./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 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-array-int-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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:39:14,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:39:14,072 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:39:14,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:39:14,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:39:14,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:39:14,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:39:14,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:39:14,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:39:14,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:39:14,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:39:14,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:39:14,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:39:14,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:39:14,091 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:39:14,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:39:14,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:39:14,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:39:14,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:39:14,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:39:14,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:39:14,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:39:14,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:39:14,094 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:39:14,094 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:39:14,094 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:39:14,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:39:14,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:39:14,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:39:14,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:39:14,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:39:14,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:39:14,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:39:14,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:39:14,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:39:14,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:39:14,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:39:14,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:39:14,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:39:14,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:39:14,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:39:14,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:39:14,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:39:14,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:39:14,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:39:14,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:39:14,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:39:14,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:39:14,270 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:39:14,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2024-02-20 11:39:15,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:39:15,500 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:39:15,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2024-02-20 11:39:15,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffea613a/26238a60d51649a987e28c6fb47f8e36/FLAG97fb0d911 [2024-02-20 11:39:15,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffea613a/26238a60d51649a987e28c6fb47f8e36 [2024-02-20 11:39:15,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:39:15,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:39:15,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:39:15,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:39:15,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:39:15,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed35840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15, skipping insertion in model container [2024-02-20 11:39:15,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:39:15,665 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-array-int-subst.wvr.c[2781,2794] [2024-02-20 11:39:15,672 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:39:15,678 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:39:15,694 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-array-int-subst.wvr.c[2781,2794] [2024-02-20 11:39:15,697 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:39:15,713 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:39:15,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15 WrapperNode [2024-02-20 11:39:15,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:39:15,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:39:15,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:39:15,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:39:15,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,766 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 289 [2024-02-20 11:39:15,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:39:15,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:39:15,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:39:15,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:39:15,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,818 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 2, 2, 15]. 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, 1, 1, 1, 3]. [2024-02-20 11:39:15,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:39:15,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:39:15,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:39:15,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:39:15,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (1/1) ... [2024-02-20 11:39:15,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:39:15,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:15,906 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) [2024-02-20 11:39:15,924 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 [2024-02-20 11:39:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:39:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:39:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:39:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:39:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:39:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:39:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 11:39:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:39:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:39:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:39:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:39:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 11:39:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:39:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:39:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:39:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:39:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 11:39:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 11:39:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:39:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:39:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:39:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:39:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 11:39:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 11:39:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:39:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:39:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:39:15,963 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:39:16,085 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:39:16,087 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:39:16,352 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:39:16,352 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:39:16,688 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:39:16,688 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-20 11:39:16,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:39:16 BoogieIcfgContainer [2024-02-20 11:39:16,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:39:16,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:39:16,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:39:16,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:39:16,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:39:15" (1/3) ... [2024-02-20 11:39:16,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8b0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:39:16, skipping insertion in model container [2024-02-20 11:39:16,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:39:15" (2/3) ... [2024-02-20 