./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.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/popl20-counter-determinism.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 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:37:18,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:37:18,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:37:18,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:37:18,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:37:18,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:37:18,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:37:18,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:37:18,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:37:18,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:37:18,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:37:18,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:37:18,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:37:18,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:37:18,150 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:37:18,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:37:18,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:37:18,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:37:18,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:37:18,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:37:18,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:37:18,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:37:18,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:37:18,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:37:18,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:37:18,154 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:37:18,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:37:18,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:37:18,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:37:18,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:37:18,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:37:18,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:37:18,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:37:18,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:37:18,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:37:18,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:37:18,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:37:18,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:37:18,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:37:18,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:37:18,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:37:18,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:37:18,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:37:18,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 [2024-01-27 15:37:18,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:37:18,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:37:18,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:37:18,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:37:18,394 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:37:18,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2024-01-27 15:37:19,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:37:19,587 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:37:19,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2024-01-27 15:37:19,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca80bd15e/166aef888279464989a60b0055b0c3a3/FLAG8104209d2 [2024-01-27 15:37:19,617 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca80bd15e/166aef888279464989a60b0055b0c3a3 [2024-01-27 15:37:19,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:37:19,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:37:19,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:37:19,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:37:19,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:37:19,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264ccbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19, skipping insertion in model container [2024-01-27 15:37:19,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,645 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:37:19,798 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/popl20-counter-determinism.wvr.c[2528,2541] [2024-01-27 15:37:19,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:37:19,814 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:37:19,842 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/popl20-counter-determinism.wvr.c[2528,2541] [2024-01-27 15:37:19,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:37:19,859 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:37:19,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19 WrapperNode [2024-01-27 15:37:19,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:37:19,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:37:19,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:37:19,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:37:19,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,896 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2024-01-27 15:37:19,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:37:19,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:37:19,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:37:19,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:37:19,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,920 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:37:19,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:37:19,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:37:19,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:37:19,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:37:19,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (1/1) ... [2024-01-27 15:37:19,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:37:19,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:37:19,977 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 15:37:19,979 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 15:37:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:37:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:37:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:37:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:37:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:37:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:37:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:37:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:37:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:37:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:37:20,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:37:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:37:20,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:37:20,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:37:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:37:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:37:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:37:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:37:20,029 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 15:37:20,108 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:37:20,109 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:37:20,255 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:37:20,255 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:37:20,364 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:37:20,365 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:37:20,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:37:20 BoogieIcfgContainer [2024-01-27 15:37:20,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:37:20,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:37:20,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:37:20,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:37:20,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:37:19" (1/3) ... [2024-01-27 15:37:20,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7457d8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:37:20, skipping insertion in model container [2024-01-27 15:37:20,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:37:19" (2/3) ... [2024-01-27 15:37:20,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7457d8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:37:20, skipping insertion in model container [2024-01-27 15:37:20,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:37:20" (3/3) ... [2024-01-27 15:37:20,371 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-01-27 15:37:20,376 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:37:20,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:37:20,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:37:20,383 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:37:20,429 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:37:20,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 43 transitions, 114 flow [2024-01-27 15:37:20,497 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2024-01-27 15:37:20,497 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:37:20,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 39 events. 4/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-27 15:37:20,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 43 transitions, 114 flow [2024-01-27 15:37:20,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 100 flow [2024-01-27 15:37:20,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:37:20,528 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;@7a9be672, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:37:20,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:37:20,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:37:20,547 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2024-01-27 15:37:20,547 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:37:20,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:20,548 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 15:37:20,549 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 2 more)] === [2024-01-27 15:37:20,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1610158265, now seen corresponding path program 1 times [2024-01-27 15:37:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705944180] [2024-01-27 15:37:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:20,902 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 15:37:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705944180] [2024-01-27 15:37:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705944180] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:37:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472143065] [2024-01-27 15:37:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:20,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:37:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:37:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:37:20,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-01-27 15:37:20,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:20,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:20,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-01-27 15:37:20,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:21,405 INFO L124 PetriNetUnfolderBase]: 3661/5016 cut-off events. [2024-01-27 15:37:21,406 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-01-27 15:37:21,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 5016 events. 3661/5016 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 21808 event pairs, 656 based on Foata normal form. 1/5004 useless extension candidates. Maximal degree in co-relation 8256. Up to 3880 conditions per place. [2024-01-27 15:37:21,466 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 53 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2024-01-27 15:37:21,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 291 flow [2024-01-27 15:37:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:37:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:37:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-01-27 15:37:21,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-01-27 15:37:21,477 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 100 flow. Second operand 3 states and 87 transitions. [2024-01-27 15:37:21,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 291 flow [2024-01-27 15:37:21,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:37:21,488 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 117 flow [2024-01-27 15:37:21,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-01-27 15:37:21,493 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2024-01-27 15:37:21,494 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 117 flow [2024-01-27 15:37:21,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:21,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:21,494 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 15:37:21,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:37:21,495 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 2 more)] === [2024-01-27 15:37:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -240374807, now seen corresponding path program 1 times [2024-01-27 15:37:21,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:21,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209761651] [2024-01-27 15:37:21,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:21,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:21,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209761651] [2024-01-27 15:37:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209761651] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:21,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024707625] [2024-01-27 15:37:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:21,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:21,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:21,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:21,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:21,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:21,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:21,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:22,338 INFO L124 PetriNetUnfolderBase]: 7926/10760 cut-off events. [2024-01-27 15:37:22,339 INFO L125 PetriNetUnfolderBase]: For 1792/1812 co-relation queries the response was YES. [2024-01-27 15:37:22,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24229 conditions, 10760 events. 7926/10760 cut-off events. For 1792/1812 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 55189 event pairs, 2430 based on Foata normal form. 0/10212 useless extension candidates. Maximal degree in co-relation 3833. Up to 5601 conditions per place. [2024-01-27 15:37:22,388 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 97 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-01-27 15:37:22,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 111 transitions, 528 flow [2024-01-27 15:37:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-01-27 15:37:22,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2024-01-27 15:37:22,393 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 117 flow. Second operand 5 states and 134 transitions. [2024-01-27 15:37:22,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 111 transitions, 528 flow [2024-01-27 15:37:22,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 111 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:22,399 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 175 flow [2024-01-27 15:37:22,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2024-01-27 15:37:22,400 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-01-27 15:37:22,400 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 175 flow [2024-01-27 15:37:22,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:22,401 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 15:37:22,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:37:22,405 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 2 more)] === [2024-01-27 15:37:22,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1726688973, now seen corresponding path program 2 times [2024-01-27 15:37:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:22,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014576104] [2024-01-27 15:37:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014576104] [2024-01-27 15:37:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014576104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:37:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142689782] [2024-01-27 15:37:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:37:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:37:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:37:22,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:22,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:22,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:22,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:22,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:23,412 INFO L124 PetriNetUnfolderBase]: 10697/14516 cut-off events. [2024-01-27 15:37:23,412 INFO L125 PetriNetUnfolderBase]: For 6187/6187 co-relation queries the response was YES. [2024-01-27 15:37:23,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37748 conditions, 14516 events. 10697/14516 cut-off events. For 6187/6187 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 78085 event pairs, 1327 based on Foata normal form. 304/14806 useless extension candidates. Maximal degree in co-relation 18251. Up to 3850 conditions per place. [2024-01-27 15:37:23,532 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 150 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-01-27 15:37:23,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 167 transitions, 852 flow [2024-01-27 15:37:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:37:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:37:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-01-27 15:37:23,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611295681063123 [2024-01-27 15:37:23,535 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 175 flow. Second operand 7 states and 199 transitions. [2024-01-27 15:37:23,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 167 transitions, 852 flow [2024-01-27 15:37:23,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 167 transitions, 852 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:37:23,541 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 266 flow [2024-01-27 15:37:23,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-01-27 15:37:23,542 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-01-27 15:37:23,542 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 266 flow [2024-01-27 15:37:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:23,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:23,543 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 15:37:23,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:37:23,543 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 2 more)] === [2024-01-27 15:37:23,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1564583214, now seen corresponding path program 1 times [2024-01-27 15:37:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:23,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865738031] [2024-01-27 15:37:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865738031] [2024-01-27 15:37:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865738031] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:23,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:37:23,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161804388] [2024-01-27 15:37:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:37:23,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:37:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:37:23,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-01-27 15:37:23,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:23,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:23,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-01-27 15:37:23,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:24,206 INFO L124 PetriNetUnfolderBase]: 7455/10261 cut-off events. [2024-01-27 15:37:24,207 INFO L125 PetriNetUnfolderBase]: For 13340/13379 co-relation queries the response was YES. [2024-01-27 15:37:24,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30451 conditions, 10261 events. 7455/10261 cut-off events. For 13340/13379 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 52349 event pairs, 2869 based on Foata normal form. 391/10578 useless extension candidates. Maximal degree in co-relation 21278. Up to 6187 conditions per place. [2024-01-27 15:37:24,248 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 74 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-01-27 15:37:24,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 503 flow [2024-01-27 15:37:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:37:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:37:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-01-27 15:37:24,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-01-27 15:37:24,249 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 266 flow. Second operand 3 states and 88 transitions. [2024-01-27 15:37:24,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 503 flow [2024-01-27 15:37:24,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 495 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:24,263 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 271 flow [2024-01-27 15:37:24,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-01-27 15:37:24,264 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2024-01-27 15:37:24,264 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 271 flow [2024-01-27 15:37:24,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:24,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:24,265 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 15:37:24,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:37:24,265 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 2 more)] === [2024-01-27 15:37:24,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash -786471107, now seen corresponding path program 3 times [2024-01-27 15:37:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927312105] [2024-01-27 15:37:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:24,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:24,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927312105] [2024-01-27 15:37:24,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927312105] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:24,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:24,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:24,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410696899] [2024-01-27 15:37:24,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:24,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:24,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:24,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:24,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:24,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:24,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:24,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:24,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:24,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:25,097 INFO L124 PetriNetUnfolderBase]: 11169/15500 cut-off events. [2024-01-27 15:37:25,098 INFO L125 PetriNetUnfolderBase]: For 19278/19278 co-relation queries the response was YES. [2024-01-27 15:37:25,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46474 conditions, 15500 events. 11169/15500 cut-off events. For 19278/19278 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 85535 event pairs, 3669 based on Foata normal form. 62/15527 useless extension candidates. Maximal degree in co-relation 33627. Up to 7914 conditions per place. [2024-01-27 15:37:25,172 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 106 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2024-01-27 15:37:25,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 127 transitions, 795 flow [2024-01-27 15:37:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-01-27 15:37:25,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2024-01-27 15:37:25,174 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 271 flow. Second operand 5 states and 134 transitions. [2024-01-27 15:37:25,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 127 transitions, 795 flow [2024-01-27 15:37:25,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 127 transitions, 786 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:25,351 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 393 flow [2024-01-27 15:37:25,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-01-27 15:37:25,353 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2024-01-27 15:37:25,353 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 393 flow [2024-01-27 15:37:25,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:25,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:25,353 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 15:37:25,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:37:25,354 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 2 more)] === [2024-01-27 15:37:25,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash -797557895, now seen corresponding path program 4 times [2024-01-27 15:37:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465019402] [2024-01-27 15:37:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465019402] [2024-01-27 15:37:25,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465019402] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:25,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:25,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:25,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320726029] [2024-01-27 15:37:25,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:25,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:25,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:25,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:25,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:25,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:25,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:25,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:25,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:25,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:26,471 INFO L124 PetriNetUnfolderBase]: 11489/15990 cut-off events. [2024-01-27 15:37:26,472 INFO L125 PetriNetUnfolderBase]: For 29214/29229 co-relation queries the response was YES. [2024-01-27 15:37:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51422 conditions, 15990 events. 11489/15990 cut-off events. For 29214/29229 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 90315 event pairs, 3143 based on Foata normal form. 62/16027 useless extension candidates. Maximal degree in co-relation 35112. Up to 6190 conditions per place. [2024-01-27 15:37:26,543 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 119 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2024-01-27 15:37:26,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 137 transitions, 904 flow [2024-01-27 15:37:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-01-27 15:37:26,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2024-01-27 15:37:26,544 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 393 flow. Second operand 5 states and 138 transitions. [2024-01-27 15:37:26,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 137 transitions, 904 flow [2024-01-27 15:37:26,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 888 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-01-27 15:37:26,737 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 436 flow [2024-01-27 15:37:26,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-01-27 15:37:26,737 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2024-01-27 15:37:26,738 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 436 flow [2024-01-27 15:37:26,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:26,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:26,738 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 15:37:26,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:37:26,738 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 2 more)] === [2024-01-27 15:37:26,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash -688572187, now seen corresponding path program 1 times [2024-01-27 15:37:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989771972] [2024-01-27 15:37:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:26,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:26,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:26,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989771972] [2024-01-27 15:37:26,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989771972] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:26,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:26,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251266878] [2024-01-27 15:37:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:26,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:26,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:26,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:26,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:26,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:27,825 INFO L124 PetriNetUnfolderBase]: 12534/17602 cut-off events. [2024-01-27 15:37:27,826 INFO L125 PetriNetUnfolderBase]: For 43892/43912 co-relation queries the response was YES. [2024-01-27 15:37:27,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58244 conditions, 17602 events. 12534/17602 cut-off events. For 43892/43912 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 102564 event pairs, 3960 based on Foata normal form. 6/16780 useless extension candidates. Maximal degree in co-relation 40976. Up to 9188 conditions per place. [2024-01-27 15:37:27,901 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 110 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-01-27 15:37:27,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 132 transitions, 899 flow [2024-01-27 15:37:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-01-27 15:37:27,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2024-01-27 15:37:27,902 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 436 flow. Second operand 5 states and 138 transitions. [2024-01-27 15:37:27,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 132 transitions, 899 flow [2024-01-27 15:37:27,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 132 transitions, 868 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:37:27,982 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 465 flow [2024-01-27 15:37:27,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-01-27 15:37:27,983 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2024-01-27 15:37:27,983 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 465 flow [2024-01-27 15:37:27,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:27,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:27,983 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 15:37:27,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:37:27,984 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 2 more)] === [2024-01-27 15:37:27,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:27,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1960486575, now seen corresponding path program 2 times [2024-01-27 15:37:27,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:27,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936030418] [2024-01-27 15:37:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:28,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936030418] [2024-01-27 15:37:28,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936030418] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:28,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:28,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397923851] [2024-01-27 15:37:28,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:28,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:28,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:28,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:28,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:28,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:28,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:29,911 INFO L124 PetriNetUnfolderBase]: 20878/28099 cut-off events. [2024-01-27 15:37:29,911 INFO L125 PetriNetUnfolderBase]: For 74924/75034 co-relation queries the response was YES. [2024-01-27 15:37:29,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95823 conditions, 28099 events. 20878/28099 cut-off events. For 74924/75034 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 158137 event pairs, 7236 based on Foata normal form. 276/26750 useless extension candidates. Maximal degree in co-relation 68172. Up to 16039 conditions per place. [2024-01-27 15:37:30,094 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 200 selfloop transitions, 9 changer transitions 0/214 dead transitions. [2024-01-27 15:37:30,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 214 transitions, 2026 flow [2024-01-27 15:37:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-01-27 15:37:30,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2024-01-27 15:37:30,096 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 465 flow. Second operand 5 states and 134 transitions. [2024-01-27 15:37:30,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 214 transitions, 2026 flow [2024-01-27 15:37:30,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 214 transitions, 1930 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:37:30,176 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 499 flow [2024-01-27 15:37:30,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2024-01-27 15:37:30,177 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2024-01-27 15:37:30,177 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 499 flow [2024-01-27 15:37:30,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:30,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:30,178 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 15:37:30,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:37:30,178 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 2 more)] === [2024-01-27 15:37:30,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:30,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1755741617, now seen corresponding path program 3 times [2024-01-27 15:37:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:30,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108091277] [2024-01-27 15:37:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:30,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108091277] [2024-01-27 15:37:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108091277] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:30,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:30,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:37:30,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453542085] [2024-01-27 15:37:30,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:30,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:37:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:37:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:37:30,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-27 15:37:30,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:30,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:30,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-27 15:37:30,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:32,835 INFO L124 PetriNetUnfolderBase]: 28301/38219 cut-off events. [2024-01-27 15:37:32,835 INFO L125 PetriNetUnfolderBase]: For 106342/106342 co-relation queries the response was YES. [2024-01-27 15:37:32,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146336 conditions, 38219 events. 28301/38219 cut-off events. For 106342/106342 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 222041 event pairs, 9939 based on Foata normal form. 636/37931 useless extension candidates. Maximal degree in co-relation 107696. Up to 23666 conditions per place. [2024-01-27 15:37:33,047 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 147 selfloop transitions, 35 changer transitions 0/185 dead transitions. [2024-01-27 15:37:33,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 185 transitions, 1520 flow [2024-01-27 15:37:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:37:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:37:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-01-27 15:37:33,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930232558139535 [2024-01-27 15:37:33,049 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 499 flow. Second operand 6 states and 153 transitions. [2024-01-27 15:37:33,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 185 transitions, 1520 flow [2024-01-27 15:37:33,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 185 transitions, 1508 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-01-27 15:37:33,359 INFO L231 Difference]: Finished difference. Result has 89 places, 96 transitions, 807 flow [2024-01-27 15:37:33,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=807, PETRI_PLACES=89, PETRI_TRANSITIONS=96} [2024-01-27 15:37:33,360 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2024-01-27 15:37:33,360 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 96 transitions, 807 flow [2024-01-27 15:37:33,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:33,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:33,361 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 15:37:33,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:37:33,361 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 2 more)] === [2024-01-27 15:37:33,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash 892244391, now seen corresponding path program 4 times [2024-01-27 15:37:33,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:33,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233035869] [2024-01-27 15:37:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:33,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:33,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233035869] [2024-01-27 15:37:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233035869] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:33,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489815256] [2024-01-27 15:37:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:33,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:33,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:33,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 96 transitions, 807 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:33,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:33,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:33,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:36,238 INFO L124 PetriNetUnfolderBase]: 25492/34586 cut-off events. [2024-01-27 15:37:36,239 INFO L125 PetriNetUnfolderBase]: For 120940/120996 co-relation queries the response was YES. [2024-01-27 15:37:36,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140778 conditions, 34586 events. 25492/34586 cut-off events. For 120940/120996 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 202562 event pairs, 7780 based on Foata normal form. 90/33823 useless extension candidates. Maximal degree in co-relation 106289. Up to 17713 conditions per place. [2024-01-27 15:37:36,611 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 154 selfloop transitions, 32 changer transitions 0/193 dead transitions. [2024-01-27 15:37:36,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 193 transitions, 1862 flow [2024-01-27 15:37:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-01-27 15:37:36,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-01-27 15:37:36,623 INFO L175 Difference]: Start difference. First operand has 89 places, 96 transitions, 807 flow. Second operand 5 states and 132 transitions. [2024-01-27 15:37:36,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 193 transitions, 1862 flow [2024-01-27 15:37:37,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 193 transitions, 1854 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-27 15:37:37,054 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 1193 flow [2024-01-27 15:37:37,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1193, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-01-27 15:37:37,056 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 49 predicate places. [2024-01-27 15:37:37,056 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 1193 flow [2024-01-27 15:37:37,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:37,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:37,057 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 15:37:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:37:37,057 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 2 more)] === [2024-01-27 15:37:37,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1659313104, now seen corresponding path program 1 times [2024-01-27 15:37:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550067452] [2024-01-27 15:37:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:37,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550067452] [2024-01-27 15:37:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550067452] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:37,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:37:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964308428] [2024-01-27 15:37:37,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:37:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:37:37,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:37:37,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-01-27 15:37:37,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 1193 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:37,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:37,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-01-27 15:37:37,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:38,956 INFO L124 PetriNetUnfolderBase]: 17619/24895 cut-off events. [2024-01-27 15:37:38,956 INFO L125 PetriNetUnfolderBase]: For 112890/114689 co-relation queries the response was YES. [2024-01-27 15:37:39,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105883 conditions, 24895 events. 17619/24895 cut-off events. For 112890/114689 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 150687 event pairs, 4217 based on Foata normal form. 1257/25891 useless extension candidates. Maximal degree in co-relation 78278. Up to 15825 conditions per place. [2024-01-27 15:37:39,139 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 163 selfloop transitions, 3 changer transitions 9/185 dead transitions. [2024-01-27 15:37:39,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 185 transitions, 2305 flow [2024-01-27 15:37:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:37:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:37:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-27 15:37:39,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-01-27 15:37:39,141 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 1193 flow. Second operand 3 states and 84 transitions. [2024-01-27 15:37:39,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 185 transitions, 2305 flow [2024-01-27 15:37:39,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 185 transitions, 2272 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:39,290 INFO L231 Difference]: Finished difference. Result has 98 places, 114 transitions, 1144 flow [2024-01-27 15:37:39,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1144, PETRI_PLACES=98, PETRI_TRANSITIONS=114} [2024-01-27 15:37:39,291 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 51 predicate places. [2024-01-27 15:37:39,291 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 114 transitions, 1144 flow [2024-01-27 15:37:39,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:39,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:39,292 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 15:37:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:37:39,293 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 2 more)] === [2024-01-27 15:37:39,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1810118429, now seen corresponding path program 5 times [2024-01-27 15:37:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:39,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317381438] [2024-01-27 15:37:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:39,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317381438] [2024-01-27 15:37:39,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317381438] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:39,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:39,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:37:39,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137286779] [2024-01-27 15:37:39,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:39,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:37:39,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:39,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:37:39,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:37:39,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-27 15:37:39,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 114 transitions, 1144 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:39,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:39,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-27 15:37:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:42,976 INFO L124 PetriNetUnfolderBase]: 31947/43557 cut-off events. [2024-01-27 15:37:42,979 INFO L125 PetriNetUnfolderBase]: For 166219/170403 co-relation queries the response was YES. [2024-01-27 15:37:43,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178252 conditions, 43557 events. 31947/43557 cut-off events. For 166219/170403 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 260415 event pairs, 13245 based on Foata normal form. 1471/44913 useless extension candidates. Maximal degree in co-relation 147200. Up to 23520 conditions per place. [2024-01-27 15:37:43,249 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 168 selfloop transitions, 53 changer transitions 0/226 dead transitions. [2024-01-27 15:37:43,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 226 transitions, 2255 flow [2024-01-27 15:37:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:37:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:37:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-27 15:37:43,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2024-01-27 15:37:43,251 INFO L175 Difference]: Start difference. First operand has 98 places, 114 transitions, 1144 flow. Second operand 6 states and 164 transitions. [2024-01-27 15:37:43,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 226 transitions, 2255 flow [2024-01-27 15:37:43,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 226 transitions, 2229 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-27 15:37:43,649 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 1341 flow [2024-01-27 15:37:43,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1341, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2024-01-27 15:37:43,650 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 55 predicate places. [2024-01-27 15:37:43,650 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 1341 flow [2024-01-27 15:37:43,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:43,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:43,650 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 15:37:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:37:43,651 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 2 more)] === [2024-01-27 15:37:43,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1986527323, now seen corresponding path program 5 times [2024-01-27 15:37:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222699805] [2024-01-27 15:37:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222699805] [2024-01-27 15:37:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222699805] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:43,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:43,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:43,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048527557] [2024-01-27 15:37:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:43,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2024-01-27 15:37:43,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 1341 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 15:37:43,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:43,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2024-01-27 15:37:43,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:48,085 INFO L124 PetriNetUnfolderBase]: 41026/54946 cut-off events. [2024-01-27 15:37:48,086 INFO L125 PetriNetUnfolderBase]: For 264513/265117 co-relation queries the response was YES. [2024-01-27 15:37:48,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237395 conditions, 54946 events. 41026/54946 cut-off events. For 264513/265117 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 328194 event pairs, 13588 based on Foata normal form. 718/54224 useless extension candidates. Maximal degree in co-relation 173801. Up to 29411 conditions per place. [2024-01-27 15:37:48,507 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 243 selfloop transitions, 33 changer transitions 0/286 dead transitions. [2024-01-27 15:37:48,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 286 transitions, 3717 flow [2024-01-27 15:37:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:37:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:37:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-01-27 15:37:48,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2024-01-27 15:37:48,509 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 1341 flow. Second operand 5 states and 134 transitions. [2024-01-27 15:37:48,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 286 transitions, 3717 flow [2024-01-27 15:37:49,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 286 transitions, 3465 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-01-27 15:37:49,050 INFO L231 Difference]: Finished difference. Result has 106 places, 137 transitions, 1483 flow [2024-01-27 15:37:49,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1483, PETRI_PLACES=106, PETRI_TRANSITIONS=137} [2024-01-27 15:37:49,051 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 59 predicate places. [2024-01-27 15:37:49,051 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 137 transitions, 1483 flow [2024-01-27 15:37:49,051 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 15:37:49,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:49,052 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 15:37:49,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:37:49,052 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 2 more)] === [2024-01-27 15:37:49,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash 959507969, now seen corresponding path program 6 times [2024-01-27 15:37:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324811408] [2024-01-27 15:37:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:49,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324811408] [2024-01-27 15:37:49,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324811408] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:49,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:49,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:37:49,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461060725] [2024-01-27 15:37:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:49,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:37:49,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:37:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:37:49,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:49,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 137 transitions, 1483 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:49,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:49,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:49,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:37:54,112 INFO L124 PetriNetUnfolderBase]: 40794/55544 cut-off events. [2024-01-27 15:37:54,112 INFO L125 PetriNetUnfolderBase]: For 290977/293573 co-relation queries the response was YES. [2024-01-27 15:37:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261162 conditions, 55544 events. 40794/55544 cut-off events. For 290977/293573 co-relation queries the response was YES. Maximal size of possible extension queue 2282. Compared 350651 event pairs, 3446 based on Foata normal form. 654/54208 useless extension candidates. Maximal degree in co-relation 194542. Up to 23090 conditions per place. [2024-01-27 15:37:54,584 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 252 selfloop transitions, 49 changer transitions 15/328 dead transitions. [2024-01-27 15:37:54,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 328 transitions, 3903 flow [2024-01-27 15:37:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:37:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:37:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-01-27 15:37:54,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6146179401993356 [2024-01-27 15:37:54,586 INFO L175 Difference]: Start difference. First operand has 106 places, 137 transitions, 1483 flow. Second operand 7 states and 185 transitions. [2024-01-27 15:37:54,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 328 transitions, 3903 flow [2024-01-27 15:37:55,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 328 transitions, 3874 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:37:55,684 INFO L231 Difference]: Finished difference. Result has 115 places, 157 transitions, 1988 flow [2024-01-27 15:37:55,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1988, PETRI_PLACES=115, PETRI_TRANSITIONS=157} [2024-01-27 15:37:55,685 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 68 predicate places. [2024-01-27 15:37:55,685 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 157 transitions, 1988 flow [2024-01-27 15:37:55,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:37:55,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:37:55,685 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 15:37:55,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:37:55,685 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 2 more)] === [2024-01-27 15:37:55,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:37:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -14769261, now seen corresponding path program 7 times [2024-01-27 15:37:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:37:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176910903] [2024-01-27 15:37:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:37:55,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:37:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:37:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:37:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:37:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176910903] [2024-01-27 15:37:55,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176910903] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:37:55,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:37:55,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:37:55,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686732978] [2024-01-27 15:37:55,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:37:55,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:37:55,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:37:55,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:37:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:37:55,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-01-27 15:37:55,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 157 transitions, 1988 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 15:37:55,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:37:55,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-01-27 15:37:55,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand