27 15:35:12,574 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-01-27 15:35:12,575 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 231 flow [2024-01-27 15:35:12,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:35:12,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:35:12,575 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 15:35:12,585 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 15:35:12,778 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 15:35:12,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:35:12,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:35:12,779 INFO L85 PathProgramCache]: Analyzing trace with hash 178933846, now seen corresponding path program 3 times [2024-01-27 15:35:12,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:35:12,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555425248] [2024-01-27 15:35:12,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:35:12,780 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 15:35:12,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:35:12,781 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 15:35:12,812 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 [2024-01-27 15:35:12,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:35:12,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:35:12,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:35:12,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:35:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:35:21,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:35:21,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:35:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555425248] [2024-01-27 15:35:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555425248] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:35:21,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:35:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:35:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457776426] [2024-01-27 15:35:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:35:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:35:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:35:21,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:35:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:35:21,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:35:21,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:35:21,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:35:21,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:35:21,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:35:30,966 WARN L293 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 89 DAG size of output: 203 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:35:58,159 WARN L293 SmtUtils]: Spent 25.43s on a formula simplification. DAG size of input: 164 DAG size of output: 426 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:36:03,453 INFO L124 PetriNetUnfolderBase]: 3120/4637 cut-off events. [2024-01-27 15:36:03,453 INFO L125 PetriNetUnfolderBase]: For 1163/1163 co-relation queries the response was YES. [2024-01-27 15:36:03,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10390 conditions, 4637 events. 3120/4637 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23684 event pairs, 1671 based on Foata normal form. 1/4170 useless extension candidates. Maximal degree in co-relation 10310. Up to 2965 conditions per place. [2024-01-27 15:36:03,471 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 92 selfloop transitions, 3 changer transitions 10/109 dead transitions. [2024-01-27 15:36:03,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 567 flow [2024-01-27 15:36:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:36:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:36:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-01-27 15:36:03,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-01-27 15:36:03,473 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 231 flow. Second operand 5 states and 125 transitions. [2024-01-27 15:36:03,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 567 flow [2024-01-27 15:36:03,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 558 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 15:36:03,481 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 248 flow [2024-01-27 15:36:03,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-01-27 15:36:03,481 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-01-27 15:36:03,482 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 248 flow [2024-01-27 15:36:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:36:03,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:03,482 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 15:36:03,503 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 (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:36:03,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 15:36:03,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:36:03,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash 513766764, now seen corresponding path program 4 times [2024-01-27 15:36:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:03,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624684783] [2024-01-27 15:36:03,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:36:03,688 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 15:36:03,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:03,689 INFO L229 MonitoredProcess]: Starting monitored process 6 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 15:36:03,691 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 (6)] Waiting until timeout for monitored process [2024-01-27 15:36:03,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:36:03,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:36:03,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:36:03,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:36:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:36:03,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:36:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:36:04,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:36:04,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624684783] [2024-01-27 15:36:04,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624684783] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:36:04,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:36:04,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-01-27 15:36:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42950932] [2024-01-27 15:36:04,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 15:36:04,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 15:36:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:36:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 15:36:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-01-27 15:36:04,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:36:04,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:04,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:36:04,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:36:04,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:36:05,536 INFO L124 PetriNetUnfolderBase]: 3086/4607 cut-off events. [2024-01-27 15:36:05,537 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-01-27 15:36:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 4607 events. 3086/4607 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23319 event pairs, 2433 based on Foata normal form. 1/4300 useless extension candidates. Maximal degree in co-relation 10721. Up to 4465 conditions per place. [2024-01-27 15:36:05,565 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 42 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2024-01-27 15:36:05,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 386 flow [2024-01-27 15:36:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:36:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:36:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-01-27 15:36:05,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29971988795518206 [2024-01-27 15:36:05,567 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 248 flow. Second operand 7 states and 107 transitions. [2024-01-27 15:36:05,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 386 flow [2024-01-27 15:36:05,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 382 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:36:05,575 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 312 flow [2024-01-27 15:36:05,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-01-27 15:36:05,575 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-01-27 15:36:05,576 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 312 flow [2024-01-27 15:36:05,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:36:05,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:05,576 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:36:05,583 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 (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:36:05,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 15:36:05,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:36:05,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash 304621933, now seen corresponding path program 5 times [2024-01-27 15:36:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436621813] [2024-01-27 15:36:05,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:36:05,782 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 15:36:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:05,783 INFO L229 MonitoredProcess]: Starting monitored process 7 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 15:36:05,784 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 (7)] Waiting until timeout for monitored process [2024-01-27 15:36:06,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-27 15:36:06,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:36:06,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:36:06,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:36:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:36:15,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:36:15,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:36:15,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436621813] [2024-01-27 15:36:15,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436621813] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:36:15,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:36:15,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:36:15,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340800002] [2024-01-27 15:36:15,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:36:15,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:36:15,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:36:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:36:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:36:15,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:36:15,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:36:15,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:36:15,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:36:15,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:36:31,603 WARN L293 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 157 DAG size of output: 381 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:36:35,634 INFO L124 PetriNetUnfolderBase]: 3728/5626 cut-off events. [2024-01-27 15:36:35,634 INFO L125 PetriNetUnfolderBase]: For 2219/2219 co-relation queries the response was YES. [2024-01-27 15:36:35,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12971 conditions, 5626 events. 3728/5626 cut-off events. For 2219/2219 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29701 event pairs, 2347 based on Foata normal form. 1/5249 useless extension candidates. Maximal degree in co-relation 12857. Up to 4112 conditions per place. [2024-01-27 15:36:35,662 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 94 selfloop transitions, 4 changer transitions 10/112 dead transitions. [2024-01-27 15:36:35,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 112 transitions, 651 flow [2024-01-27 15:36:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:36:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:36:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-01-27 15:36:35,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2024-01-27 15:36:35,664 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 312 flow. Second operand 5 states and 123 transitions. [2024-01-27 15:36:35,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 112 transitions, 651 flow [2024-01-27 15:36:35,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 112 transitions, 615 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:36:35,672 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 312 flow [2024-01-27 15:36:35,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-01-27 15:36:35,672 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-01-27 15:36:35,672 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 312 flow [2024-01-27 15:36:35,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:36:35,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:35,673 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:36:35,678 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 (7)] Ended with exit code 0 [2024-01-27 15:36:35,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 15:36:35,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:36:35,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:35,879 INFO L85 PathProgramCache]: Analyzing trace with hash -456260531, now seen corresponding path program 6 times [2024-01-27 15:36:35,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:35,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903339312] [2024-01-27 15:36:35,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:36:35,879 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 15:36:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:35,881 INFO L229 MonitoredProcess]: Starting monitored process 8 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 15:36:35,918 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 (8)] Waiting until timeout for monitored process [2024-01-27 15:36:36,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:36:36,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:36:36,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:36:36,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:36:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:36:44,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:36:44,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:36:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903339312] [2024-01-27 15:36:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903339312] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:36:44,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:36:44,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:36:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185920653] [2024-01-27 15:36:44,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:36:44,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:36:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:36:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:36:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:36:44,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:36:44,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:36:44,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:36:44,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:36:44,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:36:54,465 WARN L293 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 133 DAG size of output: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:36:58,856 INFO L124 PetriNetUnfolderBase]: 3748/5627 cut-off events. [2024-01-27 15:36:58,856 INFO L125 PetriNetUnfolderBase]: For 4405/4405 co-relation queries the response was YES. [2024-01-27 15:36:58,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13520 conditions, 5627 events. 3748/5627 cut-off events. For 4405/4405 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29940 event pairs, 2183 based on Foata normal form. 1/5258 useless extension candidates. Maximal degree in co-relation 13462. Up to 3680 conditions per place. [2024-01-27 15:36:58,875 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 104 selfloop transitions, 8 changer transitions 3/119 dead transitions. [2024-01-27 15:36:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 119 transitions, 694 flow [2024-01-27 15:36:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:36:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:36:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-01-27 15:36:58,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:36:58,892 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 312 flow. Second operand 5 states and 130 transitions. [2024-01-27 15:36:58,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 119 transitions, 694 flow [2024-01-27 15:36:58,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 119 transitions, 685 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:36:58,904 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 368 flow [2024-01-27 15:36:58,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-01-27 15:36:58,904 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-01-27 15:36:58,904 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 368 flow [2024-01-27 15:36:58,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:36:58,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:36:58,905 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:36:58,921 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 (8)] Ended with exit code 0 [2024-01-27 15:36:59,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 15:36:59,111 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:36:59,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:36:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash 334061155, now seen corresponding path program 7 times [2024-01-27 15:36:59,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:36:59,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473021076] [2024-01-27 15:36:59,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-27 15:36:59,112 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 15:36:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:36:59,113 INFO L229 MonitoredProcess]: Starting monitored process 9 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 15:36:59,116 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 (9)] Waiting until timeout for monitored process [2024-01-27 15:36:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:36:59,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 15:36:59,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:37:06,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:06,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:06,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473021076] [2024-01-27 15:37:06,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473021076] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:06,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:06,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:06,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878270991] [2024-01-27 15:37:06,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:06,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:06,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:37:06,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:06,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:06,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:22,137 WARN L293 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 134 DAG size of output: 305 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:37:25,406 INFO L124 PetriNetUnfolderBase]: 3856/5802 cut-off events. [2024-01-27 15:37:25,406 INFO L125 PetriNetUnfolderBase]: For 7439/7439 co-relation queries the response was YES. [2024-01-27 15:37:25,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14874 conditions, 5802 events. 3856/5802 cut-off events. For 7439/7439 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 31259 event pairs, 2221 based on Foata normal form. 1/5411 useless extension candidates. Maximal degree in co-relation 14772. Up to 3624 conditions per place. [2024-01-27 15:37:25,438 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 103 selfloop transitions, 3 changer transitions 10/120 dead transitions. [2024-01-27 15:37:25,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 120 transitions, 746 flow [2024-01-27 15:37:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-01-27 15:37:25,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-01-27 15:37:25,442 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 368 flow. Second operand 5 states and 127 transitions. [2024-01-27 15:37:25,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 120 transitions, 746 flow [2024-01-27 15:37:25,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 725 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:25,460 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 376 flow [2024-01-27 15:37:25,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-01-27 15:37:25,463 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-27 15:37:25,465 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 376 flow [2024-01-27 15:37:25,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:37:25,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:25,465 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 15:37:25,475 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 (9)] Forceful destruction successful, exit code 0 [2024-01-27 15:37:25,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 15:37:25,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:37:25,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash 41453229, now seen corresponding path program 8 times [2024-01-27 15:37:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:37:25,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887746841] [2024-01-27 15:37:25,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:37:25,673 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 15:37:25,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:37:25,674 INFO L229 MonitoredProcess]: Starting monitored process 10 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 15:37:25,709 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 (10)] Waiting until timeout for monitored process [2024-01-27 15:37:25,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:37:25,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:37:25,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:37:25,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:37:34,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:34,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:34,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887746841] [2024-01-27 15:37:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887746841] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:34,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:34,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:34,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950260374] [2024-01-27 15:37:34,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:34,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:34,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:34,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:34,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:37:34,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:34,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:34,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:38,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-01-27 15:37:45,539 WARN L293 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 144 DAG size of output: 313 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:37:49,329 INFO L124 PetriNetUnfolderBase]: 3866/5849 cut-off events. [2024-01-27 15:37:49,329 INFO L125 PetriNetUnfolderBase]: For 7265/7265 co-relation queries the response was YES. [2024-01-27 15:37:49,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14905 conditions, 5849 events. 