11:39:16,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8b0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:39:16, skipping insertion in model container [2024-02-20 11:39:16,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:39:16" (3/3) ... [2024-02-20 11:39:16,696 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-02-20 11:39:16,711 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:39:16,711 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:39:16,711 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:39:16,758 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 11:39:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 105 flow [2024-02-20 11:39:16,832 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-02-20 11:39:16,833 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:39:16,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 9/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-02-20 11:39:16,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 105 flow [2024-02-20 11:39:16,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 94 flow [2024-02-20 11:39:16,851 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:39:16,857 INFO L369 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=All, 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;@4fccdf4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:39:16,858 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 11:39:16,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:39:16,875 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-02-20 11:39:16,875 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:39:16,875 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:16,876 INFO L234 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] [2024-02-20 11:39:16,876 INFO L432 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)] === [2024-02-20 11:39:16,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 360711080, now seen corresponding path program 1 times [2024-02-20 11:39:16,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:16,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663067039] [2024-02-20 11:39:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:16,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:17,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663067039] [2024-02-20 11:39:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663067039] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:17,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:39:17,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:39:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551233891] [2024-02-20 11:39:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:17,809 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:39:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:39:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-02-20 11:39:17,838 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:17,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 94 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:17,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:17,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:17,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:18,536 INFO L124 PetriNetUnfolderBase]: 3007/4115 cut-off events. [2024-02-20 11:39:18,536 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2024-02-20 11:39:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 4115 events. 3007/4115 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17041 event pairs, 248 based on Foata normal form. 1/2974 useless extension candidates. Maximal degree in co-relation 4646. Up to 1349 conditions per place. [2024-02-20 11:39:18,553 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 126 selfloop transitions, 16 changer transitions 1/144 dead transitions. [2024-02-20 11:39:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 144 transitions, 643 flow [2024-02-20 11:39:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:39:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:39:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-02-20 11:39:18,562 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-02-20 11:39:18,565 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-02-20 11:39:18,565 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 144 transitions, 643 flow [2024-02-20 11:39:18,565 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:18,565 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:18,565 INFO L234 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] [2024-02-20 11:39:18,566 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:39:18,566 INFO L432 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)] === [2024-02-20 11:39:18,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash 184401718, now seen corresponding path program 2 times [2024-02-20 11:39:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:18,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139898916] [2024-02-20 11:39:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:18,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139898916] [2024-02-20 11:39:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139898916] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:18,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:39:18,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:39:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914077425] [2024-02-20 11:39:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:18,838 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:39:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:39:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-02-20 11:39:18,840 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:18,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 144 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:18,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:18,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:18,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:19,352 INFO L124 PetriNetUnfolderBase]: 3361/4649 cut-off events. [2024-02-20 11:39:19,353 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-02-20 11:39:19,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14208 conditions, 4649 events. 3361/4649 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19950 event pairs, 248 based on Foata normal form. 1/3404 useless extension candidates. Maximal degree in co-relation 8273. Up to 1985 conditions per place. [2024-02-20 11:39:19,371 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 174 selfloop transitions, 15 changer transitions 2/192 dead transitions. [2024-02-20 11:39:19,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 192 transitions, 1238 flow [2024-02-20 11:39:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:39:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:39:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-02-20 11:39:19,377 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-02-20 11:39:19,377 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-02-20 11:39:19,377 INFO L507 AbstractCegarLoop]: Abstraction has has 56 places, 192 transitions, 1238 flow [2024-02-20 11:39:19,378 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:19,378 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:19,378 INFO L234 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] [2024-02-20 11:39:19,378 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:39:19,379 INFO L432 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)] === [2024-02-20 11:39:19,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1935782836, now seen corresponding path program 1 times [2024-02-20 11:39:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10389211] [2024-02-20 11:39:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:19,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:19,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10389211] [2024-02-20 11:39:19,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10389211] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:19,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490981595] [2024-02-20 11:39:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:19,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:19,553 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) [2024-02-20 11:39:19,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:39:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:19,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 11:39:19,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:19,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:39:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490981595] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:39:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-02-20 11:39:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876629053] [2024-02-20 11:39:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:19,821 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:39:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:39:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:39:19,822 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:19,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 192 transitions, 1238 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:19,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:19,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:20,509 INFO L124 PetriNetUnfolderBase]: 5851/8076 cut-off events. [2024-02-20 11:39:20,509 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2024-02-20 11:39:20,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32797 conditions, 8076 events. 5851/8076 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 37796 event pairs, 662 based on Foata normal form. 1/5919 useless extension candidates. Maximal degree in co-relation 11004. Up to 4642 conditions per place. [2024-02-20 11:39:20,556 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 293 selfloop transitions, 10 changer transitions 13/317 dead transitions. [2024-02-20 11:39:20,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 317 transitions, 2689 flow [2024-02-20 11:39:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:39:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:39:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-02-20 11:39:20,558 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-02-20 11:39:20,559 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-02-20 11:39:20,559 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 317 transitions, 2689 flow [2024-02-20 11:39:20,559 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:20,559 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:20,559 INFO L234 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] [2024-02-20 11:39:20,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:39:20,771 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:20,771 INFO L432 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)] === [2024-02-20 11:39:20,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1859029634, now seen corresponding path program 1 times [2024-02-20 11:39:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886431268] [2024-02-20 11:39:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886431268] [2024-02-20 11:39:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886431268] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191190623] [2024-02-20 11:39:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:20,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:20,917 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) [2024-02-20 11:39:20,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:39:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:21,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 11:39:21,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:21,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:39:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191190623] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:39:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-02-20 11:39:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481463409] [2024-02-20 11:39:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:21,174 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:39:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:39:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:39:21,175 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:21,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 317 transitions, 2689 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:21,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:21,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:21,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:22,123 INFO L124 PetriNetUnfolderBase]: 7299/10084 cut-off events. [2024-02-20 11:39:22,124 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-02-20 11:39:22,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51052 conditions, 10084 events. 7299/10084 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 49140 event pairs, 904 based on Foata normal form. 1/7406 useless extension candidates. Maximal degree in co-relation 13735. Up to 6649 conditions per place. [2024-02-20 11:39:22,170 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 358 selfloop transitions, 10 changer transitions 24/393 dead transitions. [2024-02-20 11:39:22,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 393 transitions, 4126 flow [2024-02-20 11:39:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:39:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:39:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-02-20 11:39:22,171 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6150793650793651 [2024-02-20 11:39:22,172 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-02-20 11:39:22,172 INFO L507 AbstractCegarLoop]: Abstraction has has 67 places, 393 transitions, 4126 flow [2024-02-20 11:39:22,172 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:22,172 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:22,172 INFO L234 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] [2024-02-20 11:39:22,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:39:22,385 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-20 11:39:22,386 INFO L432 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)] === [2024-02-20 11:39:22,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1322975610, now seen corresponding path program 1 times [2024-02-20 11:39:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:22,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058936793] [2024-02-20 11:39:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058936793] [2024-02-20 11:39:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058936793] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841990628] [2024-02-20 11:39:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:22,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:22,629 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) [2024-02-20 11:39:22,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:39:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:22,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:39:22,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:22,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:39:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841990628] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:23,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:39:23,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 20 [2024-02-20 11:39:23,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375293054] [2024-02-20 11:39:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:23,195 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:39:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:23,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:39:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-02-20 11:39:23,197 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:23,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 393 transitions, 4126 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:23,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:23,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:23,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:24,731 INFO L124 PetriNetUnfolderBase]: 11571/15929 cut-off events. [2024-02-20 11:39:24,731 INFO L125 PetriNetUnfolderBase]: For 1439/1439 co-relation queries the response was YES. [2024-02-20 11:39:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96546 conditions, 15929 events. 11571/15929 cut-off events. For 1439/1439 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 83225 event pairs, 880 based on Foata normal form. 1/11550 useless extension candidates. Maximal degree in co-relation 21230. Up to 12283 conditions per place. [2024-02-20 11:39:24,803 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 532 selfloop transitions, 51 changer transitions 50/634 dead transitions. [2024-02-20 11:39:24,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 634 transitions, 7946 flow [2024-02-20 11:39:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:39:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:39:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-02-20 11:39:24,805 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-02-20 11:39:24,807 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-02-20 11:39:24,807 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 634 transitions, 7946 flow [2024-02-20 11:39:24,807 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:24,807 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:24,807 INFO L234 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] [2024-02-20 11:39:24,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-20 11:39:25,020 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:25,025 INFO L432 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)] === [2024-02-20 11:39:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash -408821822, now seen corresponding path program 2 times [2024-02-20 11:39:25,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:25,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833607784] [2024-02-20 11:39:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:25,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833607784] [2024-02-20 11:39:25,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833607784] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781067294] [2024-02-20 11:39:25,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:39:25,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:25,309 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) [2024-02-20 11:39:25,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:39:25,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:39:25,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:39:25,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:39:25,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:39:25,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:39:25,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781067294] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:25,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:39:25,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-02-20 11:39:25,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324831501] [2024-02-20 11:39:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:25,702 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:39:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:39:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:39:25,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:25,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 634 transitions, 7946 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:25,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:25,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:25,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:27,825 INFO L124 PetriNetUnfolderBase]: 14931/20607 cut-off events. [2024-02-20 11:39:27,825 INFO L125 PetriNetUnfolderBase]: For 1840/1840 co-relation queries the response was YES. [2024-02-20 11:39:27,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145407 conditions, 20607 events. 14931/20607 cut-off events. For 1840/1840 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 112594 event pairs, 990 based on Foata normal form. 1/14884 useless extension candidates. Maximal degree in co-relation 43231. Up to 13788 conditions per place. [2024-02-20 11:39:27,981 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 729 selfloop transitions, 66 changer transitions 55/851 dead transitions. [2024-02-20 11:39:27,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 851 transitions, 12361 flow [2024-02-20 11:39:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:39:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:39:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-02-20 11:39:27,985 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-02-20 11:39:27,987 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-02-20 11:39:27,988 INFO L507 AbstractCegarLoop]: Abstraction has has 87 places, 851 transitions, 12361 flow [2024-02-20 11:39:27,988 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:27,988 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:27,988 INFO L234 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] [2024-02-20 11:39:28,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:39:28,199 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:28,200 INFO L432 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)] === [2024-02-20 11:39:28,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1056633790, now seen corresponding path program 3 times [2024-02-20 11:39:28,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:28,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744914401] [2024-02-20 11:39:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:28,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:28,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744914401] [2024-02-20 11:39:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744914401] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:28,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590442169] [2024-02-20 11:39:28,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:39:28,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:28,461 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) [2024-02-20 11:39:28,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 11:39:28,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:39:28,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:39:28,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-20 11:39:28,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:39:28,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:39:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590442169] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:28,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:39:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-02-20 11:39:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789732586] [2024-02-20 11:39:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:28,806 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:39:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:39:28,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:39:28,808 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:28,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 851 transitions, 12361 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:28,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:28,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:28,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:31,334 INFO L124 PetriNetUnfolderBase]: 16423/22732 cut-off events. [2024-02-20 11:39:31,334 INFO L125 PetriNetUnfolderBase]: For 2037/2037 co-relation queries the response was YES. [2024-02-20 11:39:31,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183087 conditions, 22732 events. 16423/22732 cut-off events. For 2037/2037 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 126829 event pairs, 896 based on Foata normal form. 1/16445 useless extension candidates. Maximal degree in co-relation 56208. Up to 15909 conditions per place. [2024-02-20 11:39:31,448 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 822 selfloop transitions, 69 changer transitions 56/948 dead transitions. [2024-02-20 11:39:31,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 948 transitions, 15664 flow [2024-02-20 11:39:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:39:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:39:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-02-20 11:39:31,450 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-02-20 11:39:31,450 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2024-02-20 11:39:31,450 INFO L507 AbstractCegarLoop]: Abstraction has has 97 places, 948 transitions, 15664 flow [2024-02-20 11:39:31,451 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:31,451 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:31,451 INFO L234 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] [2024-02-20 11:39:31,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-02-20 11:39:31,656 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:31,656 INFO L432 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)] === [2024-02-20 11:39:31,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1200981362, now seen corresponding path program 4 times [2024-02-20 11:39:31,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:31,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649314590] [2024-02-20 11:39:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:31,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:31,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:31,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649314590] [2024-02-20 11:39:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649314590] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:31,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103927819] [2024-02-20 11:39:31,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:39:31,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:31,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:31,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:39:31,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 11:39:31,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:39:31,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:39:31,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:39:31,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:39:32,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:39:32,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103927819] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:32,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:39:32,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-02-20 11:39:32,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367976575] [2024-02-20 11:39:32,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:32,029 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:39:32,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:32,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:39:32,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:39:32,029 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:32,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 948 transitions, 15664 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:32,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:32,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:32,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:35,784 INFO L124 PetriNetUnfolderBase]: 23597/32659 cut-off events. [2024-02-20 11:39:35,784 INFO L125 PetriNetUnfolderBase]: For 2877/2877 co-relation queries the response was YES. [2024-02-20 11:39:35,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295668 conditions, 32659 events. 23597/32659 cut-off events. For 2877/2877 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 192291 event pairs, 1244 based on Foata normal form. 2/23493 useless extension candidates. Maximal degree in co-relation 72195. Up to 23935 conditions per place. [2024-02-20 11:39:36,133 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 1070 selfloop transitions, 116 changer transitions 116/1303 dead transitions. [2024-02-20 11:39:36,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 1303 transitions, 24134 flow [2024-02-20 11:39:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:39:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:39:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-02-20 11:39:36,143 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-02-20 11:39:36,143 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2024-02-20 11:39:36,143 INFO L507 AbstractCegarLoop]: Abstraction has has 102 places, 1303 transitions, 24134 flow [2024-02-20 11:39:36,143 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:36,143 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:36,144 INFO L234 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] [2024-02-20 11:39:36,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 11:39:36,354 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:36,356 INFO L432 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)] === [2024-02-20 11:39:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash 774848246, now seen corresponding path program 5 times [2024-02-20 11:39:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:36,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828897233] [2024-02-20 11:39:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:36,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828897233] [2024-02-20 11:39:36,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828897233] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:36,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059743248] [2024-02-20 11:39:36,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:39:36,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:36,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:39:36,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 11:39:36,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:39:36,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:39:36,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:39:36,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:36,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:39:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059743248] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:39:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-02-20 11:39:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146685170] [2024-02-20 11:39:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:37,006 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:39:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:39:37,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:39:37,007 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:37,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 1303 transitions, 24134 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:37,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:37,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:37,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:42,190 INFO L124 PetriNetUnfolderBase]: 24271/33694 cut-off events. [2024-02-20 11:39:42,191 INFO L125 PetriNetUnfolderBase]: For 3016/3016 co-relation queries the response was YES. [2024-02-20 11:39:42,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338687 conditions, 33694 events. 24271/33694 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 200142 event pairs, 1246 based on Foata normal form. 3/24329 useless extension candidates. Maximal degree in co-relation 80178. Up to 24968 conditions per place. [2024-02-20 11:39:42,406 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 1194 selfloop transitions, 64 changer transitions 119/1378 dead transitions. [2024-02-20 11:39:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 1378 transitions, 28283 flow [2024-02-20 11:39:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:39:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:39:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-02-20 11:39:42,407 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-20 11:39:42,408 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2024-02-20 11:39:42,408 INFO L507 AbstractCegarLoop]: Abstraction has has 112 places, 1378 transitions, 28283 flow [2024-02-20 11:39:42,408 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:42,408 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:42,408 INFO L234 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] [2024-02-20 11:39:42,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 11:39:42,620 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:42,621 INFO L432 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)] === [2024-02-20 11:39:42,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1749629454, now seen corresponding path program 1 times [2024-02-20 11:39:42,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:42,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39242386] [2024-02-20 11:39:42,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:42,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:42,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39242386] [2024-02-20 11:39:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39242386] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:42,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:39:42,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:39:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256341717] [2024-02-20 11:39:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:42,728 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:39:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:39:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:39:42,730 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:42,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 1378 transitions, 28283 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:42,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:42,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:42,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:47,046 INFO L124 PetriNetUnfolderBase]: 17643/24991 cut-off events. [2024-02-20 11:39:47,046 INFO L125 PetriNetUnfolderBase]: For 2350/2350 co-relation queries the response was YES. [2024-02-20 11:39:47,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276332 conditions, 24991 events. 17643/24991 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 149397 event pairs, 978 based on Foata normal form. 0/18934 useless extension candidates. Maximal degree in co-relation 52931. Up to 19715 conditions per place. [2024-02-20 11:39:47,190 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 1006 selfloop transitions, 30 changer transitions 152/1189 dead transitions. [2024-02-20 11:39:47,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 1189 transitions, 26780 flow [2024-02-20 11:39:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:39:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:39:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-02-20 11:39:47,192 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-02-20 11:39:47,192 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-02-20 11:39:47,192 INFO L507 AbstractCegarLoop]: Abstraction has has 116 places, 1189 transitions, 26780 flow [2024-02-20 11:39:47,192 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:47,192 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:47,192 INFO L234 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] [2024-02-20 11:39:47,193 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-20 11:39:47,193 INFO L432 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)] === [2024-02-20 11:39:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1632007976, now seen corresponding path program 1 times [2024-02-20 11:39:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455885326] [2024-02-20 11:39:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:47,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:47,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455885326] [2024-02-20 11:39:47,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455885326] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:47,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:39:47,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:39:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714481130] [2024-02-20 11:39:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:47,247 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:39:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:39:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:39:47,248 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:47,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 1189 transitions, 26780 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:47,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:47,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:50,256 INFO L124 PetriNetUnfolderBase]: 12547/18423 cut-off events. [2024-02-20 11:39:50,257 INFO L125 PetriNetUnfolderBase]: For 1899/1899 co-relation queries the response was YES. [2024-02-20 11:39:50,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222366 conditions, 18423 events. 12547/18423 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 113484 event pairs, 354 based on Foata normal form. 0/14990 useless extension candidates. Maximal degree in co-relation 41122. Up to 15118 conditions per place. [2024-02-20 11:39:50,365 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 641 selfloop transitions, 28 changer transitions 484/1154 dead transitions. [2024-02-20 11:39:50,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 1154 transitions, 28346 flow [2024-02-20 11:39:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:39:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:39:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-02-20 11:39:50,367 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-20 11:39:50,367 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 81 predicate places. [2024-02-20 11:39:50,367 INFO L507 AbstractCegarLoop]: Abstraction has has 120 places, 1154 transitions, 28346 flow [2024-02-20 11:39:50,368 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:50,380 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:50,380 INFO L234 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] [2024-02-20 11:39:50,380 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-20 11:39:50,381 INFO L432 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)] === [2024-02-20 11:39:50,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1242329272, now seen corresponding path program 1 times [2024-02-20 11:39:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547193440] [2024-02-20 11:39:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:39:50,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:50,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547193440] [2024-02-20 11:39:50,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547193440] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168821811] [2024-02-20 11:39:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:50,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:39:50,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:39:50,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:39:50,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 11:39:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:50,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 11:39:50,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:39:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:50,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:39:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:39:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168821811] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:39:50,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:39:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 12 [2024-02-20 11:39:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860791378] [2024-02-20 11:39:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:50,735 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:39:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:50,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:39:50,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:39:50,736 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:50,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 1154 transitions, 28346 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:50,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:50,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:50,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:54,282 INFO L124 PetriNetUnfolderBase]: 13528/19838 cut-off events. [2024-02-20 11:39:54,282 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-02-20 11:39:54,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259255 conditions, 19838 events. 13528/19838 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 122145 event pairs, 488 based on Foata normal form. 0/16121 useless extension candidates. Maximal degree in co-relation 61956. Up to 16502 conditions per place. [2024-02-20 11:39:54,407 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 959 selfloop transitions, 75 changer transitions 594/1629 dead transitions. [2024-02-20 11:39:54,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1629 transitions, 43125 flow [2024-02-20 11:39:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:39:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:39:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-02-20 11:39:54,409 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-02-20 11:39:54,409 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 89 predicate places. [2024-02-20 11:39:54,409 INFO L507 AbstractCegarLoop]: Abstraction has has 128 places, 1629 transitions, 43125 flow [2024-02-20 11:39:54,409 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:39:54,409 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:54,410 INFO L234 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] [2024-02-20 11:39:54,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 11:39:54,620 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-20 11:39:54,621 INFO L432 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)] === [2024-02-20 11:39:54,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1981452814, now seen corresponding path program 1 times [2024-02-20 11:39:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194053409] [2024-02-20 11:39:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:39:54,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:54,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194053409] [2024-02-20 11:39:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194053409] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:54,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:39:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:39:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707033289] [2024-02-20 11:39:54,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:54,696 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:39:54,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:54,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:39:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:39:54,697 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:54,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 1629 transitions, 43125 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) [2024-02-20 11:39:54,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:54,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:54,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:39:57,800 INFO L124 PetriNetUnfolderBase]: 9896/14792 cut-off events. [2024-02-20 11:39:57,800 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2024-02-20 11:39:57,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208176 conditions, 14792 events. 9896/14792 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 90543 event pairs, 488 based on Foata normal form. 0/12495 useless extension candidates. Maximal degree in co-relation 66702. Up to 12749 conditions per place. [2024-02-20 11:39:57,891 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 379 selfloop transitions, 4 changer transitions 665/1049 dead transitions. [2024-02-20 11:39:57,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1049 transitions, 29919 flow [2024-02-20 11:39:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:39:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:39:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-02-20 11:39:57,892 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-20 11:39:57,893 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-02-20 11:39:57,893 INFO L507 AbstractCegarLoop]: Abstraction has has 132 places, 1049 transitions, 29919 flow [2024-02-20 11:39:57,893 INFO L508 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) [2024-02-20 11:39:57,893 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:39:57,893 INFO L234 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] [2024-02-20 11:39:57,893 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-20 11:39:57,893 INFO L432 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)] === [2024-02-20 11:39:57,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:39:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash -907659536, now seen corresponding path program 1 times [2024-02-20 11:39:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:39:57,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478809614] [2024-02-20 11:39:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:39:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:39:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:39:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:39:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:39:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478809614] [2024-02-20 11:39:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478809614] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:39:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:39:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:39:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515391986] [2024-02-20 11:39:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:39:57,955 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:39:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:39:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:39:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:39:57,956 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:39:57,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 1049 transitions, 29919 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) [2024-02-20 11:39:57,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:39:57,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:39:57,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:40:00,487 INFO L124 PetriNetUnfolderBase]: 9155/13788 cut-off events. [2024-02-20 11:40:00,487 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2024-02-20 11:40:00,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207855 conditions, 13788 events. 9155/13788 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 84572 event pairs, 416 based on Foata normal form. 0/11803 useless extension candidates. Maximal degree in co-relation 71448. Up to 11787 conditions per place. [2024-02-20 11:40:00,564 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 203 selfloop transitions, 2 changer transitions 746/952 dead transitions. [2024-02-20 11:40:00,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 952 transitions, 29069 flow [2024-02-20 11:40:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:40:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:40:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-02-20 11:40:00,565 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-02-20 11:40:00,565 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 97 predicate places. [2024-02-20 11:40:00,565 INFO L507 AbstractCegarLoop]: Abstraction has has 136 places, 952 transitions, 29069 flow [2024-02-20 11:40:00,566 INFO L508 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) [2024-02-20 11:40:00,566 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:40:00,566 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:40:00,566 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-20 11:40:00,566 INFO L432 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)] === [2024-02-20 11:40:00,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:40:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 357030262, now seen corresponding path program 1 times [2024-02-20 11:40:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:40:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436750057] [2024-02-20 11:40:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:40:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:40:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:40:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:40:00,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:40:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436750057] [2024-02-20 11:40:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436750057] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:40:00,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:40:00,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:40:00,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79862120] [2024-02-20 11:40:00,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:40:00,664 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:40:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:40:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:40:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:40:00,665 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:40:00,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 952 transitions, 29069 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:40:00,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:40:00,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:40:00,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:40:03,119 INFO L124 PetriNetUnfolderBase]: 9155/13784 cut-off events. [2024-02-20 11:40:03,119 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2024-02-20 11:40:03,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221605 conditions, 13784 events. 9155/13784 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 84533 event pairs, 416 based on Foata normal form. 2/11801 useless extension candidates. Maximal degree in co-relation 76194. Up to 12039 conditions per place. [2024-02-20 11:40:03,196 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 225 selfloop transitions, 15 changer transitions 798/1039 dead transitions. [2024-02-20 11:40:03,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 1039 transitions, 33782 flow [2024-02-20 11:40:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:40:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:40:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-02-20 11:40:03,197 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-02-20 11:40:03,197 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2024-02-20 11:40:03,198 INFO L507 AbstractCegarLoop]: Abstraction has has 139 places, 1039 transitions, 33782 flow [2024-02-20 11:40:03,198 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:40:03,198 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:40:03,198 INFO L234 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] [2024-02-20 11:40:03,198 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-20 11:40:03,198 INFO L432 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)] === [2024-02-20 11:40:03,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:40:03,199 INFO L85 PathProgramCache]: Analyzing trace with hash -37571594, now seen corresponding path program 1 times [2024-02-20 11:40:03,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:40:03,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833763239] [2024-02-20 11:40:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:40:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:40:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:40:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:40:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:40:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833763239] [2024-02-20 11:40:03,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833763239] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:40:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104549531] [2024-02-20 11:40:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:40:03,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:40:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:40:03,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:40:03,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 11:40:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:40:03,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 11:40:03,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:40:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 11:40:03,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:40:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:40:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104549531] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:40:04,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:40:04,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 10] total 24 [2024-02-20 11:40:04,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850083016] [2024-02-20 11:40:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:40:04,067 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:40:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:40:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:40:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-02-20 11:40:04,068 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:40:04,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 1039 transitions, 33782 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:40:04,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:40:04,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:40:04,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:40:08,677 INFO L124 PetriNetUnfolderBase]: 14489/21302 cut-off events. [2024-02-20 11:40:08,677 INFO L125 PetriNetUnfolderBase]: For 2178/2178 co-relation queries the response was YES. [2024-02-20 11:40:08,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363618 conditions, 21302 events. 14489/21302 cut-off events. For 2178/2178 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 132986 event pairs, 622 based on Foata normal form. 1/17521 useless extension candidates. Maximal degree in co-relation 94284. Up to 19164 conditions per place. [2024-02-20 11:40:08,809 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 508 selfloop transitions, 32 changer transitions 970/1511 dead transitions. [2024-02-20 11:40:08,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1511 transitions, 52113 flow [2024-02-20 11:40:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:40:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:40:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-02-20 11:40:08,813 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-02-20 11:40:08,814 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 111 predicate places. [2024-02-20 11:40:08,814 INFO L507 AbstractCegarLoop]: Abstraction has has 150 places, 1511 transitions, 52113 flow [2024-02-20 11:40:08,814 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:40:08,814 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:40:08,814 INFO L234 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] [2024-02-20 11:40:08,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 11:40:09,025 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-20 11:40:09,025 INFO L432 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)] === [2024-02-20 11:40:09,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:40:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash -142040894, now seen corresponding path program 2 times [2024-02-20 11:40:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:40:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861661400] [2024-02-20 11:40:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:40:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:40:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:40:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:40:09,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:40:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861661400] [2024-02-20 11:40:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861661400] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:40:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815506779] [2024-02-20 11:40:09,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:40:09,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:40:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:40:09,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 11:40:09,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 11:40:09,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:40:09,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:40:09,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-20 11:40:09,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:40:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:40:09,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:40:09,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815506779] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:40:09,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:40:09,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-02-20 11:40:09,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418472878] [2024-02-20 11:40:09,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:40:09,578 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:40:09,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:40:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:40:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:40:09,580 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-20 11:40:09,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 1511 transitions, 52113 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:40:09,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:40:09,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-20 11:40:09,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:40:15,831 INFO L124 PetriNetUnfolderBase]: 16252/23843 cut-off events. [2024-02-20 11:40:15,832 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-02-20 11:40:15,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430740 conditions, 23843 events. 16252/23843 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 150751 event pairs, 614 based on Foata normal form. 1/19514 useless extension candidates. Maximal degree in co-relation 123026. Up to 21704 conditions per place. [2024-02-20 11:40:16,029 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 575 selfloop transitions, 42 changer transitions 1041/1659 dead transitions. [2024-02-20 11:40:16,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1659 transitions, 60518 flow [2024-02-20 11:40:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:40:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:40:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-02-20 11:40:16,030 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4595238095238095 [2024-02-20 11:40:16,030 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2024-02-20 11:40:16,031 INFO L507 AbstractCegarLoop]: Abstraction has has 159 places, 1659 transitions, 60518 flow [2024-02-20 11:40:16,046 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:40:16,046 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:40:16,047 INFO L234 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] [2024-02-20 11:40:16,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 11:40:16,257 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-20 11:40:16,257 INFO L432 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)] === [2024-02-20 11:40:16,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:40:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1016080962, now seen corresponding path program 3 times [2024-02-20 11:40:16,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:40:16,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788022910] [2024-02-20 11:40:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:40:16,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:40:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat