./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:27:09,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:27:09,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:27:09,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:27:09,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:27:09,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:27:09,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:27:09,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:27:09,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:27:09,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:27:09,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:27:09,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:27:09,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:27:09,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:27:09,580 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:27:09,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:27:09,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:27:09,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:27:09,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:27:09,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:27:09,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:27:09,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:27:09,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:27:09,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:27:09,583 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:27:09,583 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:27:09,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:27:09,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:27:09,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:27:09,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:27:09,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:27:09,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:27:09,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:27:09,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:27:09,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:27:09,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:27:09,587 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:27:09,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:27:09,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:27:09,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:27:09,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:27:09,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:27:09,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:27:09,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-01-27 15:27:09,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:27:09,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:27:09,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:27:09,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:27:09,884 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:27:09,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2024-01-27 15:27:11,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:27:11,297 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:27:11,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2024-01-27 15:27:11,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ac07803/cd80950dee6940bebe8266bc58110379/FLAGf39db8c21 [2024-01-27 15:27:11,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ac07803/cd80950dee6940bebe8266bc58110379 [2024-01-27 15:27:11,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:27:11,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:27:11,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:27:11,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:27:11,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:27:11,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608f6c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11, skipping insertion in model container [2024-01-27 15:27:11,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,366 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:27:11,553 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-01-27 15:27:11,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:27:11,577 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:27:11,613 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-01-27 15:27:11,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:27:11,631 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:27:11,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11 WrapperNode [2024-01-27 15:27:11,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:27:11,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:27:11,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:27:11,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:27:11,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,688 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 606 [2024-01-27 15:27:11,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:27:11,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:27:11,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:27:11,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:27:11,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,730 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 27, 2, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2024-01-27 15:27:11,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:27:11,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:27:11,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:27:11,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:27:11,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (1/1) ... [2024-01-27 15:27:11,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:27:11,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:27:11,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:27:11,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:27:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:27:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:27:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:27:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:27:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:27:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:27:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:27:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:27:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:27:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:27:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:27:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:27:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:27:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:27:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:27:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:27:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:27:11,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:27:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:27:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:27:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:27:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:27:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:27:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:27:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:27:11,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:27:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:27:11,886 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:27:12,045 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:27:12,047 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:27:12,779 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:27:12,779 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:27:13,497 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:27:13,497 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 15:27:13,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:27:13 BoogieIcfgContainer [2024-01-27 15:27:13,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:27:13,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:27:13,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:27:13,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:27:13,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:27:11" (1/3) ... [2024-01-27 15:27:13,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750a9450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:27:13, skipping insertion in model container [2024-01-27 15:27:13,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:27:11" (2/3) ... [2024-01-27 15:27:13,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750a9450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:27:13, skipping insertion in model container [2024-01-27 15:27:13,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:27:13" (3/3) ... [2024-01-27 15:27:13,505 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-01-27 15:27:13,513 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:27:13,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:27:13,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:27:13,523 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:27:13,622 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:27:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:27:13,683 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-27 15:27:13,684 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:27:13,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-27 15:27:13,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-27 15:27:13,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-27 15:27:13,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:27:13,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c2ac131, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:27:13,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:27:13,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:27:13,723 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-27 15:27:13,723 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:27:13,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:13,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:13,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:13,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757406, now seen corresponding path program 1 times [2024-01-27 15:27:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031888469] [2024-01-27 15:27:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:27:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031888469] [2024-01-27 15:27:14,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031888469] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:14,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:27:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893563147] [2024-01-27 15:27:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:14,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:27:14,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:27:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:27:14,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:14,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:14,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:14,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:14,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:15,175 INFO L124 PetriNetUnfolderBase]: 1664/2361 cut-off events. [2024-01-27 15:27:15,175 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-27 15:27:15,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2361 events. 1664/2361 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9842 event pairs, 1125 based on Foata normal form. 268/2082 useless extension candidates. Maximal degree in co-relation 4159. Up to 2271 conditions per place. [2024-01-27 15:27:15,193 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-01-27 15:27:15,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 198 flow [2024-01-27 15:27:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:27:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:27:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-27 15:27:15,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-01-27 15:27:15,207 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 3 states and 70 transitions. [2024-01-27 15:27:15,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 198 flow [2024-01-27 15:27:15,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:27:15,220 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 126 flow [2024-01-27 15:27:15,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2024-01-27 15:27:15,226 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-01-27 15:27:15,226 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 126 flow [2024-01-27 15:27:15,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:15,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:15,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:15,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:27:15,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:15,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1741264555, now seen corresponding path program 1 times [2024-01-27 15:27:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180377196] [2024-01-27 15:27:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:27:15,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:15,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180377196] [2024-01-27 15:27:15,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180377196] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:27:15,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892149936] [2024-01-27 15:27:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:15,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:15,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:27:15,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:27:15,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:27:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:15,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:27:15,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:27:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:27:15,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:27:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:27:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892149936] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:27:15,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:27:15,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-01-27 15:27:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872406066] [2024-01-27 15:27:15,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:27:15,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:27:15,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:27:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:27:15,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:15,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:15,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:15,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:15,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:16,355 INFO L124 PetriNetUnfolderBase]: 1664/2370 cut-off events. [2024-01-27 15:27:16,355 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-27 15:27:16,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2370 events. 1664/2370 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9852 event pairs, 1125 based on Foata normal form. 6/1831 useless extension candidates. Maximal degree in co-relation 4672. Up to 2271 conditions per place. [2024-01-27 15:27:16,366 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 37 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2024-01-27 15:27:16,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 266 flow [2024-01-27 15:27:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:27:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:27:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-01-27 15:27:16,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366013071895425 [2024-01-27 15:27:16,368 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 126 flow. Second operand 6 states and 103 transitions. [2024-01-27 15:27:16,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 266 flow [2024-01-27 15:27:16,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:27:16,371 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 216 flow [2024-01-27 15:27:16,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2024-01-27 15:27:16,372 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-01-27 15:27:16,372 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 216 flow [2024-01-27 15:27:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:16,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:16,373 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:16,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 15:27:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:16,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:16,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash -397893168, now seen corresponding path program 2 times [2024-01-27 15:27:16,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:16,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256052452] [2024-01-27 15:27:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:27:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256052452] [2024-01-27 15:27:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256052452] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:27:16,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794112864] [2024-01-27 15:27:16,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:27:16,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:27:16,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:27:16,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:27:17,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:27:17,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:27:17,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:27:17,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:27:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:27:19,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:27:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794112864] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:19,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:27:19,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-01-27 15:27:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692797610] [2024-01-27 15:27:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:19,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:27:19,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:19,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:19,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:19,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:19,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:20,479 INFO L124 PetriNetUnfolderBase]: 2392/3465 cut-off events. [2024-01-27 15:27:20,480 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-27 15:27:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3465 events. 2392/3465 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16292 event pairs, 1125 based on Foata normal form. 1/2726 useless extension candidates. Maximal degree in co-relation 6885. Up to 2197 conditions per place. [2024-01-27 15:27:20,496 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 93 selfloop transitions, 2 changer transitions 10/109 dead transitions. [2024-01-27 15:27:20,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 109 transitions, 544 flow [2024-01-27 15:27:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-27 15:27:20,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-01-27 15:27:20,501 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 216 flow. Second operand 5 states and 129 transitions. [2024-01-27 15:27:20,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 109 transitions, 544 flow [2024-01-27 15:27:20,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-27 15:27:20,508 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 207 flow [2024-01-27 15:27:20,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2024-01-27 15:27:20,509 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-01-27 15:27:20,509 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 207 flow [2024-01-27 15:27:20,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:20,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:20,510 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:20,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:27:20,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-27 15:27:20,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:20,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1787279914, now seen corresponding path program 3 times [2024-01-27 15:27:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833662158] [2024-01-27 15:27:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:27:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:20,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833662158] [2024-01-27 15:27:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833662158] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:27:20,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674339541] [2024-01-27 15:27:20,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:27:20,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:20,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:27:20,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:27:20,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:27:21,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:27:21,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:27:21,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 15:27:21,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:27:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-27 15:27:22,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:27:22,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674339541] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:22,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:27:22,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-01-27 15:27:22,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655647049] [2024-01-27 15:27:22,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:22,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:22,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:27:22,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:22,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:22,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:22,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:22,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:23,631 INFO L124 PetriNetUnfolderBase]: 3066/4543 cut-off events. [2024-01-27 15:27:23,631 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2024-01-27 15:27:23,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 4543 events. 3066/4543 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23003 event pairs, 1655 based on Foata normal form. 1/4078 useless extension candidates. Maximal degree in co-relation 9559. Up to 2965 conditions per place. [2024-01-27 15:27:23,654 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 89 selfloop transitions, 3 changer transitions 10/106 dead transitions. [2024-01-27 15:27:23,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 531 flow [2024-01-27 15:27:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-01-27 15:27:23,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-01-27 15:27:23,656 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 207 flow. Second operand 5 states and 125 transitions. [2024-01-27 15:27:23,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 531 flow [2024-01-27 15:27:23,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 106 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:27:23,661 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 224 flow [2024-01-27 15:27:23,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-01-27 15:27:23,662 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-01-27 15:27:23,662 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 224 flow [2024-01-27 15:27:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:23,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:23,663 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:23,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:27:23,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:23,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:23,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1452446996, now seen corresponding path program 4 times [2024-01-27 15:27:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782216291] [2024-01-27 15:27:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:23,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:27:24,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782216291] [2024-01-27 15:27:24,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782216291] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:27:24,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681490266] [2024-01-27 15:27:24,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:27:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:24,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:27:24,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:27:24,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:27:24,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:27:24,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:27:24,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:27:24,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:27:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:27:24,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:27:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-27 15:27:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681490266] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:27:24,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:27:24,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-27 15:27:24,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797435066] [2024-01-27 15:27:24,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:27:24,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 15:27:24,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:24,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 15:27:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-01-27 15:27:24,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:24,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:24,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:24,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:24,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:25,333 INFO L124 PetriNetUnfolderBase]: 3032/4523 cut-off events. [2024-01-27 15:27:25,334 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2024-01-27 15:27:25,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 4523 events. 3032/4523 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22857 event pairs, 2407 based on Foata normal form. 1/4058 useless extension candidates. Maximal degree in co-relation 9939. Up to 4383 conditions per place. [2024-01-27 15:27:25,360 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 39 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-01-27 15:27:25,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 356 flow [2024-01-27 15:27:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:27:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:27:25,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-01-27 15:27:25,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29971988795518206 [2024-01-27 15:27:25,362 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 224 flow. Second operand 7 states and 107 transitions. [2024-01-27 15:27:25,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 356 flow [2024-01-27 15:27:25,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 350 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:27:25,368 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 286 flow [2024-01-27 15:27:25,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-01-27 15:27:25,370 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-01-27 15:27:25,370 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 286 flow [2024-01-27 15:27:25,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:25,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:25,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:25,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:27:25,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:27:25,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:25,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -405483631, now seen corresponding path program 5 times [2024-01-27 15:27:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786395549] [2024-01-27 15:27:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:26,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:26,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786395549] [2024-01-27 15:27:26,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786395549] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:26,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:26,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569811214] [2024-01-27 15:27:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:26,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:26,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:26,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:26,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:26,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:26,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:28,093 INFO L124 PetriNetUnfolderBase]: 5202/7884 cut-off events. [2024-01-27 15:27:28,094 INFO L125 PetriNetUnfolderBase]: For 1945/1945 co-relation queries the response was YES. [2024-01-27 15:27:28,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16798 conditions, 7884 events. 5202/7884 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 45715 event pairs, 1931 based on Foata normal form. 1/6970 useless extension candidates. Maximal degree in co-relation 16685. Up to 3546 conditions per place. [2024-01-27 15:27:28,136 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 112 selfloop transitions, 17 changer transitions 1/134 dead transitions. [2024-01-27 15:27:28,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 736 flow [2024-01-27 15:27:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-01-27 15:27:28,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-01-27 15:27:28,138 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 286 flow. Second operand 5 states and 147 transitions. [2024-01-27 15:27:28,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 736 flow [2024-01-27 15:27:28,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 134 transitions, 700 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-27 15:27:28,143 INFO L231 Difference]: Finished difference. Result has 67 places, 78 transitions, 404 flow [2024-01-27 15:27:28,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=67, PETRI_TRANSITIONS=78} [2024-01-27 15:27:28,144 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-01-27 15:27:28,144 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 78 transitions, 404 flow [2024-01-27 15:27:28,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:28,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:28,144 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:28,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:27:28,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:28,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1166366095, now seen corresponding path program 6 times [2024-01-27 15:27:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233411159] [2024-01-27 15:27:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:28,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233411159] [2024-01-27 15:27:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233411159] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:28,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058484064] [2024-01-27 15:27:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:28,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:28,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:28,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:28,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 78 transitions, 404 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:28,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:28,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:28,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:30,664 INFO L124 PetriNetUnfolderBase]: 5512/8291 cut-off events. [2024-01-27 15:27:30,664 INFO L125 PetriNetUnfolderBase]: For 7083/7107 co-relation queries the response was YES. [2024-01-27 15:27:30,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21191 conditions, 8291 events. 5512/8291 cut-off events. For 7083/7107 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48479 event pairs, 2727 based on Foata normal form. 25/8058 useless extension candidates. Maximal degree in co-relation 21092. Up to 4636 conditions per place. [2024-01-27 15:27:30,708 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 124 selfloop transitions, 20 changer transitions 2/150 dead transitions. [2024-01-27 15:27:30,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 150 transitions, 950 flow [2024-01-27 15:27:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-01-27 15:27:30,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-01-27 15:27:30,710 INFO L175 Difference]: Start difference. First operand has 67 places, 78 transitions, 404 flow. Second operand 5 states and 141 transitions. [2024-01-27 15:27:30,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 150 transitions, 950 flow [2024-01-27 15:27:30,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 150 transitions, 948 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 15:27:30,731 INFO L231 Difference]: Finished difference. Result has 74 places, 90 transitions, 570 flow [2024-01-27 15:27:30,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=570, PETRI_PLACES=74, PETRI_TRANSITIONS=90} [2024-01-27 15:27:30,732 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-01-27 15:27:30,732 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 90 transitions, 570 flow [2024-01-27 15:27:30,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:30,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:30,733 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:30,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:27:30,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:30,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash -376044409, now seen corresponding path program 7 times [2024-01-27 15:27:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887093007] [2024-01-27 15:27:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:31,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:31,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887093007] [2024-01-27 15:27:31,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887093007] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:31,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:31,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:31,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013168915] [2024-01-27 15:27:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:31,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:31,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:31,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:31,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:31,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 90 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:31,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:31,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:31,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:33,544 INFO L124 PetriNetUnfolderBase]: 7722/11611 cut-off events. [2024-01-27 15:27:33,544 INFO L125 PetriNetUnfolderBase]: For 19611/19621 co-relation queries the response was YES. [2024-01-27 15:27:33,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32550 conditions, 11611 events. 7722/11611 cut-off events. For 19611/19621 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 72270 event pairs, 2471 based on Foata normal form. 1/11172 useless extension candidates. Maximal degree in co-relation 32447. Up to 5465 conditions per place. [2024-01-27 15:27:33,619 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 132 selfloop transitions, 32 changer transitions 4/172 dead transitions. [2024-01-27 15:27:33,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 172 transitions, 1271 flow [2024-01-27 15:27:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-01-27 15:27:33,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2024-01-27 15:27:33,621 INFO L175 Difference]: Start difference. First operand has 74 places, 90 transitions, 570 flow. Second operand 5 states and 145 transitions. [2024-01-27 15:27:33,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 172 transitions, 1271 flow [2024-01-27 15:27:33,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 172 transitions, 1251 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 15:27:33,664 INFO L231 Difference]: Finished difference. Result has 81 places, 111 transitions, 870 flow [2024-01-27 15:27:33,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=81, PETRI_TRANSITIONS=111} [2024-01-27 15:27:33,665 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-01-27 15:27:33,665 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 111 transitions, 870 flow [2024-01-27 15:27:33,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:33,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:33,666 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:33,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:27:33,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:33,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash -668652335, now seen corresponding path program 8 times [2024-01-27 15:27:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662859663] [2024-01-27 15:27:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662859663] [2024-01-27 15:27:34,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662859663] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:34,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956139724] [2024-01-27 15:27:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:34,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:34,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:34,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 111 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:34,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:34,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:34,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:37,047 INFO L124 PetriNetUnfolderBase]: 9024/13588 cut-off events. [2024-01-27 15:27:37,047 INFO L125 PetriNetUnfolderBase]: For 33375/33401 co-relation queries the response was YES. [2024-01-27 15:27:37,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41972 conditions, 13588 events. 9024/13588 cut-off events. For 33375/33401 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 86475 event pairs, 2073 based on Foata normal form. 11/13497 useless extension candidates. Maximal degree in co-relation 41866. Up to 4760 conditions per place. [2024-01-27 15:27:37,181 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 156 selfloop transitions, 62 changer transitions 1/223 dead transitions. [2024-01-27 15:27:37,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 223 transitions, 1838 flow [2024-01-27 15:27:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:27:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:27:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-01-27 15:27:37,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-01-27 15:27:37,182 INFO L175 Difference]: Start difference. First operand has 81 places, 111 transitions, 870 flow. Second operand 6 states and 194 transitions. [2024-01-27 15:27:37,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 223 transitions, 1838 flow [2024-01-27 15:27:37,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 223 transitions, 1798 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-01-27 15:27:37,315 INFO L231 Difference]: Finished difference. Result has 90 places, 141 transitions, 1381 flow [2024-01-27 15:27:37,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1381, PETRI_PLACES=90, PETRI_TRANSITIONS=141} [2024-01-27 15:27:37,316 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-01-27 15:27:37,316 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 141 transitions, 1381 flow [2024-01-27 15:27:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:37,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:37,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:37,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:27:37,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:37,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1135293362, now seen corresponding path program 1 times [2024-01-27 15:27:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:37,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142744890] [2024-01-27 15:27:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:37,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:37,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142744890] [2024-01-27 15:27:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142744890] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:37,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:37,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:37,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092143091] [2024-01-27 15:27:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:37,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:37,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:37,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 141 transitions, 1381 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:37,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:37,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:37,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:40,123 INFO L124 PetriNetUnfolderBase]: 9472/14381 cut-off events. [2024-01-27 15:27:40,123 INFO L125 PetriNetUnfolderBase]: For 50924/50946 co-relation queries the response was YES. [2024-01-27 15:27:40,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48849 conditions, 14381 events. 9472/14381 cut-off events. For 50924/50946 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 94000 event pairs, 4671 based on Foata normal form. 29/14366 useless extension candidates. Maximal degree in co-relation 48738. Up to 9258 conditions per place. [2024-01-27 15:27:40,211 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 181 selfloop transitions, 12 changer transitions 16/213 dead transitions. [2024-01-27 15:27:40,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 213 transitions, 2131 flow [2024-01-27 15:27:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-27 15:27:40,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-27 15:27:40,213 INFO L175 Difference]: Start difference. First operand has 90 places, 141 transitions, 1381 flow. Second operand 5 states and 135 transitions. [2024-01-27 15:27:40,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 213 transitions, 2131 flow [2024-01-27 15:27:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 213 transitions, 2085 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-01-27 15:27:40,417 INFO L231 Difference]: Finished difference. Result has 97 places, 144 transitions, 1416 flow [2024-01-27 15:27:40,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1416, PETRI_PLACES=97, PETRI_TRANSITIONS=144} [2024-01-27 15:27:40,418 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-01-27 15:27:40,419 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 144 transitions, 1416 flow [2024-01-27 15:27:40,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:40,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:40,419 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:40,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:27:40,420 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 786246588, now seen corresponding path program 1 times [2024-01-27 15:27:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:40,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745605152] [2024-01-27 15:27:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:40,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:40,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:40,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745605152] [2024-01-27 15:27:40,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745605152] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:40,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:40,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:40,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061742500] [2024-01-27 15:27:40,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:40,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:40,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:40,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:40,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 144 transitions, 1416 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:40,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:40,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:40,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:43,605 INFO L124 PetriNetUnfolderBase]: 9952/15230 cut-off events. [2024-01-27 15:27:43,605 INFO L125 PetriNetUnfolderBase]: For 52582/52606 co-relation queries the response was YES. [2024-01-27 15:27:43,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50891 conditions, 15230 events. 9952/15230 cut-off events. For 52582/52606 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 101940 event pairs, 4349 based on Foata normal form. 69/15263 useless extension candidates. Maximal degree in co-relation 50776. Up to 6500 conditions per place. [2024-01-27 15:27:43,694 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 164 selfloop transitions, 13 changer transitions 38/219 dead transitions. [2024-01-27 15:27:43,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 219 transitions, 2229 flow [2024-01-27 15:27:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-01-27 15:27:43,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-01-27 15:27:43,696 INFO L175 Difference]: Start difference. First operand has 97 places, 144 transitions, 1416 flow. Second operand 5 states and 141 transitions. [2024-01-27 15:27:43,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 219 transitions, 2229 flow [2024-01-27 15:27:43,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 219 transitions, 2215 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 15:27:43,880 INFO L231 Difference]: Finished difference. Result has 101 places, 133 transitions, 1325 flow [2024-01-27 15:27:43,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1325, PETRI_PLACES=101, PETRI_TRANSITIONS=133} [2024-01-27 15:27:43,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-01-27 15:27:43,881 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 133 transitions, 1325 flow [2024-01-27 15:27:43,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:43,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:43,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:43,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:27:43,881 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:43,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -306278708, now seen corresponding path program 2 times [2024-01-27 15:27:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:43,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100739644] [2024-01-27 15:27:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:43,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100739644] [2024-01-27 15:27:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100739644] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008126158] [2024-01-27 15:27:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:44,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:44,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 1325 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:44,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:44,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:44,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:46,367 INFO L124 PetriNetUnfolderBase]: 9456/14518 cut-off events. [2024-01-27 15:27:46,368 INFO L125 PetriNetUnfolderBase]: For 52206/52228 co-relation queries the response was YES. [2024-01-27 15:27:46,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48692 conditions, 14518 events. 9456/14518 cut-off events. For 52206/52228 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 97230 event pairs, 4183 based on Foata normal form. 7/14473 useless extension candidates. Maximal degree in co-relation 48575. Up to 8464 conditions per place. [2024-01-27 15:27:46,460 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 168 selfloop transitions, 48 changer transitions 5/225 dead transitions. [2024-01-27 15:27:46,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 225 transitions, 2253 flow [2024-01-27 15:27:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:27:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:27:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-27 15:27:46,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-01-27 15:27:46,462 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 1325 flow. Second operand 6 states and 164 transitions. [2024-01-27 15:27:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 225 transitions, 2253 flow [2024-01-27 15:27:46,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 225 transitions, 2231 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-27 15:27:46,839 INFO L231 Difference]: Finished difference. Result has 107 places, 152 transitions, 1725 flow [2024-01-27 15:27:46,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1725, PETRI_PLACES=107, PETRI_TRANSITIONS=152} [2024-01-27 15:27:46,840 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2024-01-27 15:27:46,840 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 152 transitions, 1725 flow [2024-01-27 15:27:46,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:46,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:46,840 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:46,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:27:46,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:46,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1200357000, now seen corresponding path program 1 times [2024-01-27 15:27:46,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:46,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338357856] [2024-01-27 15:27:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:46,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:46,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338357856] [2024-01-27 15:27:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338357856] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:27:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980391347] [2024-01-27 15:27:46,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:46,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:27:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:27:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:27:46,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:46,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 152 transitions, 1725 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:46,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:46,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:46,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:49,418 INFO L124 PetriNetUnfolderBase]: 10282/15968 cut-off events. [2024-01-27 15:27:49,418 INFO L125 PetriNetUnfolderBase]: For 70132/70132 co-relation queries the response was YES. [2024-01-27 15:27:49,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56120 conditions, 15968 events. 10282/15968 cut-off events. For 70132/70132 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 109908 event pairs, 3533 based on Foata normal form. 7/15971 useless extension candidates. Maximal degree in co-relation 56000. Up to 10770 conditions per place. [2024-01-27 15:27:49,505 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 158 selfloop transitions, 12 changer transitions 43/217 dead transitions. [2024-01-27 15:27:49,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 217 transitions, 2701 flow [2024-01-27 15:27:49,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:27:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:27:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-01-27 15:27:49,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2024-01-27 15:27:49,506 INFO L175 Difference]: Start difference. First operand has 107 places, 152 transitions, 1725 flow. Second operand 4 states and 113 transitions. [2024-01-27 15:27:49,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 217 transitions, 2701 flow [2024-01-27 15:27:49,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 217 transitions, 2636 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-01-27 15:27:49,824 INFO L231 Difference]: Finished difference. Result has 110 places, 149 transitions, 1698 flow [2024-01-27 15:27:49,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1698, PETRI_PLACES=110, PETRI_TRANSITIONS=149} [2024-01-27 15:27:49,825 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2024-01-27 15:27:49,825 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 149 transitions, 1698 flow [2024-01-27 15:27:49,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:49,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:49,826 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:27:49,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:49,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 798849706, now seen corresponding path program 2 times [2024-01-27 15:27:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:49,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467241076] [2024-01-27 15:27:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:49,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:49,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467241076] [2024-01-27 15:27:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467241076] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:49,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:49,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:27:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243749165] [2024-01-27 15:27:49,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:27:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:27:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:27:49,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:49,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 149 transitions, 1698 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:49,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:49,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:49,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:52,279 INFO L124 PetriNetUnfolderBase]: 8532/13286 cut-off events. [2024-01-27 15:27:52,280 INFO L125 PetriNetUnfolderBase]: For 56920/56952 co-relation queries the response was YES. [2024-01-27 15:27:52,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45534 conditions, 13286 events. 8532/13286 cut-off events. For 56920/56952 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 88395 event pairs, 4677 based on Foata normal form. 6/12734 useless extension candidates. Maximal degree in co-relation 45413. Up to 9080 conditions per place. [2024-01-27 15:27:52,374 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 140 selfloop transitions, 4 changer transitions 41/189 dead transitions. [2024-01-27 15:27:52,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 189 transitions, 2221 flow [2024-01-27 15:27:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:27:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:27:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-01-27 15:27:52,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-01-27 15:27:52,375 INFO L175 Difference]: Start difference. First operand has 110 places, 149 transitions, 1698 flow. Second operand 4 states and 110 transitions. [2024-01-27 15:27:52,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 189 transitions, 2221 flow [2024-01-27 15:27:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 189 transitions, 2170 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-01-27 15:27:52,602 INFO L231 Difference]: Finished difference. Result has 109 places, 131 transitions, 1405 flow [2024-01-27 15:27:52,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1405, PETRI_PLACES=109, PETRI_TRANSITIONS=131} [2024-01-27 15:27:52,603 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2024-01-27 15:27:52,603 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 131 transitions, 1405 flow [2024-01-27 15:27:52,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:52,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:52,604 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:27:52,604 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:52,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1129955952, now seen corresponding path program 2 times [2024-01-27 15:27:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661503863] [2024-01-27 15:27:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661503863] [2024-01-27 15:27:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661503863] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:52,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:27:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640539913] [2024-01-27 15:27:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:27:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:27:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:27:52,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:52,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 131 transitions, 1405 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:52,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:52,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:52,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:54,717 INFO L124 PetriNetUnfolderBase]: 6726/10294 cut-off events. [2024-01-27 15:27:54,717 INFO L125 PetriNetUnfolderBase]: For 43473/43505 co-relation queries the response was YES. [2024-01-27 15:27:54,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35605 conditions, 10294 events. 6726/10294 cut-off events. For 43473/43505 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 64064 event pairs, 3813 based on Foata normal form. 17/9869 useless extension candidates. Maximal degree in co-relation 35527. Up to 7500 conditions per place. [2024-01-27 15:27:54,770 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 92 selfloop transitions, 0 changer transitions 67/163 dead transitions. [2024-01-27 15:27:54,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 163 transitions, 1880 flow [2024-01-27 15:27:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:27:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:27:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-01-27 15:27:54,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-27 15:27:54,772 INFO L175 Difference]: Start difference. First operand has 109 places, 131 transitions, 1405 flow. Second operand 4 states and 102 transitions. [2024-01-27 15:27:54,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 163 transitions, 1880 flow [2024-01-27 15:27:54,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 1815 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-01-27 15:27:54,910 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 809 flow [2024-01-27 15:27:54,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=809, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2024-01-27 15:27:54,911 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-01-27 15:27:54,911 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 809 flow [2024-01-27 15:27:54,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:54,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:54,912 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:54,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:27:54,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:54,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1547113510, now seen corresponding path program 3 times [2024-01-27 15:27:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943607304] [2024-01-27 15:27:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943607304] [2024-01-27 15:27:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943607304] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:55,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:55,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989639756] [2024-01-27 15:27:55,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:55,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:55,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:55,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 809 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:55,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:55,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:55,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:56,441 INFO L124 PetriNetUnfolderBase]: 5204/7897 cut-off events. [2024-01-27 15:27:56,441 INFO L125 PetriNetUnfolderBase]: For 23666/23690 co-relation queries the response was YES. [2024-01-27 15:27:56,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25180 conditions, 7897 events. 5204/7897 cut-off events. For 23666/23690 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 46290 event pairs, 1625 based on Foata normal form. 17/7482 useless extension candidates. Maximal degree in co-relation 25147. Up to 5518 conditions per place. [2024-01-27 15:27:56,489 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 120 selfloop transitions, 7 changer transitions 21/152 dead transitions. [2024-01-27 15:27:56,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 152 transitions, 1384 flow [2024-01-27 15:27:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-01-27 15:27:56,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2024-01-27 15:27:56,498 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 809 flow. Second operand 5 states and 123 transitions. [2024-01-27 15:27:56,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 152 transitions, 1384 flow [2024-01-27 15:27:56,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 152 transitions, 1215 flow, removed 63 selfloop flow, removed 10 redundant places. [2024-01-27 15:27:56,627 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 680 flow [2024-01-27 15:27:56,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=680, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-01-27 15:27:56,628 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-01-27 15:27:56,628 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 680 flow [2024-01-27 15:27:56,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:56,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:56,629 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:56,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:27:56,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:56,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1614303442, now seen corresponding path program 4 times [2024-01-27 15:27:56,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319448867] [2024-01-27 15:27:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319448867] [2024-01-27 15:27:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319448867] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:56,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:56,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:27:56,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326445262] [2024-01-27 15:27:56,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:56,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:27:56,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:27:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:27:56,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:56,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 680 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:56,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:56,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:56,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:57,943 INFO L124 PetriNetUnfolderBase]: 5326/8148 cut-off events. [2024-01-27 15:27:57,943 INFO L125 PetriNetUnfolderBase]: For 14567/14567 co-relation queries the response was YES. [2024-01-27 15:27:57,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23512 conditions, 8148 events. 5326/8148 cut-off events. For 14567/14567 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48439 event pairs, 1427 based on Foata normal form. 4/7716 useless extension candidates. Maximal degree in co-relation 23487. Up to 5778 conditions per place. [2024-01-27 15:27:57,985 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 94 selfloop transitions, 6 changer transitions 29/133 dead transitions. [2024-01-27 15:27:57,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 1113 flow [2024-01-27 15:27:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:27:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:27:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-01-27 15:27:57,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:27:57,987 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 680 flow. Second operand 4 states and 104 transitions. [2024-01-27 15:27:57,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 1113 flow [2024-01-27 15:27:58,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 1088 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-27 15:27:58,041 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 626 flow [2024-01-27 15:27:58,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=626, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2024-01-27 15:27:58,042 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-01-27 15:27:58,042 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 626 flow [2024-01-27 15:27:58,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:27:58,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:58,042 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:27:58,043 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:58,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash -624667182, now seen corresponding path program 5 times [2024-01-27 15:27:58,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195957088] [2024-01-27 15:27:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:58,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:58,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195957088] [2024-01-27 15:27:58,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195957088] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:58,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:58,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:27:58,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292843608] [2024-01-27 15:27:58,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:58,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:27:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:27:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:27:58,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:58,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 626 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:58,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:58,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:58,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:27:59,383 INFO L124 PetriNetUnfolderBase]: 4722/7210 cut-off events. [2024-01-27 15:27:59,383 INFO L125 PetriNetUnfolderBase]: For 11864/11864 co-relation queries the response was YES. [2024-01-27 15:27:59,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21073 conditions, 7210 events. 4722/7210 cut-off events. For 11864/11864 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 41387 event pairs, 1483 based on Foata normal form. 4/6792 useless extension candidates. Maximal degree in co-relation 21049. Up to 3048 conditions per place. [2024-01-27 15:27:59,417 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 92 selfloop transitions, 11 changer transitions 38/145 dead transitions. [2024-01-27 15:27:59,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1111 flow [2024-01-27 15:27:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:27:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:27:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-01-27 15:27:59,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-01-27 15:27:59,419 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 626 flow. Second operand 5 states and 134 transitions. [2024-01-27 15:27:59,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1111 flow [2024-01-27 15:27:59,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 145 transitions, 1059 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-27 15:27:59,442 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 546 flow [2024-01-27 15:27:59,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-01-27 15:27:59,443 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-01-27 15:27:59,443 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 546 flow [2024-01-27 15:27:59,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-01-27 15:27:59,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:27:59,443 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:27:59,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:27:59,443 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:27:59,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:27:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -249734048, now seen corresponding path program 1 times [2024-01-27 15:27:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:27:59,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919334479] [2024-01-27 15:27:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:27:59,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:27:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:27:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:27:59,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:27:59,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919334479] [2024-01-27 15:27:59,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919334479] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:27:59,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:27:59,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:27:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707578177] [2024-01-27 15:27:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:27:59,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:27:59,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:27:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:27:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:27:59,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:27:59,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2024-01-27 15:27:59,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:27:59,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:27:59,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:00,662 INFO L124 PetriNetUnfolderBase]: 4532/6811 cut-off events. [2024-01-27 15:28:00,662 INFO L125 PetriNetUnfolderBase]: For 11465/11465 co-relation queries the response was YES. [2024-01-27 15:28:00,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19666 conditions, 6811 events. 4532/6811 cut-off events. For 11465/11465 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 37215 event pairs, 2713 based on Foata normal form. 166/6601 useless extension candidates. Maximal degree in co-relation 19644. Up to 5354 conditions per place. [2024-01-27 15:28:00,698 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 93 selfloop transitions, 10 changer transitions 1/108 dead transitions. [2024-01-27 15:28:00,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 862 flow [2024-01-27 15:28:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-27 15:28:00,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:28:00,700 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 546 flow. Second operand 3 states and 78 transitions. [2024-01-27 15:28:00,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 862 flow [2024-01-27 15:28:00,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 804 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-27 15:28:00,710 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 559 flow [2024-01-27 15:28:00,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=559, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-01-27 15:28:00,711 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-01-27 15:28:00,711 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 559 flow [2024-01-27 15:28:00,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2024-01-27 15:28:00,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:00,711 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-27 15:28:00,712 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:28:00,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1242089248, now seen corresponding path program 1 times [2024-01-27 15:28:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250345396] [2024-01-27 15:28:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:28:00,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:00,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250345396] [2024-01-27 15:28:00,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250345396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:00,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:28:00,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:28:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953620477] [2024-01-27 15:28:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:00,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:28:00,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:28:00,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 559 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:00,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:00,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:28:00,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:02,285 INFO L124 PetriNetUnfolderBase]: 6308/9524 cut-off events. [2024-01-27 15:28:02,286 INFO L125 PetriNetUnfolderBase]: For 14475/14475 co-relation queries the response was YES. [2024-01-27 15:28:02,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26609 conditions, 9524 events. 6308/9524 cut-off events. For 14475/14475 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 57161 event pairs, 3345 based on Foata normal form. 368/9146 useless extension candidates. Maximal degree in co-relation 26590. Up to 6654 conditions per place. [2024-01-27 15:28:02,319 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 111 selfloop transitions, 8 changer transitions 1/124 dead transitions. [2024-01-27 15:28:02,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 1051 flow [2024-01-27 15:28:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-27 15:28:02,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:28:02,320 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 559 flow. Second operand 3 states and 78 transitions. [2024-01-27 15:28:02,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 1051 flow [2024-01-27 15:28:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 1030 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:02,335 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 577 flow [2024-01-27 15:28:02,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2024-01-27 15:28:02,336 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-01-27 15:28:02,336 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 577 flow [2024-01-27 15:28:02,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:02,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:02,337 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:02,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:28:02,337 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:28:02,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1059353255, now seen corresponding path program 1 times [2024-01-27 15:28:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019290831] [2024-01-27 15:28:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-27 15:28:02,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:02,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019290831] [2024-01-27 15:28:02,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019290831] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:28:02,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:28:02,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:28:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303490396] [2024-01-27 15:28:02,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:28:02,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:28:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:28:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:28:02,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:28:02,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:02,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:02,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:28:02,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:04,109 INFO L124 PetriNetUnfolderBase]: 7116/10864 cut-off events. [2024-01-27 15:28:04,109 INFO L125 PetriNetUnfolderBase]: For 19771/19771 co-relation queries the response was YES. [2024-01-27 15:28:04,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31594 conditions, 10864 events. 7116/10864 cut-off events. For 19771/19771 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 67806 event pairs, 4223 based on Foata normal form. 208/11056 useless extension candidates. Maximal degree in co-relation 31574. Up to 8730 conditions per place. [2024-01-27 15:28:04,172 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 100 selfloop transitions, 6 changer transitions 1/111 dead transitions. [2024-01-27 15:28:04,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 908 flow [2024-01-27 15:28:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:28:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:28:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-27 15:28:04,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-27 15:28:04,173 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 577 flow. Second operand 3 states and 78 transitions. [2024-01-27 15:28:04,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 908 flow [2024-01-27 15:28:04,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 897 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:04,196 INFO L231 Difference]: Finished difference. Result has 79 places, 89 transitions, 611 flow [2024-01-27 15:28:04,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=611, PETRI_PLACES=79, PETRI_TRANSITIONS=89} [2024-01-27 15:28:04,196 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2024-01-27 15:28:04,196 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 89 transitions, 611 flow [2024-01-27 15:28:04,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:04,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:04,197 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:04,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:28:04,197 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:28:04,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1456076955, now seen corresponding path program 1 times [2024-01-27 15:28:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694296959] [2024-01-27 15:28:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:28:08,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694296959] [2024-01-27 15:28:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694296959] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045372359] [2024-01-27 15:28:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:08,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:08,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:08,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:08,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:28:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:08,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 43 conjunts are in the unsatisfiable core [2024-01-27 15:28:08,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:10,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:28:10,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 261 treesize of output 385 [2024-01-27 15:28:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:28:11,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:28:13,456 INFO L349 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2024-01-27 15:28:13,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 296 treesize of output 259 [2024-01-27 15:28:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-01-27 15:28:13,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045372359] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:28:13,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:28:13,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-01-27 15:28:13,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236398231] [2024-01-27 15:28:13,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:28:13,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-27 15:28:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-27 15:28:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-01-27 15:28:13,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:28:13,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 89 transitions, 611 flow. Second operand has 22 states, 22 states have (on average 11.454545454545455) internal successors, (252), 22 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:13,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:13,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:28:13,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:26,582 INFO L124 PetriNetUnfolderBase]: 27220/41788 cut-off events. [2024-01-27 15:28:26,582 INFO L125 PetriNetUnfolderBase]: For 74623/74623 co-relation queries the response was YES. [2024-01-27 15:28:26,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119068 conditions, 41788 events. 27220/41788 cut-off events. For 74623/74623 co-relation queries the response was YES. Maximal size of possible extension queue 1827. Compared 321249 event pairs, 4999 based on Foata normal form. 13/41787 useless extension candidates. Maximal degree in co-relation 119047. Up to 5029 conditions per place. [2024-01-27 15:28:26,823 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 491 selfloop transitions, 156 changer transitions 135/786 dead transitions. [2024-01-27 15:28:26,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 786 transitions, 5465 flow [2024-01-27 15:28:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-01-27 15:28:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-01-27 15:28:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 891 transitions. [2024-01-27 15:28:26,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4062927496580027 [2024-01-27 15:28:26,827 INFO L175 Difference]: Start difference. First operand has 79 places, 89 transitions, 611 flow. Second operand 43 states and 891 transitions. [2024-01-27 15:28:26,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 786 transitions, 5465 flow [2024-01-27 15:28:26,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 786 transitions, 5411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:28:26,927 INFO L231 Difference]: Finished difference. Result has 143 places, 234 transitions, 2300 flow [2024-01-27 15:28:26,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2300, PETRI_PLACES=143, PETRI_TRANSITIONS=234} [2024-01-27 15:28:26,927 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 98 predicate places. [2024-01-27 15:28:26,928 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 234 transitions, 2300 flow [2024-01-27 15:28:26,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.454545454545455) internal successors, (252), 22 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:26,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:26,928 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:26,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:27,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-01-27 15:28:27,130 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:28:27,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1639011369, now seen corresponding path program 2 times [2024-01-27 15:28:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:27,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897377955] [2024-01-27 15:28:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:28:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-01-27 15:28:31,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:28:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897377955] [2024-01-27 15:28:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897377955] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:28:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758137253] [2024-01-27 15:28:31,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:28:31,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:28:31,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:28:31,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 15:28:31,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:28:31,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:28:31,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 48 conjunts are in the unsatisfiable core [2024-01-27 15:28:31,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:28:32,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:28:32,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 361 treesize of output 465 [2024-01-27 15:28:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:28:34,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:28:35,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:28:35,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 276 [2024-01-27 15:28:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:28:36,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758137253] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:28:36,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:28:36,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 27 [2024-01-27 15:28:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260874228] [2024-01-27 15:28:36,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:28:36,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-01-27 15:28:36,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:28:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-01-27 15:28:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2024-01-27 15:28:36,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-27 15:28:36,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 234 transitions, 2300 flow. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:36,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:28:36,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-27 15:28:36,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:28:51,818 INFO L124 PetriNetUnfolderBase]: 37316/57595 cut-off events. [2024-01-27 15:28:51,819 INFO L125 PetriNetUnfolderBase]: For 513472/513472 co-relation queries the response was YES. [2024-01-27 15:28:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226053 conditions, 57595 events. 37316/57595 cut-off events. For 513472/513472 co-relation queries the response was YES. Maximal size of possible extension queue 2646. Compared 470414 event pairs, 7615 based on Foata normal form. 4/57577 useless extension candidates. Maximal degree in co-relation 226009. Up to 14754 conditions per place. [2024-01-27 15:28:52,537 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 506 selfloop transitions, 220 changer transitions 52/782 dead transitions. [2024-01-27 15:28:52,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 782 transitions, 8092 flow [2024-01-27 15:28:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-01-27 15:28:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-01-27 15:28:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 724 transitions. [2024-01-27 15:28:52,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836777954425013 [2024-01-27 15:28:52,540 INFO L175 Difference]: Start difference. First operand has 143 places, 234 transitions, 2300 flow. Second operand 37 states and 724 transitions. [2024-01-27 15:28:52,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 782 transitions, 8092 flow [2024-01-27 15:28:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 782 transitions, 7567 flow, removed 232 selfloop flow, removed 9 redundant places. [2024-01-27 15:28:58,585 INFO L231 Difference]: Finished difference. Result has 188 places, 376 transitions, 4560 flow [2024-01-27 15:28:58,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4560, PETRI_PLACES=188, PETRI_TRANSITIONS=376} [2024-01-27 15:28:58,586 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 143 predicate places. [2024-01-27 15:28:58,586 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 376 transitions, 4560 flow [2024-01-27 15:28:58,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:28:58,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:28:58,586 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:28:58,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 15:28:58,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:28:58,797 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:28:58,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:28:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -498249639, now seen corresponding path program 3 times [2024-01-27 15:28:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:28:58,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954156643] [2024-01-27 15:28:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:28:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:28:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-27 15:29:03,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954156643] [2024-01-27 15:29:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954156643] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198307548] [2024-01-27 15:29:03,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:03,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:03,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:03,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:03,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-27 15:29:04,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-27 15:29:04,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:04,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 51 conjunts are in the unsatisfiable core [2024-01-27 15:29:04,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:05,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:29:05,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 278 treesize of output 474