./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:29:07,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:29:07,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:29:07,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:29:07,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:29:07,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:29:07,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:29:07,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:29:07,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:29:07,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:29:07,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:29:07,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:29:07,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:29:07,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:29:07,210 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:29:07,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:29:07,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:29:07,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:29:07,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:29:07,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:29:07,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:29:07,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:29:07,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:29:07,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:29:07,212 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:29:07,212 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:29:07,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:29:07,212 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:29:07,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:29:07,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:29:07,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:29:07,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:29:07,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:07,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:29:07,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:29:07,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:29:07,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:29:07,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:29:07,215 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:29:07,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:29:07,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:29:07,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:29:07,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:29:07,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-01-27 15:29:07,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:29:07,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:29:07,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:29:07,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:29:07,468 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:29:07,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2024-01-27 15:29:08,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:29:08,751 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:29:08,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2024-01-27 15:29:08,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a05289d/f4f5563337ed4391b4fbdd875b623acc/FLAG3e44f7493 [2024-01-27 15:29:08,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40a05289d/f4f5563337ed4391b4fbdd875b623acc [2024-01-27 15:29:08,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:29:08,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:29:08,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:08,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:29:08,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:29:08,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:08,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d8fd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08, skipping insertion in model container [2024-01-27 15:29:08,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:08,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:29:08,940 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3384,3397] [2024-01-27 15:29:08,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:08,960 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:29:08,981 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3384,3397] [2024-01-27 15:29:08,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:08,996 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:29:08,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08 WrapperNode [2024-01-27 15:29:08,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:08,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:08,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:29:08,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:29:09,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,035 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 187 [2024-01-27 15:29:09,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:09,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:29:09,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:29:09,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:29:09,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,077 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2024-01-27 15:29:09,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:29:09,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:29:09,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:29:09,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:29:09,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (1/1) ... [2024-01-27 15:29:09,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:09,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:09,141 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 15:29:09,156 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 15:29:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:29:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:29:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:29:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:29:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:29:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:29:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:29:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:29:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:29:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:29:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:29:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:29:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:29:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:29:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:29:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:29:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:29:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:29:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:29:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:29:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:29:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:29:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:29:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:29:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:29:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:29:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:29:09,200 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 15:29:09,338 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:29:09,380 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:29:09,700 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:29:09,700 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:29:09,993 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:29:09,993 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 15:29:09,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:09 BoogieIcfgContainer [2024-01-27 15:29:09,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:29:10,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:29:10,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:29:10,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:29:10,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:29:08" (1/3) ... [2024-01-27 15:29:10,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261eddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:10, skipping insertion in model container [2024-01-27 15:29:10,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:08" (2/3) ... [2024-01-27 15:29:10,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261eddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:10, skipping insertion in model container [2024-01-27 15:29:10,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:09" (3/3) ... [2024-01-27 15:29:10,014 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-01-27 15:29:10,022 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:29:10,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:29:10,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:29:10,041 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:29:10,099 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:29:10,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:29:10,172 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-27 15:29:10,172 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:29:10,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-27 15:29:10,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:29:10,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-27 15:29:10,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:29:10,197 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;@64b3ef73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:29:10,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:29:10,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:29:10,214 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-27 15:29:10,214 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:29:10,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:10,215 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 15:29:10,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:10,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 149974792, now seen corresponding path program 1 times [2024-01-27 15:29:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:10,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494973927] [2024-01-27 15:29:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:10,697 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 15:29:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:10,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494973927] [2024-01-27 15:29:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494973927] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:10,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:10,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430935119] [2024-01-27 15:29:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:10,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:10,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:10,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:10,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:10,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:11,213 INFO L124 PetriNetUnfolderBase]: 4008/5380 cut-off events. [2024-01-27 15:29:11,214 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-01-27 15:29:11,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11040 conditions, 5380 events. 