3866/5849 cut-off events. For 7265/7265 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31410 event pairs, 2403 based on Foata normal form. 1/5440 useless extension candidates. Maximal degree in co-relation 14842. Up to 4194 conditions per place. [2024-01-27 15:37:49,370 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 103 selfloop transitions, 7 changer transitions 5/119 dead transitions. [2024-01-27 15:37:49,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 722 flow [2024-01-27 15:37:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-01-27 15:37:49,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2024-01-27 15:37:49,389 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 376 flow. Second operand 5 states and 126 transitions. [2024-01-27 15:37:49,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 722 flow [2024-01-27 15:37:49,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 713 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:37:49,423 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 405 flow [2024-01-27 15:37:49,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-01-27 15:37:49,425 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2024-01-27 15:37:49,425 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 405 flow [2024-01-27 15:37:49,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 15:37:49,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:49,426 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:37:49,432 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 (10)] Forceful destruction successful, exit code 0 [2024-01-27 15:37:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 15:37:49,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:37:49,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:49,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2050317178, now seen corresponding path program 1 times [2024-01-27 15:37:49,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:37:49,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122825795] [2024-01-27 15:37:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:49,633 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 15:37:49,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:37:49,634 INFO L229 MonitoredProcess]: Starting monitored process 11 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 15:37:49,640 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 (11)] Waiting until timeout for monitored process [2024-01-27 15:37:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:49,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:37:49,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:37:49,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:49,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:49,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122825795] [2024-01-27 15:37:49,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122825795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:49,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:49,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:37:49,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292110284] [2024-01-27 15:37:49,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:37:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:37:49,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:37:49,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:49,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:37:49,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:49,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:49,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:51,143 INFO L124 PetriNetUnfolderBase]: 4684/7190 cut-off events. [2024-01-27 15:37:51,156 INFO L125 PetriNetUnfolderBase]: For 11169/11169 co-relation queries the response was YES. [2024-01-27 15:37:51,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19025 conditions, 7190 events. 4684/7190 cut-off events. For 11169/11169 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 41362 event pairs, 3197 based on Foata normal form. 200/7170 useless extension candidates. Maximal degree in co-relation 18918. Up to 5576 conditions per place. [2024-01-27 15:37:51,188 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 87 selfloop transitions, 4 changer transitions 1/96 dead transitions. [2024-01-27 15:37:51,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 96 transitions, 687 flow [2024-01-27 15:37:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:37:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:37:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-01-27 15:37:51,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-01-27 15:37:51,190 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 405 flow. Second operand 3 states and 83 transitions. [2024-01-27 15:37:51,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 96 transitions, 687 flow [2024-01-27 15:37:51,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 678 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:37:51,213 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 413 flow [2024-01-27 15:37:51,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-01-27 15:37:51,214 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-01-27 15:37:51,214 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 413 flow [2024-01-27 15:37:51,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:37:51,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:51,214 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:37:51,238 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 (11)] Forceful destruction successful, exit code 0 [2024-01-27 15:37:51,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 15:37:51,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:37:51,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 753737982, now seen corresponding path program 1 times [2024-01-27 15:37:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:37:51,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027275860] [2024-01-27 15:37:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:51,420 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 15:37:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:37:51,421 INFO L229 MonitoredProcess]: Starting monitored process 12 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 15:37:51,425 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 (12)] Waiting until timeout for monitored process [2024-01-27 15:37:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:51,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:37:51,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:37:51,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:51,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027275860] [2024-01-27 15:37:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027275860] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:51,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:51,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:37:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994237588] [2024-01-27 15:37:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:51,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:37:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:51,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:37:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:37:51,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:51,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:37:51,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:51,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:51,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:53,058 INFO L124 PetriNetUnfolderBase]: 5672/8690 cut-off events. [2024-01-27 15:37:53,058 INFO L125 PetriNetUnfolderBase]: For 14095/14095 co-relation queries the response was YES. [2024-01-27 15:37:53,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24007 conditions, 8690 events. 5672/8690 cut-off events. For 14095/14095 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 52405 event pairs, 3961 based on Foata normal form. 250/8668 useless extension candidates. Maximal degree in co-relation 23900. Up to 6732 conditions per place. [2024-01-27 15:37:53,093 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 85 selfloop transitions, 6 changer transitions 1/96 dead transitions. [2024-01-27 15:37:53,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 96 transitions, 695 flow [2024-01-27 15:37:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:37:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:37:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-01-27 15:37:53,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-01-27 15:37:53,094 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 413 flow. Second operand 3 states and 83 transitions. [2024-01-27 15:37:53,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 96 transitions, 695 flow [2024-01-27 15:37:53,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 96 transitions, 681 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:53,111 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 421 flow [2024-01-27 15:37:53,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-01-27 15:37:53,112 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-01-27 15:37:53,112 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 421 flow [2024-01-27 15:37:53,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:37:53,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:53,113 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 15:37:53,132 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 (12)] Forceful destruction successful, exit code 0 [2024-01-27 15:37:53,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 15:37:53,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:37:53,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2007312352, now seen corresponding path program 1 times [2024-01-27 15:37:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:37:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196868170] [2024-01-27 15:37:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:53,319 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 15:37:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:37:53,320 INFO L229 MonitoredProcess]: Starting monitored process 13 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 15:37:53,355 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 (13)] Waiting until timeout for monitored process [2024-01-27 15:37:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:53,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:37:53,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:37:53,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:53,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196868170] [2024-01-27 15:37:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196868170] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:37:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481829087] [2024-01-27 15:37:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:37:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:37:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:37:53,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:53,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:37:53,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:53,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:53,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:55,288 INFO L124 PetriNetUnfolderBase]: 6780/10344 cut-off events. [2024-01-27 15:37:55,288 INFO L125 PetriNetUnfolderBase]: For 18304/18304 co-relation queries the response was YES. [2024-01-27 15:37:55,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28898 conditions, 10344 events. 6780/10344 cut-off events. For 18304/18304 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 64866 event pairs, 4949 based on Foata normal form. 230/10056 useless extension candidates. Maximal degree in co-relation 28790. Up to 8300 conditions per place. [2024-01-27 15:37:55,329 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 91 selfloop transitions, 2 changer transitions 1/98 dead transitions. [2024-01-27 15:37:55,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 739 flow [2024-01-27 15:37:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:37:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:37:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-01-27 15:37:55,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-01-27 15:37:55,331 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 421 flow. Second operand 3 states and 83 transitions. [2024-01-27 15:37:55,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 739 flow [2024-01-27 15:37:55,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 98 transitions, 715 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:55,355 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 419 flow [2024-01-27 15:37:55,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-01-27 15:37:55,357 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-01-27 15:37:55,357 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 419 flow [2024-01-27 15:37:55,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 15:37:55,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:55,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:37:55,365 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 (13)] Forceful destruction successful, exit code 0 [2024-01-27 15:37:55,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 15:37:55,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:37:55,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1442598177, now seen corresponding path program 1 times [2024-01-27 15:37:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:37:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402116627] [2024-01-27 15:37:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:55,570 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 15:37:55,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:37:55,571 INFO L229 MonitoredProcess]: Starting monitored process 14 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 15:37:55,572 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 (14)] Waiting until timeout for monitored process [2024-01-27 15:37:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:55,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:37:55,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:37:55,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:55,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402116627] [2024-01-27 15:37:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402116627] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:55,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:55,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:37:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488483774] [2024-01-27 15:37:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:55,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:37:55,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:37:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:37:55,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:55,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:37:55,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:55,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:55,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:58,172 INFO L124 PetriNetUnfolderBase]: 7630/11582 cut-off events. [2024-01-27 15:37:58,173 INFO L125 PetriNetUnfolderBase]: For 17226/17226 co-relation queries the response was YES. [2024-01-27 15:37:58,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32082 conditions, 11582 events. 7630/11582 cut-off events. For 17226/17226 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 74210 event pairs, 4461 based on Foata normal form. 3/11553 useless extension candidates. Maximal degree in co-relation 31973. Up to 7008 conditions per place. [2024-01-27 15:37:58,215 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 90 selfloop transitions, 3 changer transitions 25/122 dead transitions. [2024-01-27 15:37:58,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 122 transitions, 823 flow [2024-01-27 15:37:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:37:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:37:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-27 15:37:58,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-01-27 15:37:58,217 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 419 flow. Second operand 4 states and 115 transitions. [2024-01-27 15:37:58,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 122 transitions, 823 flow [2024-01-27 15:37:58,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 821 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:58,243 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 414 flow [2024-01-27 15:37:58,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-01-27 15:37:58,244 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-01-27 15:37:58,244 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 414 flow [2024-01-27 15:37:58,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:37:58,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:58,244 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:37:58,250 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 (14)] Ended with exit code 0 [2024-01-27 15:37:58,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 15:37:58,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:37:58,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash 34457481, now seen corresponding path program 2 times [2024-01-27 15:37:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:37:58,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604025159] [2024-01-27 15:37:58,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:37:58,451 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 15:37:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:37:58,452 INFO L229 MonitoredProcess]: Starting monitored process 15 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 15:37:58,454 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 (15)] Waiting until timeout for monitored process [2024-01-27 15:37:58,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:37:58,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:37:58,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:37:58,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:37:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:37:58,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:37:58,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:37:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604025159] [2024-01-27 15:37:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604025159] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:58,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:58,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:37:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12832580] [2024-01-27 15:37:58,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:37:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:37:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:37:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:37:58,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:37:58,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:37:58,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:58,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:37:58,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:00,644 INFO L124 PetriNetUnfolderBase]: 6668/10265 cut-off events. [2024-01-27 15:38:00,644 INFO L125 PetriNetUnfolderBase]: For 18452/18452 co-relation queries the response was YES. [2024-01-27 15:38:00,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28482 conditions, 10265 events. 6668/10265 cut-off events. For 18452/18452 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 65281 event pairs, 1831 based on Foata normal form. 3/10228 useless extension candidates. Maximal degree in co-relation 28425. Up to 6470 conditions per place. [2024-01-27 15:38:00,691 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 92 selfloop transitions, 2 changer transitions 26/124 dead transitions. [2024-01-27 15:38:00,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 124 transitions, 892 flow [2024-01-27 15:38:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-27 15:38:00,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-01-27 15:38:00,693 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 414 flow. Second operand 4 states and 115 transitions. [2024-01-27 15:38:00,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 124 transitions, 892 flow [2024-01-27 15:38:00,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 873 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:38:00,718 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 404 flow [2024-01-27 15:38:00,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-01-27 15:38:00,719 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-01-27 15:38:00,719 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 404 flow [2024-01-27 15:38:00,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:38:00,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:00,720 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:00,726 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 (15)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:00,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 15:38:00,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:00,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1267332492, now seen corresponding path program 1 times [2024-01-27 15:38:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:00,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736076845] [2024-01-27 15:38:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:38:00,925 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 15:38:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:00,926 INFO L229 MonitoredProcess]: Starting monitored process 16 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 15:38:00,926 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 (16)] Waiting until timeout for monitored process [2024-01-27 15:38:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:38:01,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:38:01,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:03,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:03,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736076845] [2024-01-27 15:38:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736076845] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:38:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225835070] [2024-01-27 15:38:03,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:03,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:38:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:38:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:38:03,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:03,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 404 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:03,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:03,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:07,098 INFO L124 PetriNetUnfolderBase]: 5664/8519 cut-off events. [2024-01-27 15:38:07,099 INFO L125 PetriNetUnfolderBase]: For 13813/13813 co-relation queries the response was YES. [2024-01-27 15:38:07,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23847 conditions, 8519 events. 5664/8519 cut-off events. For 13813/13813 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 51060 event pairs, 3441 based on Foata normal form. 1/8504 useless extension candidates. Maximal degree in co-relation 23791. Up to 5744 conditions per place. [2024-01-27 15:38:07,134 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 102 selfloop transitions, 4 changer transitions 15/125 dead transitions. [2024-01-27 15:38:07,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 812 flow [2024-01-27 15:38:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-01-27 15:38:07,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-01-27 15:38:07,137 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 404 flow. Second operand 5 states and 127 transitions. [2024-01-27 15:38:07,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 812 flow [2024-01-27 15:38:07,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 796 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-27 15:38:07,155 INFO L231 Difference]: Finished difference. Result has 92 places, 72 transitions, 407 flow [2024-01-27 15:38:07,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2024-01-27 15:38:07,156 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2024-01-27 15:38:07,156 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 407 flow [2024-01-27 15:38:07,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:07,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:07,156 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:07,162 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 (16)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:07,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 15:38:07,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:07,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 977046592, now seen corresponding path program 2 times [2024-01-27 15:38:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:07,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422872414] [2024-01-27 15:38:07,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:38:07,363 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 15:38:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:07,364 INFO L229 MonitoredProcess]: Starting monitored process 17 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 15:38:07,365 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 (17)] Waiting until timeout for monitored process [2024-01-27 15:38:07,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:38:07,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:07,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:38:07,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:07,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:07,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422872414] [2024-01-27 15:38:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422872414] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:07,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:07,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:38:07,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322004718] [2024-01-27 15:38:07,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:07,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:38:07,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:07,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:38:07,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:38:07,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:07,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 407 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:07,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:07,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:09,913 INFO L124 PetriNetUnfolderBase]: 6222/9615 cut-off events. [2024-01-27 15:38:09,914 INFO L125 PetriNetUnfolderBase]: For 16164/16164 co-relation queries the response was YES. [2024-01-27 15:38:09,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26448 conditions, 9615 events. 6222/9615 cut-off events. For 16164/16164 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 61000 event pairs, 2255 based on Foata normal form. 31/9606 useless extension candidates. Maximal degree in co-relation 26383. Up to 5486 conditions per place. [2024-01-27 15:38:09,957 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 110 selfloop transitions, 4 changer transitions 18/136 dead transitions. [2024-01-27 15:38:09,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 136 transitions, 919 flow [2024-01-27 15:38:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-27 15:38:09,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-27 15:38:09,961 INFO L175 Difference]: Start difference. First operand has 92 places, 72 transitions, 407 flow. Second operand 5 states and 135 transitions. [2024-01-27 15:38:09,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 136 transitions, 919 flow [2024-01-27 15:38:09,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 900 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 15:38:09,980 INFO L231 Difference]: Finished difference. Result has 95 places, 74 transitions, 442 flow [2024-01-27 15:38:09,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=442, PETRI_PLACES=95, PETRI_TRANSITIONS=74} [2024-01-27 15:38:09,981 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-01-27 15:38:09,981 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 74 transitions, 442 flow [2024-01-27 15:38:09,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:09,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:09,981 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:10,000 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 (17)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 15:38:10,185 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:10,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash -419121760, now seen corresponding path program 1 times [2024-01-27 15:38:10,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:10,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618009172] [2024-01-27 15:38:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:38:10,187 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 15:38:10,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:10,188 INFO L229 MonitoredProcess]: Starting monitored process 18 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 15:38:10,222 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 (18)] Waiting until timeout for monitored process [2024-01-27 15:38:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:38:10,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:38:10,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:10,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:10,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618009172] [2024-01-27 15:38:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618009172] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:10,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686574482] [2024-01-27 15:38:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:10,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:10,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 74 transitions, 442 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:38:10,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:10,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:10,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:12,317 INFO L124 PetriNetUnfolderBase]: 6454/9880 cut-off events. [2024-01-27 15:38:12,317 INFO L125 PetriNetUnfolderBase]: For 18578/18578 co-relation queries the response was YES. [2024-01-27 15:38:12,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27724 conditions, 9880 events. 6454/9880 cut-off events. For 18578/18578 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 62139 event pairs, 4677 based on Foata normal form. 2/9834 useless extension candidates. Maximal degree in co-relation 27657. Up to 7864 conditions per place. [2024-01-27 15:38:12,372 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 79 selfloop transitions, 2 changer transitions 25/110 dead transitions. [2024-01-27 15:38:12,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 110 transitions, 772 flow [2024-01-27 15:38:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-01-27 15:38:12,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:38:12,373 INFO L175 Difference]: Start difference. First operand has 95 places, 74 transitions, 442 flow. Second operand 4 states and 104 transitions. [2024-01-27 15:38:12,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 110 transitions, 772 flow [2024-01-27 15:38:12,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 764 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:38:12,402 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 414 flow [2024-01-27 15:38:12,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2024-01-27 15:38:12,403 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-01-27 15:38:12,403 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 414 flow [2024-01-27 15:38:12,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:38:12,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:12,404 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:12,410 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 (18)] Ended with exit code 0 [2024-01-27 15:38:12,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 15:38:12,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:12,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash 446167458, now seen corresponding path program 3 times [2024-01-27 15:38:12,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:12,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515930359] [2024-01-27 15:38:12,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:38:12,610 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 15:38:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:12,611 INFO L229 MonitoredProcess]: Starting monitored process 19 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 15:38:12,612 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 (19)] Waiting until timeout for monitored process [2024-01-27 15:38:12,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:38:12,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:12,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:38:12,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:13,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:13,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515930359] [2024-01-27 15:38:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515930359] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:13,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:38:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872729747] [2024-01-27 15:38:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:13,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:38:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:38:13,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:38:13,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:13,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:13,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:13,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:13,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:15,789 INFO L124 PetriNetUnfolderBase]: 5960/9062 cut-off events. [2024-01-27 15:38:15,789 INFO L125 PetriNetUnfolderBase]: For 17716/17716 co-relation queries the response was YES. [2024-01-27 15:38:15,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25607 conditions, 9062 events. 5960/9062 cut-off events. For 17716/17716 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 55871 event pairs, 3389 based on Foata normal form. 31/9061 useless extension candidates. Maximal degree in co-relation 25543. Up to 5732 conditions per place. [2024-01-27 15:38:15,834 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 101 selfloop transitions, 6 changer transitions 18/129 dead transitions. [2024-01-27 15:38:15,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 870 flow [2024-01-27 15:38:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-01-27 15:38:15,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2024-01-27 15:38:15,836 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 414 flow. Second operand 5 states and 133 transitions. [2024-01-27 15:38:15,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 870 flow [2024-01-27 15:38:15,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 850 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-01-27 15:38:15,867 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 424 flow [2024-01-27 15:38:15,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2024-01-27 15:38:15,868 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-01-27 15:38:15,868 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 424 flow [2024-01-27 15:38:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:15,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:15,868 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:15,874 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 (19)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:16,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 15:38:16,072 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:16,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 391324480, now seen corresponding path program 4 times [2024-01-27 15:38:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359179634] [2024-01-27 15:38:16,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:38:16,073 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 15:38:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:16,075 INFO L229 MonitoredProcess]: Starting monitored process 20 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 15:38:16,078 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 (20)] Waiting until timeout for monitored process [2024-01-27 15:38:16,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:38:16,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:16,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:38:16,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:16,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:16,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359179634] [2024-01-27 15:38:16,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359179634] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:16,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:16,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:38:16,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881651729] [2024-01-27 15:38:16,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:38:16,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:16,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:38:16,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:38:16,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:16,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:16,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:16,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:16,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:18,606 INFO L124 PetriNetUnfolderBase]: 6340/9791 cut-off events. [2024-01-27 15:38:18,606 INFO L125 PetriNetUnfolderBase]: For 19921/19921 co-relation queries the response was YES. [2024-01-27 15:38:18,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27031 conditions, 9791 events. 6340/9791 cut-off events. For 19921/19921 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 62508 event pairs, 2347 based on Foata normal form. 29/9780 useless extension candidates. Maximal degree in co-relation 26963. Up to 6184 conditions per place. [2024-01-27 15:38:18,654 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 106 selfloop transitions, 4 changer transitions 15/129 dead transitions. [2024-01-27 15:38:18,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 874 flow [2024-01-27 15:38:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-01-27 15:38:18,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2024-01-27 15:38:18,655 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 424 flow. Second operand 5 states and 133 transitions. [2024-01-27 15:38:18,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 874 flow [2024-01-27 15:38:18,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 129 transitions, 851 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-27 15:38:18,682 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 441 flow [2024-01-27 15:38:18,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-01-27 15:38:18,683 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-01-27 15:38:18,683 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 441 flow [2024-01-27 15:38:18,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:18,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:18,683 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:18,693 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 (20)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 15:38:18,891 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:18,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2051108628, now seen corresponding path program 5 times [2024-01-27 15:38:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:18,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407757041] [2024-01-27 15:38:18,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:38:18,892 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 15:38:18,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:18,893 INFO L229 MonitoredProcess]: Starting monitored process 21 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 15:38:18,895 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 (21)] Waiting until timeout for monitored process [2024-01-27 15:38:19,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-27 15:38:19,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:19,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:38:19,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:19,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:19,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:19,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407757041] [2024-01-27 15:38:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407757041] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:19,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:19,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:38:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686417716] [2024-01-27 15:38:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:19,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:38:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:38:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:38:19,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:19,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:19,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:19,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:19,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:21,812 INFO L124 PetriNetUnfolderBase]: 6202/9520 cut-off events. [2024-01-27 15:38:21,813 INFO L125 PetriNetUnfolderBase]: For 20017/20017 co-relation queries the response was YES. [2024-01-27 15:38:21,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26636 conditions, 9520 events. 6202/9520 cut-off events. For 20017/20017 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 59821 event pairs, 4157 based on Foata normal form. 29/9453 useless extension candidates. Maximal degree in co-relation 26573. Up to 7182 conditions per place. [2024-01-27 15:38:21,860 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 103 selfloop transitions, 4 changer transitions 16/127 dead transitions. [2024-01-27 15:38:21,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 884 flow [2024-01-27 15:38:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-01-27 15:38:21,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2024-01-27 15:38:21,862 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 441 flow. Second operand 5 states and 128 transitions. [2024-01-27 15:38:21,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 884 flow [2024-01-27 15:38:21,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 127 transitions, 870 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 15:38:21,894 INFO L231 Difference]: Finished difference. Result has 100 places, 72 transitions, 465 flow [2024-01-27 15:38:21,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=100, PETRI_TRANSITIONS=72} [2024-01-27 15:38:21,895 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-01-27 15:38:21,895 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 72 transitions, 465 flow [2024-01-27 15:38:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:21,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:21,896 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:21,915 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 (21)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 15:38:22,103 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:22,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1888476212, now seen corresponding path program 2 times [2024-01-27 15:38:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475550396] [2024-01-27 15:38:22,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:38:22,104 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 15:38:22,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:22,120 INFO L229 MonitoredProcess]: Starting monitored process 22 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 15:38:22,150 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 (22)] Waiting until timeout for monitored process [2024-01-27 15:38:22,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:38:22,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:22,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:38:22,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:22,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:22,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475550396] [2024-01-27 15:38:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475550396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:22,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:22,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:22,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525285918] [2024-01-27 15:38:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:22,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:22,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:22,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 72 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:38:22,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:22,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:22,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:24,147 INFO L124 PetriNetUnfolderBase]: 6004/9247 cut-off events. [2024-01-27 15:38:24,148 INFO L125 PetriNetUnfolderBase]: For 20630/20630 co-relation queries the response was YES. [2024-01-27 15:38:24,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26128 conditions, 9247 events. 6004/9247 cut-off events. For 20630/20630 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 57559 event pairs, 2651 based on Foata normal form. 2/9201 useless extension candidates. Maximal degree in co-relation 26071. Up to 7350 conditions per place. [2024-01-27 15:38:24,185 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 79 selfloop transitions, 5 changer transitions 26/114 dead transitions. [2024-01-27 15:38:24,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 114 transitions, 892 flow [2024-01-27 15:38:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-01-27 15:38:24,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-01-27 15:38:24,186 INFO L175 Difference]: Start difference. First operand has 100 places, 72 transitions, 465 flow. Second operand 4 states and 107 transitions. [2024-01-27 15:38:24,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 114 transitions, 892 flow [2024-01-27 15:38:24,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 114 transitions, 884 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 15:38:24,213 INFO L231 Difference]: Finished difference. Result has 101 places, 72 transitions, 478 flow [2024-01-27 15:38:24,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=101, PETRI_TRANSITIONS=72} [2024-01-27 15:38:24,213 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-01-27 15:38:24,213 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 72 transitions, 478 flow [2024-01-27 15:38:24,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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 15:38:24,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:24,214 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:24,217 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 (22)] Ended with exit code 0 [2024-01-27 15:38:24,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 15:38:24,417 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:24,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:24,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1698029808, now seen corresponding path program 6 times [2024-01-27 15:38:24,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:24,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132980954] [2024-01-27 15:38:24,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:38:24,418 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 15:38:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:24,419 INFO L229 MonitoredProcess]: Starting monitored process 23 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 15:38:24,421 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 (23)] Waiting until timeout for monitored process [2024-01-27 15:38:24,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:38:24,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:24,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:38:24,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:38:26,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:26,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132980954] [2024-01-27 15:38:26,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132980954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:26,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:26,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:38:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669879709] [2024-01-27 15:38:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:26,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:38:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:26,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:38:26,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:38:26,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:26,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 72 transitions, 478 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:26,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:26,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:26,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:29,311 INFO L124 PetriNetUnfolderBase]: 5298/8043 cut-off events. [2024-01-27 15:38:29,311 INFO L125 PetriNetUnfolderBase]: For 18012/18012 co-relation queries the response was YES. [2024-01-27 15:38:29,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23079 conditions, 8043 events. 5298/8043 cut-off events. For 18012/18012 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 48211 event pairs, 3557 based on Foata normal form. 1/7988 useless extension candidates. Maximal degree in co-relation 23027. Up to 6040 conditions per place. [2024-01-27 15:38:29,347 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 85 selfloop transitions, 2 changer transitions 19/110 dead transitions. [2024-01-27 15:38:29,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 110 transitions, 799 flow [2024-01-27 15:38:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-01-27 15:38:29,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44313725490196076 [2024-01-27 15:38:29,350 INFO L175 Difference]: Start difference. First operand has 101 places, 72 transitions, 478 flow. Second operand 5 states and 113 transitions. [2024-01-27 15:38:29,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 110 transitions, 799 flow [2024-01-27 15:38:29,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 110 transitions, 763 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-01-27 15:38:29,368 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 419 flow [2024-01-27 15:38:29,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-01-27 15:38:29,369 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-01-27 15:38:29,369 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 419 flow [2024-01-27 15:38:29,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 15:38:29,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:29,369 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:29,373 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 (23)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:29,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 15:38:29,573 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:29,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash -935093484, now seen corresponding path program 1 times [2024-01-27 15:38:29,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:29,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25086481] [2024-01-27 15:38:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:38:29,574 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 15:38:29,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:29,575 INFO L229 MonitoredProcess]: Starting monitored process 24 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 15:38:29,576 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 (24)] Waiting until timeout for monitored process [2024-01-27 15:38:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:38:29,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:38:29,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:38:30,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:30,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25086481] [2024-01-27 15:38:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25086481] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395802179] [2024-01-27 15:38:30,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:30,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:30,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:30,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:30,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:30,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:30,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:31,722 INFO L124 PetriNetUnfolderBase]: 5680/8791 cut-off events. [2024-01-27 15:38:31,723 INFO L125 PetriNetUnfolderBase]: For 16537/16537 co-relation queries the response was YES. [2024-01-27 15:38:31,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23988 conditions, 8791 events. 5680/8791 cut-off events. For 16537/16537 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 54768 event pairs, 987 based on Foata normal form. 170/8953 useless extension candidates. Maximal degree in co-relation 23947. Up to 4450 conditions per place. [2024-01-27 15:38:31,753 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 109 selfloop transitions, 10 changer transitions 1/124 dead transitions. [2024-01-27 15:38:31,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 843 flow [2024-01-27 15:38:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-01-27 15:38:31,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:38:31,755 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 419 flow. Second operand 5 states and 130 transitions. [2024-01-27 15:38:31,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 843 flow [2024-01-27 15:38:31,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 834 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 15:38:31,769 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 482 flow [2024-01-27 15:38:31,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-01-27 15:38:31,769 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-01-27 15:38:31,769 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 482 flow [2024-01-27 15:38:31,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:31,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:31,770 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:31,777 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 (24)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:31,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 15:38:31,976 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:31,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:31,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1177847707, now seen corresponding path program 1 times [2024-01-27 15:38:31,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:31,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665350178] [2024-01-27 15:38:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:38:31,977 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 15:38:31,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:31,978 INFO L229 MonitoredProcess]: Starting monitored process 25 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 15:38:31,978 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 (25)] Waiting until timeout for monitored process [2024-01-27 15:38:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:38:32,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:38:32,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:38:32,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:32,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665350178] [2024-01-27 15:38:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665350178] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717891370] [2024-01-27 15:38:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:32,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:32,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:32,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:32,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:32,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:32,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:33,732 INFO L124 PetriNetUnfolderBase]: 5594/8543 cut-off events. [2024-01-27 15:38:33,732 INFO L125 PetriNetUnfolderBase]: For 19034/19034 co-relation queries the response was YES. [2024-01-27 15:38:33,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24413 conditions, 8543 events. 5594/8543 cut-off events. For 19034/19034 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 52693 event pairs, 4069 based on Foata normal form. 24/8551 useless extension candidates. Maximal degree in co-relation 24305. Up to 7212 conditions per place. [2024-01-27 15:38:33,776 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 87 selfloop transitions, 1 changer transitions 12/104 dead transitions. [2024-01-27 15:38:33,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 774 flow [2024-01-27 15:38:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-01-27 15:38:33,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2024-01-27 15:38:33,778 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 482 flow. Second operand 4 states and 97 transitions. [2024-01-27 15:38:33,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 774 flow [2024-01-27 15:38:33,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 749 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-01-27 15:38:33,804 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 465 flow [2024-01-27 15:38:33,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=465, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-01-27 15:38:33,804 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-01-27 15:38:33,804 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 465 flow [2024-01-27 15:38:33,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:33,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:33,805 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:33,810 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 (25)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:34,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 15:38:34,010 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:34,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash -910211259, now seen corresponding path program 2 times [2024-01-27 15:38:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575434240] [2024-01-27 15:38:34,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:38:34,011 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 15:38:34,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:34,012 INFO L229 MonitoredProcess]: Starting monitored process 26 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 15:38:34,014 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 (26)] Waiting until timeout for monitored process [2024-01-27 15:38:34,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:38:34,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:34,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:38:34,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:38:34,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:34,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:34,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575434240] [2024-01-27 15:38:34,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575434240] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:34,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:34,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:34,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836266039] [2024-01-27 15:38:34,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:34,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:34,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:34,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:34,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:34,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:34,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:34,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:35,744 INFO L124 PetriNetUnfolderBase]: 5154/7900 cut-off events. [2024-01-27 15:38:35,745 INFO L125 PetriNetUnfolderBase]: For 14512/14512 co-relation queries the response was YES. [2024-01-27 15:38:35,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22081 conditions, 7900 events. 5154/7900 cut-off events. For 14512/14512 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 48185 event pairs, 2161 based on Foata normal form. 24/7908 useless extension candidates. Maximal degree in co-relation 22054. Up to 3738 conditions per place. [2024-01-27 15:38:35,787 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 84 selfloop transitions, 3 changer transitions 10/101 dead transitions. [2024-01-27 15:38:35,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 730 flow [2024-01-27 15:38:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-01-27 15:38:35,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-01-27 15:38:35,789 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 465 flow. Second operand 4 states and 96 transitions. [2024-01-27 15:38:35,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 730 flow [2024-01-27 15:38:35,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:38:35,805 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 435 flow [2024-01-27 15:38:35,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2024-01-27 15:38:35,805 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-01-27 15:38:35,805 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 435 flow [2024-01-27 15:38:35,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:35,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:35,806 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:35,817 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 (26)] Ended with exit code 0 [2024-01-27 15:38:36,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 15:38:36,010 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:36,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2101793370, now seen corresponding path program 2 times [2024-01-27 15:38:36,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:36,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553563469] [2024-01-27 15:38:36,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:38:36,011 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 15:38:36,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:36,012 INFO L229 MonitoredProcess]: Starting monitored process 27 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 15:38:36,016 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 (27)] Waiting until timeout for monitored process [2024-01-27 15:38:36,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:38:36,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:36,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:38:36,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:38:36,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:36,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553563469] [2024-01-27 15:38:36,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553563469] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:36,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:36,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:36,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784306441] [2024-01-27 15:38:36,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:36,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:36,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:36,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:36,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:36,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:36,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:36,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:37,934 INFO L124 PetriNetUnfolderBase]: 5018/7821 cut-off events. [2024-01-27 15:38:37,935 INFO L125 PetriNetUnfolderBase]: For 13752/13752 co-relation queries the response was YES. [2024-01-27 15:38:37,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21312 conditions, 7821 events. 5018/7821 cut-off events. For 13752/13752 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 48255 event pairs, 323 based on Foata normal form. 86/7899 useless extension candidates. Maximal degree in co-relation 21285. Up to 4940 conditions per place. [2024-01-27 15:38:37,970 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 108 selfloop transitions, 11 changer transitions 1/124 dead transitions. [2024-01-27 15:38:37,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 124 transitions, 852 flow [2024-01-27 15:38:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:38:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:38:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-01-27 15:38:37,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2024-01-27 15:38:37,971 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 435 flow. Second operand 5 states and 126 transitions. [2024-01-27 15:38:37,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 124 transitions, 852 flow [2024-01-27 15:38:37,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 826 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-27 15:38:37,983 INFO L231 Difference]: Finished difference. Result has 88 places, 73 transitions, 465 flow [2024-01-27 15:38:37,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2024-01-27 15:38:37,984 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-01-27 15:38:37,984 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 465 flow [2024-01-27 15:38:37,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:37,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:37,984 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:37,988 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 (27)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:38,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 15:38:38,189 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:38,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1887620404, now seen corresponding path program 3 times [2024-01-27 15:38:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:38,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411486449] [2024-01-27 15:38:38,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:38:38,191 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 15:38:38,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:38,191 INFO L229 MonitoredProcess]: Starting monitored process 28 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 15:38:38,193 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 (28)] Waiting until timeout for monitored process [2024-01-27 15:38:38,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:38:38,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:38,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:38:38,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:38:38,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:38,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:38,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411486449] [2024-01-27 15:38:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411486449] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:38,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:38,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:38,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170282171] [2024-01-27 15:38:38,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:38,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:38,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:38,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:38,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:38,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:38,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:40,039 INFO L124 PetriNetUnfolderBase]: 4982/7605 cut-off events. [2024-01-27 15:38:40,039 INFO L125 PetriNetUnfolderBase]: For 12294/12294 co-relation queries the response was YES. [2024-01-27 15:38:40,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21546 conditions, 7605 events. 4982/7605 cut-off events. For 12294/12294 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 45611 event pairs, 3489 based on Foata normal form. 24/7613 useless extension candidates. Maximal degree in co-relation 21523. Up to 6322 conditions per place. [2024-01-27 15:38:40,069 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 87 selfloop transitions, 1 changer transitions 10/102 dead transitions. [2024-01-27 15:38:40,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 102 transitions, 750 flow [2024-01-27 15:38:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-01-27 15:38:40,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-01-27 15:38:40,071 INFO L175 Difference]: Start difference. First operand has 88 places, 73 transitions, 465 flow. Second operand 4 states and 94 transitions. [2024-01-27 15:38:40,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 102 transitions, 750 flow [2024-01-27 15:38:40,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 102 transitions, 728 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-27 15:38:40,085 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 452 flow [2024-01-27 15:38:40,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=452, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-01-27 15:38:40,086 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-01-27 15:38:40,086 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 452 flow [2024-01-27 15:38:40,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:40,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:40,087 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2024-01-27 15:38:40,097 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 (28)] Forceful destruction successful, exit code 0 [2024-01-27 15:38:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 15:38:40,291 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:40,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash -363949700, now seen corresponding path program 4 times [2024-01-27 15:38:40,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:40,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901945716] [2024-01-27 15:38:40,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:38:40,292 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 15:38:40,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:40,293 INFO L229 MonitoredProcess]: Starting monitored process 29 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 15:38:40,296 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 (29)] Waiting until timeout for monitored process [2024-01-27 15:38:40,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:38:40,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:38:40,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:38:40,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:38:40,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:38:40,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 15:38:40,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901945716] [2024-01-27 15:38:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901945716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:38:40,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:38:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:38:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99273147] [2024-01-27 15:38:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:38:40,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:38:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 15:38:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:38:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:38:40,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:38:40,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:40,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:38:40,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:38:40,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:38:42,112 INFO L124 PetriNetUnfolderBase]: 4552/6972 cut-off events. [2024-01-27 15:38:42,113 INFO L125 PetriNetUnfolderBase]: For 8882/8882 co-relation queries the response was YES. [2024-01-27 15:38:42,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19508 conditions, 6972 events. 4552/6972 cut-off events. For 8882/8882 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 41232 event pairs, 1599 based on Foata normal form. 24/6988 useless extension candidates. Maximal degree in co-relation 19484. Up to 4846 conditions per place. [2024-01-27 15:38:42,166 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 79 selfloop transitions, 5 changer transitions 10/98 dead transitions. [2024-01-27 15:38:42,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 703 flow [2024-01-27 15:38:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:38:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:38:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-01-27 15:38:42,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-01-27 15:38:42,167 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 452 flow. Second operand 4 states and 92 transitions. [2024-01-27 15:38:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 703 flow [2024-01-27 15:38:42,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 701 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:38:42,176 INFO L231 Difference]: Finished difference. Result has 90 places, 71 transitions, 431 flow [2024-01-27 15:38:42,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=431, PETRI_PLACES=90, PETRI_TRANSITIONS=71} [2024-01-27 15:38:42,176 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-01-27 15:38:42,177 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 71 transitions, 431 flow [2024-01-27 15:38:42,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 15:38:42,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:38:42,177 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:38:42,182 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 (29)] Ended with exit code 0 [2024-01-27 15:38:42,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 15:38:42,381 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:38:42,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:38:42,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2006875413, now seen corresponding path program 1 times [2024-01-27 15:38:42,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 15:38:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302597207] [2024-01-27 15:38:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:38:42,382 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 15:38:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 15:38:42,383 INFO L229 MonitoredProcess]: Starting monitored process 30 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 15:38:42,384 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 (30)] Waiting until timeout for monitored process [2024-01-27 15:38:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:38:42,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 58 conjunts are in the unsatisfiable core [2024-01-27 15:38:42,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:38:48,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:38:48,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 371 treesize of output 403 [2024-01-27 15:38:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:38:50,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:39:12,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:39:12,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 304 treesize of output 602 Killed by 15