4008/5380 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22219 event pairs, 1782 based on Foata normal form. 1/3956 useless extension candidates. Maximal degree in co-relation 9368. Up to 3650 conditions per place. [2024-01-27 15:29:11,236 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 67 selfloop transitions, 2 changer transitions 7/77 dead transitions. [2024-01-27 15:29:11,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 339 flow [2024-01-27 15:29:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-01-27 15:29:11,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816993464052288 [2024-01-27 15:29:11,248 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 3 states and 89 transitions. [2024-01-27 15:29:11,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 339 flow [2024-01-27 15:29:11,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 77 transitions, 317 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:11,260 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 110 flow [2024-01-27 15:29:11,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2024-01-27 15:29:11,265 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-01-27 15:29:11,265 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 110 flow [2024-01-27 15:29:11,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:11,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:11,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:29:11,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:11,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash -866106014, now seen corresponding path program 1 times [2024-01-27 15:29:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601714522] [2024-01-27 15:29:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:11,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:11,845 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 15:29:11,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601714522] [2024-01-27 15:29:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601714522] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:11,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94081654] [2024-01-27 15:29:11,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:11,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:11,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:11,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:11,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:11,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:11,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:11,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:11,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:12,310 INFO L124 PetriNetUnfolderBase]: 3678/5007 cut-off events. [2024-01-27 15:29:12,311 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-01-27 15:29:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10711 conditions, 5007 events. 3678/5007 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22112 event pairs, 377 based on Foata normal form. 1/3951 useless extension candidates. Maximal degree in co-relation 8785. Up to 3196 conditions per place. [2024-01-27 15:29:12,331 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 92 selfloop transitions, 2 changer transitions 16/111 dead transitions. [2024-01-27 15:29:12,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 111 transitions, 485 flow [2024-01-27 15:29:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-01-27 15:29:12,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2024-01-27 15:29:12,333 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 110 flow. Second operand 5 states and 128 transitions. [2024-01-27 15:29:12,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 111 transitions, 485 flow [2024-01-27 15:29:12,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 111 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:12,349 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 121 flow [2024-01-27 15:29:12,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-01-27 15:29:12,350 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-01-27 15:29:12,350 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 121 flow [2024-01-27 15:29:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:12,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:12,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:29:12,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:12,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 885184660, now seen corresponding path program 2 times [2024-01-27 15:29:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:12,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047000455] [2024-01-27 15:29:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:12,688 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 15:29:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:12,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047000455] [2024-01-27 15:29:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047000455] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:12,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306657748] [2024-01-27 15:29:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:12,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:12,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:12,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:12,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:12,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:13,206 INFO L124 PetriNetUnfolderBase]: 4422/6131 cut-off events. [2024-01-27 15:29:13,206 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2024-01-27 15:29:13,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13516 conditions, 6131 events. 4422/6131 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27183 event pairs, 2137 based on Foata normal form. 1/5259 useless extension candidates. Maximal degree in co-relation 13493. Up to 3957 conditions per place. [2024-01-27 15:29:13,231 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 88 selfloop transitions, 3 changer transitions 17/109 dead transitions. [2024-01-27 15:29:13,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 109 transitions, 499 flow [2024-01-27 15:29:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-01-27 15:29:13,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48627450980392156 [2024-01-27 15:29:13,235 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 121 flow. Second operand 5 states and 124 transitions. [2024-01-27 15:29:13,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 109 transitions, 499 flow [2024-01-27 15:29:13,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 109 transitions, 490 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:13,242 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 138 flow [2024-01-27 15:29:13,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-01-27 15:29:13,243 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-01-27 15:29:13,244 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 138 flow [2024-01-27 15:29:13,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:13,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:13,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:13,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:29:13,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:13,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2071982540, now seen corresponding path program 3 times [2024-01-27 15:29:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:13,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610675118] [2024-01-27 15:29:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:13,559 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 15:29:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610675118] [2024-01-27 15:29:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610675118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:13,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:13,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638445705] [2024-01-27 15:29:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:13,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:13,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:13,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:13,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:13,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:14,086 INFO L124 PetriNetUnfolderBase]: 4878/6790 cut-off events. [2024-01-27 15:29:14,087 INFO L125 PetriNetUnfolderBase]: For 2644/2644 co-relation queries the response was YES. [2024-01-27 15:29:14,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15488 conditions, 6790 events. 4878/6790 cut-off events. For 2644/2644 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 32821 event pairs, 697 based on Foata normal form. 1/5834 useless extension candidates. Maximal degree in co-relation 15459. Up to 4690 conditions per place. [2024-01-27 15:29:14,116 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 90 selfloop transitions, 3 changer transitions 17/111 dead transitions. [2024-01-27 15:29:14,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 111 transitions, 521 flow [2024-01-27 15:29:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-01-27 15:29:14,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2024-01-27 15:29:14,118 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 138 flow. Second operand 5 states and 126 transitions. [2024-01-27 15:29:14,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 111 transitions, 521 flow [2024-01-27 15:29:14,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 111 transitions, 510 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:14,135 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 153 flow [2024-01-27 15:29:14,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-01-27 15:29:14,136 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-01-27 15:29:14,136 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 153 flow [2024-01-27 15:29:14,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:14,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:14,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:14,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:29:14,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:14,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1339345260, now seen corresponding path program 4 times [2024-01-27 15:29:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:14,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094791819] [2024-01-27 15:29:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:14,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:14,428 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 15:29:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094791819] [2024-01-27 15:29:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094791819] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:14,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:14,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:14,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121896328] [2024-01-27 15:29:14,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:14,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:14,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:14,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:14,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:14,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:14,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:14,969 INFO L124 PetriNetUnfolderBase]: 5532/7766 cut-off events. [2024-01-27 15:29:14,969 INFO L125 PetriNetUnfolderBase]: For 4862/4862 co-relation queries the response was YES. [2024-01-27 15:29:14,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18094 conditions, 7766 events. 5532/7766 cut-off events. For 4862/4862 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 36258 event pairs, 3117 based on Foata normal form. 1/6702 useless extension candidates. Maximal degree in co-relation 18055. Up to 5619 conditions per place. [2024-01-27 15:29:15,001 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 87 selfloop transitions, 4 changer transitions 18/110 dead transitions. [2024-01-27 15:29:15,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 548 flow [2024-01-27 15:29:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-01-27 15:29:15,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47843137254901963 [2024-01-27 15:29:15,005 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 153 flow. Second operand 5 states and 122 transitions. [2024-01-27 15:29:15,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 548 flow [2024-01-27 15:29:15,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 110 transitions, 532 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:15,019 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 178 flow [2024-01-27 15:29:15,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-01-27 15:29:15,021 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-01-27 15:29:15,025 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 178 flow [2024-01-27 15:29:15,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:15,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:15,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:15,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:29:15,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash 854561616, now seen corresponding path program 5 times [2024-01-27 15:29:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717049588] [2024-01-27 15:29:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:15,479 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 15:29:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:15,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717049588] [2024-01-27 15:29:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717049588] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:15,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:15,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913506836] [2024-01-27 15:29:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:15,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:15,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:15,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:15,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:15,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:15,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:15,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:15,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:16,058 INFO L124 PetriNetUnfolderBase]: 5410/7565 cut-off events. [2024-01-27 15:29:16,059 INFO L125 PetriNetUnfolderBase]: For 6192/6192 co-relation queries the response was YES. [2024-01-27 15:29:16,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17985 conditions, 7565 events. 5410/7565 cut-off events. For 6192/6192 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 35404 event pairs, 2907 based on Foata normal form. 1/6509 useless extension candidates. Maximal degree in co-relation 17949. Up to 5409 conditions per place. [2024-01-27 15:29:16,092 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 97 selfloop transitions, 4 changer transitions 16/118 dead transitions. [2024-01-27 15:29:16,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 118 transitions, 585 flow [2024-01-27 15:29:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-01-27 15:29:16,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2024-01-27 15:29:16,094 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 178 flow. Second operand 5 states and 131 transitions. [2024-01-27 15:29:16,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 118 transitions, 585 flow [2024-01-27 15:29:16,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 569 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:16,112 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 177 flow [2024-01-27 15:29:16,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-01-27 15:29:16,115 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-01-27 15:29:16,115 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 177 flow [2024-01-27 15:29:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:16,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:16,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:29:16,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:16,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1322848554, now seen corresponding path program 6 times [2024-01-27 15:29:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182181009] [2024-01-27 15:29:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:16,585 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 15:29:16,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182181009] [2024-01-27 15:29:16,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182181009] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:16,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:16,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:29:16,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119023849] [2024-01-27 15:29:16,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:16,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:29:16,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:16,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:29:16,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:29:16,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:16,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:16,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:16,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:16,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:17,179 INFO L124 PetriNetUnfolderBase]: 5293/7388 cut-off events. [2024-01-27 15:29:17,179 INFO L125 PetriNetUnfolderBase]: For 6122/6122 co-relation queries the response was YES. [2024-01-27 15:29:17,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17519 conditions, 7388 events. 5293/7388 cut-off events. For 6122/6122 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 33710 event pairs, 3017 based on Foata normal form. 1/6337 useless extension candidates. Maximal degree in co-relation 17487. Up to 5620 conditions per place. [2024-01-27 15:29:17,212 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 93 selfloop transitions, 10 changer transitions 16/120 dead transitions. [2024-01-27 15:29:17,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 590 flow [2024-01-27 15:29:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-01-27 15:29:17,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477124183006536 [2024-01-27 15:29:17,213 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 177 flow. Second operand 6 states and 137 transitions. [2024-01-27 15:29:17,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 590 flow [2024-01-27 15:29:17,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 120 transitions, 579 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:17,228 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 231 flow [2024-01-27 15:29:17,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-01-27 15:29:17,229 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-01-27 15:29:17,229 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 231 flow [2024-01-27 15:29:17,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:17,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:17,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:29:17,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:17,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash -165211097, now seen corresponding path program 1 times [2024-01-27 15:29:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:17,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729177047] [2024-01-27 15:29:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:17,299 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 15:29:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729177047] [2024-01-27 15:29:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729177047] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:17,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139725072] [2024-01-27 15:29:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:17,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:17,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:17,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:17,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:17,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:17,814 INFO L124 PetriNetUnfolderBase]: 6349/8881 cut-off events. [2024-01-27 15:29:17,815 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2024-01-27 15:29:17,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20972 conditions, 8881 events. 6349/8881 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 43503 event pairs, 497 based on Foata normal form. 72/7651 useless extension candidates. Maximal degree in co-relation 20931. Up to 5624 conditions per place. [2024-01-27 15:29:17,851 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 98 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2024-01-27 15:29:17,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 581 flow [2024-01-27 15:29:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:17,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-01-27 15:29:17,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2024-01-27 15:29:17,853 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 231 flow. Second operand 4 states and 109 transitions. [2024-01-27 15:29:17,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 581 flow [2024-01-27 15:29:17,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 574 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:17,868 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 285 flow [2024-01-27 15:29:17,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-01-27 15:29:17,869 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-01-27 15:29:17,869 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 285 flow [2024-01-27 15:29:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:17,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:17,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:29:17,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:17,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash 816109431, now seen corresponding path program 2 times [2024-01-27 15:29:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:17,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546995988] [2024-01-27 15:29:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:17,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:17,926 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 15:29:17,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546995988] [2024-01-27 15:29:17,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546995988] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:17,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:17,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:17,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622504504] [2024-01-27 15:29:17,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:17,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:17,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:17,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:17,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:17,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:17,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:18,445 INFO L124 PetriNetUnfolderBase]: 5957/8342 cut-off events. [2024-01-27 15:29:18,445 INFO L125 PetriNetUnfolderBase]: For 7791/7791 co-relation queries the response was YES. [2024-01-27 15:29:18,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20421 conditions, 8342 events. 5957/8342 cut-off events. For 7791/7791 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 40053 event pairs, 667 based on Foata normal form. 72/7188 useless extension candidates. Maximal degree in co-relation 20361. Up to 5112 conditions per place. [2024-01-27 15:29:18,472 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 105 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2024-01-27 15:29:18,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 114 transitions, 694 flow [2024-01-27 15:29:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-01-27 15:29:18,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-01-27 15:29:18,473 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 285 flow. Second operand 4 states and 111 transitions. [2024-01-27 15:29:18,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 114 transitions, 694 flow [2024-01-27 15:29:18,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 114 transitions, 694 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:18,488 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 370 flow [2024-01-27 15:29:18,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=370, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-01-27 15:29:18,489 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-01-27 15:29:18,489 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 370 flow [2024-01-27 15:29:18,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:18,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:18,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:18,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:29:18,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:18,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1038554639, now seen corresponding path program 1 times [2024-01-27 15:29:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:18,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468491047] [2024-01-27 15:29:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:18,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:18,552 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 15:29:18,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:18,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468491047] [2024-01-27 15:29:18,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468491047] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:18,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:18,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:18,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351279197] [2024-01-27 15:29:18,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:18,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:18,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:18,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:18,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:18,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:18,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:18,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:19,123 INFO L124 PetriNetUnfolderBase]: 5927/8312 cut-off events. [2024-01-27 15:29:19,124 INFO L125 PetriNetUnfolderBase]: For 9578/9578 co-relation queries the response was YES. [2024-01-27 15:29:19,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21180 conditions, 8312 events. 5927/8312 cut-off events. For 9578/9578 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 39864 event pairs, 1765 based on Foata normal form. 30/7116 useless extension candidates. Maximal degree in co-relation 21117. Up to 5146 conditions per place. [2024-01-27 15:29:19,160 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 106 selfloop transitions, 12 changer transitions 3/122 dead transitions. [2024-01-27 15:29:19,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 122 transitions, 772 flow [2024-01-27 15:29:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-01-27 15:29:19,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48627450980392156 [2024-01-27 15:29:19,162 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 370 flow. Second operand 5 states and 124 transitions. [2024-01-27 15:29:19,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 122 transitions, 772 flow [2024-01-27 15:29:19,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 770 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:19,184 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 448 flow [2024-01-27 15:29:19,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-01-27 15:29:19,185 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2024-01-27 15:29:19,185 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 448 flow [2024-01-27 15:29:19,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:19,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:19,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:29:19,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:19,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1088265837, now seen corresponding path program 2 times [2024-01-27 15:29:19,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090973744] [2024-01-27 15:29:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:19,252 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 15:29:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090973744] [2024-01-27 15:29:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090973744] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:19,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324174121] [2024-01-27 15:29:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:19,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:19,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:19,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:19,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:19,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:19,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:19,885 INFO L124 PetriNetUnfolderBase]: 6645/9323 cut-off events. [2024-01-27 15:29:19,886 INFO L125 PetriNetUnfolderBase]: For 13864/13864 co-relation queries the response was YES. [2024-01-27 15:29:19,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24067 conditions, 9323 events. 6645/9323 cut-off events. For 13864/13864 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 46493 event pairs, 1209 based on Foata normal form. 70/8011 useless extension candidates. Maximal degree in co-relation 24002. Up to 6312 conditions per place. [2024-01-27 15:29:19,942 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 100 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-01-27 15:29:19,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 770 flow [2024-01-27 15:29:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-01-27 15:29:19,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2024-01-27 15:29:19,944 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 448 flow. Second operand 4 states and 109 transitions. [2024-01-27 15:29:19,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 770 flow [2024-01-27 15:29:19,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 745 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:19,982 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 471 flow [2024-01-27 15:29:19,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-01-27 15:29:19,983 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-01-27 15:29:19,983 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 471 flow [2024-01-27 15:29:19,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:19,983 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, 1] [2024-01-27 15:29:19,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:29:19,984 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:19,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 323017169, now seen corresponding path program 3 times [2024-01-27 15:29:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:19,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389975872] [2024-01-27 15:29:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:20,044 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 15:29:20,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:20,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389975872] [2024-01-27 15:29:20,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389975872] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:20,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:20,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538362331] [2024-01-27 15:29:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:20,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:20,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:20,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:20,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:20,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:20,691 INFO L124 PetriNetUnfolderBase]: 6297/8828 cut-off events. [2024-01-27 15:29:20,691 INFO L125 PetriNetUnfolderBase]: For 15213/15213 co-relation queries the response was YES. [2024-01-27 15:29:20,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23238 conditions, 8828 events. 6297/8828 cut-off events. For 15213/15213 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 43313 event pairs, 1591 based on Foata normal form. 28/7550 useless extension candidates. Maximal degree in co-relation 23171. Up to 5990 conditions per place. [2024-01-27 15:29:20,725 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 108 selfloop transitions, 11 changer transitions 2/122 dead transitions. [2024-01-27 15:29:20,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 856 flow [2024-01-27 15:29:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-27 15:29:20,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745098039215686 [2024-01-27 15:29:20,727 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 471 flow. Second operand 5 states and 121 transitions. [2024-01-27 15:29:20,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 856 flow [2024-01-27 15:29:20,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 122 transitions, 846 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:20,758 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 489 flow [2024-01-27 15:29:20,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=489, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-01-27 15:29:20,759 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-01-27 15:29:20,760 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 489 flow [2024-01-27 15:29:20,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:20,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:20,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:29:20,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:20,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:20,761 INFO L85 PathProgramCache]: Analyzing trace with hash -624760457, now seen corresponding path program 4 times [2024-01-27 15:29:20,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:20,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793143269] [2024-01-27 15:29:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:20,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:20,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:20,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793143269] [2024-01-27 15:29:20,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793143269] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:20,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:20,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195388913] [2024-01-27 15:29:20,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:20,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:20,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:20,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:20,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:20,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:20,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:21,396 INFO L124 PetriNetUnfolderBase]: 6317/8872 cut-off events. [2024-01-27 15:29:21,396 INFO L125 PetriNetUnfolderBase]: For 16803/16803 co-relation queries the response was YES. [2024-01-27 15:29:21,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23311 conditions, 8872 events. 6317/8872 cut-off events. For 16803/16803 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 43313 event pairs, 1453 based on Foata normal form. 40/7582 useless extension candidates. Maximal degree in co-relation 23243. Up to 7010 conditions per place. [2024-01-27 15:29:21,438 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 103 selfloop transitions, 7 changer transitions 9/120 dead transitions. [2024-01-27 15:29:21,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 120 transitions, 854 flow [2024-01-27 15:29:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-01-27 15:29:21,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-01-27 15:29:21,440 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 489 flow. Second operand 4 states and 111 transitions. [2024-01-27 15:29:21,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 120 transitions, 854 flow [2024-01-27 15:29:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 120 transitions, 820 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:21,478 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 448 flow [2024-01-27 15:29:21,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-01-27 15:29:21,479 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-01-27 15:29:21,479 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 448 flow [2024-01-27 15:29:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:21,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:29:21,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:21,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 856026007, now seen corresponding path program 3 times [2024-01-27 15:29:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:21,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647570241] [2024-01-27 15:29:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:21,522 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 15:29:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647570241] [2024-01-27 15:29:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647570241] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:21,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:21,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613778317] [2024-01-27 15:29:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:21,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:21,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:21,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:21,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:21,964 INFO L124 PetriNetUnfolderBase]: 5263/7354 cut-off events. [2024-01-27 15:29:21,964 INFO L125 PetriNetUnfolderBase]: For 11331/11331 co-relation queries the response was YES. [2024-01-27 15:29:21,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19299 conditions, 7354 events. 5263/7354 cut-off events. For 11331/11331 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 34240 event pairs, 2521 based on Foata normal form. 58/6282 useless extension candidates. Maximal degree in co-relation 19233. Up to 5101 conditions per place. [2024-01-27 15:29:21,994 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 124 selfloop transitions, 5 changer transitions 6/136 dead transitions. [2024-01-27 15:29:21,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 868 flow [2024-01-27 15:29:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:21,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-01-27 15:29:21,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-01-27 15:29:21,995 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 448 flow. Second operand 5 states and 134 transitions. [2024-01-27 15:29:21,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 868 flow [2024-01-27 15:29:22,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 838 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:22,015 INFO L231 Difference]: Finished difference. Result has 87 places, 69 transitions, 400 flow [2024-01-27 15:29:22,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=87, PETRI_TRANSITIONS=69} [2024-01-27 15:29:22,015 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-01-27 15:29:22,016 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 69 transitions, 400 flow [2024-01-27 15:29:22,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:22,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:22,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:29:22,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:22,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash 300191985, now seen corresponding path program 4 times [2024-01-27 15:29:22,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:22,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138310792] [2024-01-27 15:29:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:22,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:22,076 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 15:29:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:22,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138310792] [2024-01-27 15:29:22,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138310792] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:22,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:22,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:22,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531932503] [2024-01-27 15:29:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:22,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:22,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:22,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 69 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:22,440 INFO L124 PetriNetUnfolderBase]: 4625/6423 cut-off events. [2024-01-27 15:29:22,440 INFO L125 PetriNetUnfolderBase]: For 8116/8116 co-relation queries the response was YES. [2024-01-27 15:29:22,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16612 conditions, 6423 events. 4625/6423 cut-off events. For 8116/8116 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28514 event pairs, 907 based on Foata normal form. 70/5463 useless extension candidates. Maximal degree in co-relation 16548. Up to 5286 conditions per place. [2024-01-27 15:29:22,473 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 93 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-01-27 15:29:22,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 674 flow [2024-01-27 15:29:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-01-27 15:29:22,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2024-01-27 15:29:22,475 INFO L175 Difference]: Start difference. First operand has 87 places, 69 transitions, 400 flow. Second operand 4 states and 101 transitions. [2024-01-27 15:29:22,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 674 flow [2024-01-27 15:29:22,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 649 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-27 15:29:22,488 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 376 flow [2024-01-27 15:29:22,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-01-27 15:29:22,489 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-01-27 15:29:22,489 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 376 flow [2024-01-27 15:29:22,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:22,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:22,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:29:22,489 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:22,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 368026323, now seen corresponding path program 5 times [2024-01-27 15:29:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383773138] [2024-01-27 15:29:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:22,535 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 15:29:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:22,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383773138] [2024-01-27 15:29:22,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383773138] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:22,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:22,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419610696] [2024-01-27 15:29:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:22,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:22,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:22,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:22,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:22,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:22,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:22,862 INFO L124 PetriNetUnfolderBase]: 4275/5920 cut-off events. [2024-01-27 15:29:22,862 INFO L125 PetriNetUnfolderBase]: For 4355/4355 co-relation queries the response was YES. [2024-01-27 15:29:22,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15419 conditions, 5920 events. 4275/5920 cut-off events. For 4355/4355 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 26109 event pairs, 2759 based on Foata normal form. 20/4990 useless extension candidates. Maximal degree in co-relation 15359. Up to 5743 conditions per place. [2024-01-27 15:29:22,888 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 64 selfloop transitions, 0 changer transitions 17/82 dead transitions. [2024-01-27 15:29:22,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 552 flow [2024-01-27 15:29:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-01-27 15:29:22,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-27 15:29:22,890 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 376 flow. Second operand 4 states and 78 transitions. [2024-01-27 15:29:22,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 552 flow [2024-01-27 15:29:22,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 531 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:22,900 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 319 flow [2024-01-27 15:29:22,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-01-27 15:29:22,900 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-01-27 15:29:22,901 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 319 flow [2024-01-27 15:29:22,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:22,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:22,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:29:22,901 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:22,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 320689617, now seen corresponding path program 5 times [2024-01-27 15:29:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823731213] [2024-01-27 15:29:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:22,945 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 15:29:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:22,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823731213] [2024-01-27 15:29:22,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823731213] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:22,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976155771] [2024-01-27 15:29:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:22,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:22,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:22,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:22,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:22,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:23,237 INFO L124 PetriNetUnfolderBase]: 3823/5257 cut-off events. [2024-01-27 15:29:23,238 INFO L125 PetriNetUnfolderBase]: For 2730/2730 co-relation queries the response was YES. [2024-01-27 15:29:23,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13369 conditions, 5257 events. 3823/5257 cut-off events. For 2730/2730 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22092 event pairs, 2431 based on Foata normal form. 20/4419 useless extension candidates. Maximal degree in co-relation 13356. Up to 5101 conditions per place. [2024-01-27 15:29:23,262 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 61 selfloop transitions, 0 changer transitions 15/77 dead transitions. [2024-01-27 15:29:23,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 482 flow [2024-01-27 15:29:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-01-27 15:29:23,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-01-27 15:29:23,263 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 319 flow. Second operand 4 states and 75 transitions. [2024-01-27 15:29:23,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 482 flow [2024-01-27 15:29:23,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 479 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:23,268 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 281 flow [2024-01-27 15:29:23,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-01-27 15:29:23,269 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-01-27 15:29:23,269 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 281 flow [2024-01-27 15:29:23,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:23,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:23,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:23,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:29:23,270 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:23,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 760034802, now seen corresponding path program 1 times [2024-01-27 15:29:23,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:23,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022413942] [2024-01-27 15:29:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:23,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:23,647 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 15:29:23,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022413942] [2024-01-27 15:29:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022413942] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:23,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:23,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:29:23,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630272616] [2024-01-27 15:29:23,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:23,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:29:23,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:23,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 281 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:23,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:23,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:24,445 INFO L124 PetriNetUnfolderBase]: 9217/12684 cut-off events. [2024-01-27 15:29:24,445 INFO L125 PetriNetUnfolderBase]: For 5765/5765 co-relation queries the response was YES. [2024-01-27 15:29:24,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31829 conditions, 12684 events. 9217/12684 cut-off events. For 5765/5765 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 62392 event pairs, 1930 based on Foata normal form. 1/10738 useless extension candidates. Maximal degree in co-relation 31817. Up to 3667 conditions per place. [2024-01-27 15:29:24,507 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 182 selfloop transitions, 16 changer transitions 1/200 dead transitions. [2024-01-27 15:29:24,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 200 transitions, 1238 flow [2024-01-27 15:29:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-01-27 15:29:24,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226579520697168 [2024-01-27 15:29:24,511 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 281 flow. Second operand 9 states and 194 transitions. [2024-01-27 15:29:24,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 200 transitions, 1238 flow [2024-01-27 15:29:24,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 200 transitions, 1210 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:24,529 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 370 flow [2024-01-27 15:29:24,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-01-27 15:29:24,529 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-27 15:29:24,530 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 370 flow [2024-01-27 15:29:24,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:24,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:24,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:24,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:29:24,530 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:24,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2083156720, now seen corresponding path program 1 times [2024-01-27 15:29:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957364011] [2024-01-27 15:29:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:24,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:24,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957364011] [2024-01-27 15:29:24,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957364011] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:24,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889092361] [2024-01-27 15:29:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:24,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:24,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:29:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:25,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-27 15:29:25,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:25,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:26,762 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 15:29:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889092361] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:26,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 24 [2024-01-27 15:29:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139242689] [2024-01-27 15:29:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:29:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:29:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-01-27 15:29:26,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:26,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:26,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:26,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:26,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:29,296 INFO L124 PetriNetUnfolderBase]: 18724/25959 cut-off events. [2024-01-27 15:29:29,296 INFO L125 PetriNetUnfolderBase]: For 14254/14254 co-relation queries the response was YES. [2024-01-27 15:29:29,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71491 conditions, 25959 events. 18724/25959 cut-off events. For 14254/14254 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 144563 event pairs, 3189 based on Foata normal form. 1/23586 useless extension candidates. Maximal degree in co-relation 71475. Up to 5863 conditions per place. [2024-01-27 15:29:29,427 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 385 selfloop transitions, 35 changer transitions 19/440 dead transitions. [2024-01-27 15:29:29,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 440 transitions, 2817 flow [2024-01-27 15:29:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-27 15:29:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-27 15:29:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 403 transitions. [2024-01-27 15:29:29,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526797385620915 [2024-01-27 15:29:29,430 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 370 flow. Second operand 15 states and 403 transitions. [2024-01-27 15:29:29,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 440 transitions, 2817 flow [2024-01-27 15:29:29,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 440 transitions, 2807 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:29,465 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 601 flow [2024-01-27 15:29:29,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=601, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-01-27 15:29:29,466 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-01-27 15:29:29,466 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 601 flow [2024-01-27 15:29:29,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:29,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:29,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:29,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:29:29,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:29,677 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:29,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash -716661643, now seen corresponding path program 1 times [2024-01-27 15:29:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:29,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104498360] [2024-01-27 15:29:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:29,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:29,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104498360] [2024-01-27 15:29:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104498360] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621867323] [2024-01-27 15:29:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:29,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:29,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:29,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:29:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:30,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 30 conjunts are in the unsatisfiable core [2024-01-27 15:29:30,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:30,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:31,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621867323] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:31,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:31,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-01-27 15:29:31,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006109851] [2024-01-27 15:29:31,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:31,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:29:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:29:31,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-01-27 15:29:31,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:31,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 601 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:31,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:31,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:38,123 INFO L124 PetriNetUnfolderBase]: 42830/60312 cut-off events. [2024-01-27 15:29:38,124 INFO L125 PetriNetUnfolderBase]: For 69040/69040 co-relation queries the response was YES. [2024-01-27 15:29:38,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186366 conditions, 60312 events. 42830/60312 cut-off events. For 69040/69040 co-relation queries the response was YES. Maximal size of possible extension queue 2135. Compared 391268 event pairs, 5204 based on Foata normal form. 1/54895 useless extension candidates. Maximal degree in co-relation 186341. Up to 16573 conditions per place. [2024-01-27 15:29:38,551 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 439 selfloop transitions, 165 changer transitions 11/616 dead transitions. [2024-01-27 15:29:38,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 616 transitions, 4941 flow [2024-01-27 15:29:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:29:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:29:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 353 transitions. [2024-01-27 15:29:38,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943977591036415 [2024-01-27 15:29:38,553 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 601 flow. Second operand 14 states and 353 transitions. [2024-01-27 15:29:38,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 616 transitions, 4941 flow [2024-01-27 15:29:39,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 616 transitions, 4694 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:39,501 INFO L231 Difference]: Finished difference. Result has 118 places, 285 transitions, 2571 flow [2024-01-27 15:29:39,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2571, PETRI_PLACES=118, PETRI_TRANSITIONS=285} [2024-01-27 15:29:39,502 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2024-01-27 15:29:39,502 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 285 transitions, 2571 flow [2024-01-27 15:29:39,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:39,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:39,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:39,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:39,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-01-27 15:29:39,715 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:39,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1918703645, now seen corresponding path program 2 times [2024-01-27 15:29:39,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:39,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820775650] [2024-01-27 15:29:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:39,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820775650] [2024-01-27 15:29:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820775650] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416268618] [2024-01-27 15:29:39,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:39,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:39,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:39,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:29:39,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:39,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:39,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 30 conjunts are in the unsatisfiable core [2024-01-27 15:29:39,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:40,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416268618] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:40,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 16 [2024-01-27 15:29:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081119289] [2024-01-27 15:29:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:40,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:29:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:29:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:29:40,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:40,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 285 transitions, 2571 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:40,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:40,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:40,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:47,253 INFO L124 PetriNetUnfolderBase]: 50222/70386 cut-off events. [2024-01-27 15:29:47,253 INFO L125 PetriNetUnfolderBase]: For 165151/165151 co-relation queries the response was YES. [2024-01-27 15:29:47,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257137 conditions, 70386 events. 50222/70386 cut-off events. For 165151/165151 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 461749 event pairs, 6442 based on Foata normal form. 1/63920 useless extension candidates. Maximal degree in co-relation 257102. Up to 37710 conditions per place. [2024-01-27 15:29:47,970 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 371 selfloop transitions, 254 changer transitions 3/629 dead transitions. [2024-01-27 15:29:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 629 transitions, 6216 flow [2024-01-27 15:29:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 15:29:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 15:29:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 293 transitions. [2024-01-27 15:29:47,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419306184012066 [2024-01-27 15:29:47,972 INFO L175 Difference]: Start difference. First operand has 118 places, 285 transitions, 2571 flow. Second operand 13 states and 293 transitions. [2024-01-27 15:29:47,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 629 transitions, 6216 flow [2024-01-27 15:29:50,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 629 transitions, 6143 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:50,951 INFO L231 Difference]: Finished difference. Result has 135 places, 396 transitions, 4395 flow [2024-01-27 15:29:50,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4395, PETRI_PLACES=135, PETRI_TRANSITIONS=396} [2024-01-27 15:29:50,951 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2024-01-27 15:29:50,952 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 396 transitions, 4395 flow [2024-01-27 15:29:50,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:50,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:50,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:50,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-27 15:29:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:51,164 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:51,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 130364012, now seen corresponding path program 1 times [2024-01-27 15:29:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334340613] [2024-01-27 15:29:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334340613] [2024-01-27 15:29:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334340613] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703797308] [2024-01-27 15:29:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:51,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:51,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:51,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:29:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:51,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjunts are in the unsatisfiable core [2024-01-27 15:29:51,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:51,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703797308] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:53,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 12] total 24 [2024-01-27 15:29:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195654174] [2024-01-27 15:29:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:53,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:29:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:53,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:29:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-01-27 15:29:53,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:29:53,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 396 transitions, 4395 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:53,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:53,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:29:53,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:04,091 INFO L124 PetriNetUnfolderBase]: 63827/89572 cut-off events. [2024-01-27 15:30:04,091 INFO L125 PetriNetUnfolderBase]: For 267439/267439 co-relation queries the response was YES. [2024-01-27 15:30:04,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346113 conditions, 89572 events. 63827/89572 cut-off events. For 267439/267439 co-relation queries the response was YES. Maximal size of possible extension queue 3177. Compared 606286 event pairs, 7126 based on Foata normal form. 2/81274 useless extension candidates. Maximal degree in co-relation 346071. Up to 32414 conditions per place. [2024-01-27 15:30:05,056 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 496 selfloop transitions, 408 changer transitions 12/917 dead transitions. [2024-01-27 15:30:05,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 917 transitions, 10551 flow [2024-01-27 15:30:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:30:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:30:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 390 transitions. [2024-01-27 15:30:05,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2024-01-27 15:30:05,058 INFO L175 Difference]: Start difference. First operand has 135 places, 396 transitions, 4395 flow. Second operand 16 states and 390 transitions. [2024-01-27 15:30:05,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 917 transitions, 10551 flow [2024-01-27 15:30:09,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 917 transitions, 10271 flow, removed 140 selfloop flow, removed 0 redundant places. [2024-01-27 15:30:09,889 INFO L231 Difference]: Finished difference. Result has 162 places, 560 transitions, 7532 flow [2024-01-27 15:30:09,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7532, PETRI_PLACES=162, PETRI_TRANSITIONS=560} [2024-01-27 15:30:09,890 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 117 predicate places. [2024-01-27 15:30:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 560 transitions, 7532 flow [2024-01-27 15:30:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:09,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:09,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:09,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-27 15:30:10,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:10,103 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:30:10,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1628263635, now seen corresponding path program 3 times [2024-01-27 15:30:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:10,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459165285] [2024-01-27 15:30:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:10,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459165285] [2024-01-27 15:30:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459165285] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324655997] [2024-01-27 15:30:10,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:30:10,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:10,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:10,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:30:10,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:30:10,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:10,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-27 15:30:10,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:30:10,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:30:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324655997] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:10,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:30:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-01-27 15:30:10,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770600133] [2024-01-27 15:30:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:10,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 15:30:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 15:30:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-01-27 15:30:10,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 51 [2024-01-27 15:30:10,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 560 transitions, 7532 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:10,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:10,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 51 [2024-01-27 15:30:10,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand